| Title Information | |
|
Title |
Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables |
| Name:Personal | |
|
Name Part:given |
Milton |
|
Name Part:family |
Abramowitz |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Irene A. |
|
Name Part:family |
Stegun |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre(bibtex) | book |
| Origin Information | |
|
Publisher |
Dover Publications, Inc., New York |
|
Date Issued(encoding="marc") |
1964 |
|
Issuance |
monographic |
| Physical Description | |
|
Form(marcform) |
|
| Note | {Ninth Dover printing, tenth GPO printing} |
| Identifier | bookabr64 |
| Identifier:ISSN |<PHONE_NUMBER> |
| Location | |
|
URL |
http://www.math.sfu.ca/ cbm/aands/ |
| Title Information | |
|
Title |
Restricted diffusion of macromolecules through agar-gel membranes |
| Name:Personal | |
|
Name Part:given |
G. K. |
|
Name Part:family |
Ackers |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
R. L. |
|
Name Part:family |
Steere |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | A gel-diffusion technique in which transport occurs across a thin agar membrane has been devised. This technique was used for pore-size calibration of a series of agar gels of various concentrations by measurement of hindrance to diffusion of human hemoglobin and southern bean mosaic virus particles. Pore radii calculated from independent restricted diffusion measurements of these two particle-species by use of a theoretical equation of were in very good agreement, and show that this equation provides a close approximation to the diffusional restriction occurring in these systems. Values of restricted diffusion coefficients in gels of various pore sizes were obtained from restricted diffusion measurements of four other proteins (rabbit [gamma]-globulin, human serum albumin, bovine serum albumin, and pancreatic ribonuclease). When these coefficients were extrapolated to conditions of infinite pore size (zero gel concentration) the values obtained agreed generally with reported values of the free diffusion coefficients for these proteins. Sharp differentiation in diffusional restriction on the basis of particle size and shape was demonstrated. |
| Subject | |
|
Topic |
pore size |
|
Topic |
agarose |
|
Topic |
agar |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Biochim. Biophys. Acta |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
59 |
|
Part Detail:issue |
|
|
Part Number |
1 |
|
Extent(unit="pages") |
|
|
Start |
137 |
|
End |
149 |
|
Genre(marcgt) |
periodical |
| Identifier | ack62 |
| Identifier:DOI | 10.1016/0006-3002(62)90704-7 |
| Location | |
|
URL |
http://dx.doi.org/10.1016/0006-3002(62)90704-7 |
| Title Information | |
|
Title |
Protein-metal interactions in protein-colloid conjugates probed by surface-enhanced Raman spectroscopy |
| Name:Personal | |
|
Name Part:given |
Angela M. |
|
Name Part:family |
Ahern |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Robin L. |
|
Name Part:family |
Garrell |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Surface-enhanced Raman (SER) spectroscopy has been used to assess protein-metal interactions in colloidal immunoprobes. The absence of a detectable signal from conjugates of colloidal gold with antirabbit IgG, albumin-biotin, or protein A suggests that the proteins are not chemisorbed on the metal particles. Similarly, albumin, albumin-biotin, and protein A are not covalently bound to colloidal silver, but rather adsorb on silver initially with the protein hydration shell intact. Over a period of days, new SER bands appear in the albumin spectrum that are attributed to vibrations of aromatic amino acids. This implies that conformational changes are occurring in the protein near the interface. The time scale for these changes is consistent with what has been observed by circular dichroism and UV-visible spectroscopy. The effect of avidin on the binding of biotin to colloidal metal probes has also been characterized. The SERS results indicate that biotin binds to a cleft or pocketlike structure in avidin, restricting biotin-surface interactions. This study demonstrates the utility of SER spectroscopy for characterizing protein-metal interactions and the availability of adsorbed biomolecules for complexation. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Langmuir |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
7 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
254 |
|
End |
261 |
|
Genre(marcgt) |
periodical |
| Identifier | ahe91 |
| Title Information | |
|
Title |
Size fractionation of metal nanoparticles by membrane filtration |
| Name:Personal | |
|
Name Part:given |
A. |
|
Name Part:family |
Akthakul |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
A. I. |
|
Name Part:family |
Hochbaum |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
F. |
|
Name Part:family |
Stellacci |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
A. M. |
|
Name Part:family |
Mayes |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | A novel thin film composite nanofiltration (NF) membrane is fabricated by coating a conventional ultrafiltration membrane with a self-assembling amphiphilic graft copolymer. The NF membranes are used in the fractionation of gold nanciparticles to achieve a well-defined particle cutoff diameter and reduced size dispersity (see Figure). |
| Subject | |
|
Topic |
Membranes |
|
Topic |
Nanoparticles |
|
Topic |
metal |
|
Topic |
Self-assembly |
|
Topic |
quantum dots |
|
Topic |
semiconductor clusters |
|
Topic |
liquid-chromatography |
|
Topic |
gold nanoparticles |
|
Topic |
polymer membranes |
|
Topic |
nanocrystals |
|
Topic |
molecules |
|
Topic |
nanoclusters |
|
Topic |
mixture |
|
Topic |
brush |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Adv. Mater. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
17 |
|
Part Detail:issue |
|
|
Part Number |
5 |
|
Extent(unit="pages") |
|
|
Start |
532 |
|
End |
535 |
|
Genre(marcgt) |
periodical |
| Identifier | akt05 |
| Identifier:DOI | 10.1002/adma.200400636 |
| Location | |
|
URL |
http://dx.doi.org/10.1002/adma.200400636 |
| Title Information | |
|
Title |
Anomalously intense Raman spectra of pyridine at a silver electrode |
| Name:Personal | |
|
Name Part:given |
M. Grant |
|
Name Part:family |
Albrecht |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J. Alan |
|
Name Part:family |
Creighton |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Am. Chem. Soc. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
99 |
|
Part Detail:issue |
|
|
Part Number |
15 |
|
Extent(unit="pages") |
|
|
Start |
5215 |
|
End |
5217 |
|
Genre(marcgt) |
periodical |
| Identifier | alb77 |
| Identifier:DOI | 10.1021/ja00457a071 |
| Location | |
|
URL |
http://dx.doi.org/10.1021/ja00457a071 |
| Title Information | |
|
Title |
Organization of 'nanocrystal molecules' using DNA |
| Name:Personal | |
|
Name Part:given |
A. Paul |
|
Name Part:family |
Alivisatos |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Kai P. |
|
Name Part:family |
Johnsson |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Xiaogang |
|
Name Part:family |
Peng |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Troy E. |
|
Name Part:family |
Wilson |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Colin J. |
|
Name Part:family |
Loweth |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Marcel P. |
|
Name Part:family |
Bruchez |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Peter G. |
|
Name Part:family |
Schultz |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Patterning matter on the nanometre scale is an important objective of current materials chemistry and physics. It is driven by both the need to further miniaturize electronic components and the fact that at the nanometre scale, materials properties are strongly size-dependent and thus can be tuned sensitively1. In nanoscale crystals, quantum size effects and the large number of surface atoms influence the, chemical, electronic, magnetic and optical behaviour2?4. 'Top-down' (for example, lithographic) methods for nanoscale manipulation reach only to the upper end of the nanometre regime5; but whereas 'bottom-up' wet chemical techniques allow for the preparation of mono-disperse, defect-free crystallites just 1?10 nm in size6?10, ways to control the structure of nanocrystal assemblies are scarce. Here we describe a strategy for the synthesis of'nanocrystal molecules', in which discrete numbers of gold nanocrystals are organized into spatially defined structures based on Watson-Crick base-pairing interactions. We attach single-stranded DNA oligonucleotides of defined length and sequence to individual nanocrystals, and these assemble into dimers and trimers on addition of a complementary single-stranded DNA template. We anticipate that this approach should allow the construction of more complex two-and three-dimensional assemblies. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Nature |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
382 |
|
Part Detail:issue |
|
|
Part Number |
6592 |
|
Extent(unit="pages") |
|
|
Start |
609 |
|
End |
611 |
|
Genre(marcgt) |
periodical |
| Identifier | ali96 |
| Identifier:DOI | 10.1038/382609a0 |
| Location | |
|
URL |
http://dx.doi.org/10.1038/382609a0 |
| Title Information | |
|
Title |
Role of nanoparticle surface charge in surface-enhanced Raman scattering |
| Name:Personal | |
|
Name Part:given |
R. A. |
|
Name Part:family |
Alvarez-Puebla |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
E. |
|
Name Part:family |
Arceo |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
P. J. G. |
|
Name Part:family |
Goulet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J. J. |
|
Name Part:family |
Garrido |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
R. F. |
|
Name Part:family |
Aroca |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | In this work, the role of nanoparticle surface charge in surface-enhanced Raman scattering (SERS) is examined for the common case of measurements made in colloidal solutions of Ag and Au. Average SERS intensities obtained for several analytes (salicylic acid, pyridine, and 2-naphthalenethiol) on Ag and An colloids are correlated with the pH and zeta potential (xi) values of the nanoparticle solutions from which they were recorded. The consequence of the electrostatic interaction between the analyte and the metallic nanoparticle is stressed. The xi potentials of three commonly used colloidal solutions are reported as a function of pH, and a discussion is given on how these influence SERS intensity. Also examined is the importance of nanoparticle aggregation (and colloidal solution collapse) in determining SERS intensities, and how this varies with the pH of the solution. The results show that SERS enhancement is highest at xi potential values where the colloidal nanoparticle solutions are most stable and where the electrostatic repulsion between the particles and the analyte molecules is minimized. These results suggest some important criteria for consideration in all SERS measurements and also provide important insights into the problem of predicting SERS activities for different molecular systems. |
| Subject | |
|
Topic |
ultrasensitive chemical-analysis |
|
Topic |
gold sols |
|
Topic |
silver |
|
Topic |
sers |
|
Topic |
spectra |
|
Topic |
adsorption |
|
Topic |
salicylate |
|
Topic |
molecules |
|
Topic |
colloids |
|
Topic |
acids |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Phys. Chem. B |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
109 |
|
Part Detail:issue |
|
|
Part Number |
9 |
|
Extent(unit="pages") |
|
|
Start |
3787 |
|
End |
3792 |
|
Genre(marcgt) |
periodical |
| Identifier | alv05 |
| Identifier:DOI | 10.1021/jp045015o |
| Location | |
|
URL |
http://dx.doi.org/10.1021/jp045015o |
| Title Information | |
|
Title |
Radiative and nonradiative decay rates of a molecule close to a metal particle of complex shape |
| Name:Personal | |
|
Name Part:given |
Oliviero |
|
Name Part:family |
Andreussi |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Stefano |
|
Name Part:family |
Corni |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Benedetta |
|
Name Part:family |
Mennucci |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Jacopo |
|
Name Part:family |
Tomasi |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We present a model to evaluate the radiative and nonradiative lifetimes of electronic excited states of a molecule close to a metal particle of complex shape and, possibly, in the presence of a solvent. The molecule is treated quantum mechanically at Hartree?Fock (HF) or density-functional theory (DFT) level. The metal/solvent is considered as a continuous body, characterized by its frequency dependent local dielectric constant. For simple metal shapes (planar infinite surface and spherical particle) a version of the polarizable continuum model based on the integral equation formalism has been used, while an alternative methodology has been implemented to treat metal particles of arbitrary shape. In both cases, equations have been numerically solved using a boundary element method. Excitation energies and nonradiative decay rates due to the energy transfer from the molecule to the metal are evaluated exploiting the linear response theory (TDHF or TDDFT where TD?time dependent). The radiative decay rate of the whole system (molecule+metal/solvent) is calculated, still using a continuum model, in terms of the response of the surrounding to the molecular transition. The model presented has been applied to the study of the radiative and nonradiative lifetimes of a lissamine molecule in solution (water) and close to gold spherical nanoparticles of different radius. In addition, the influence of the metal shape has been analyzed by performing calculations on a system composed by a coumarin-type molecule close to silver aggregates of complex shape. |
| Subject | |
|
Topic |
nonradiative transitions |
|
Topic |
radiative lifetimes |
|
Topic |
excited states |
|
Topic |
solvent effects |
|
Topic |
quantum theory |
|
Topic |
HF calculations |
|
Topic |
density functional theory |
|
Topic |
continuum mechanics |
|
Topic |
integral equations |
|
Topic |
shapes (structures) |
|
Topic |
boundary-elements methods |
|
Topic |
gold |
|
Topic |
nanoparticles |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Chem. Phys. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
121 |
|
Part Detail:issue |
|
|
Part Number |
20 |
|
Extent(unit="pages") |
|
|
Start |
10190 |
|
End |
10202 |
|
Genre(marcgt) |
periodical |
| Identifier | and04 |
| Identifier:DOI | 10.1063/1.1806819 |
| Location | |
|
URL |
http://dx.doi.org/10.1063/1.1806819 |
| Title Information | |
|
Title |
Förster Energy Transfer in an Optical Microcavity |
| Name:Personal | |
|
Name Part:given |
Piers |
|
Name Part:family |
Andrew |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
William L. |
|
Name Part:family |
Barnes |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | By studying the transfer of excitation energy between dye molecules confined within an optical microcavity, we demonstrate experimentally that Förster energy transfer is influenced by the local photonic mode density. Locating donor and acceptor molecules at well-defined positions allows the transfer rate to be determined as a function of both mutual separation and cavity length. The results show that the Förster transfer rate depends linearly on the donor emission rate and hence photonic mode density, providing the potential to control energy transfer by modification of the optical environment. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Science |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
290 |
|
Part Detail:issue |
|
|
Part Number |
5492 |
|
Extent(unit="pages") |
|
|
Start |
785 |
|
End |
788 |
|
Genre(marcgt) |
periodical |
| Identifier | and00 |
| Identifier:DOI | 10.1126/science.290.5492.785 |
| Location | |
|
URL |
http://www.sciencemag.org/cgi/content/abstract/290/5492/785 |
|
URL |
http://dx.doi.org/10.1126/science.290.5492.785 |
| Title Information | |
|
Title |
Enhancement and Quenching of Single-Molecule Fluorescence |
| Name:Personal | |
|
Name Part:given |
Pascal |
|
Name Part:family |
Anger |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Palash |
|
Name Part:family |
Bharadwaj |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Lukas |
|
Name Part:family |
Novotny |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We present an experimental and theoretical study of the fluorescence rate of a single molecule as a function of its distance to a laser-irradiated gold nanoparticle. The local field enhancement leads to an increased excitation rate whereas nonradiative energy transfer to the particle leads to a decrease of the quantum yield (quenching). Because of these competing effects, previous experiments showed either fluorescence enhancement or fluorescence quenching. By varying the distance between molecule and particle we show the first experimental measurement demonstrating the continuous transition from fluorescence enhancement to fluorescence quenching. This transition cannot be explained by treating the particle as a polarizable sphere in the dipole approximation. |
| Subject | |
|
Topic |
fluorescence |
|
Topic |
radiation quenching |
|
Topic |
nonradiative transitions |
|
Topic |
laser beam effects |
|
Topic |
gold |
|
Topic |
nanoparticles |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Phys. Rev. Lett. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
96 |
|
Part Detail:issue |
|
|
Part Number |
11 |
|
Extent(unit="pages") |
|
|
Start |
113002 |
|
Genre(marcgt) |
periodical |
| Identifier | ang06 |
| Identifier:DOI | 10.1103/PhysRevLett.96.113002 |
| Location | |
|
URL |
http://link.aps.org/abstract/PRL/v96/e113002 |
|
URL |
http://dx.doi.org/10.1103/PhysRevLett.96.113002 |
| Title Information | |
|
Title |
Surface plasmon enhanced non-linear optical response of gold nanoparticles at the air/toluene interface |
| Name:Personal | |
|
Name Part:given |
Rodolphe |
|
Name Part:family |
Antoine |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Pierre F. |
|
Name Part:family |
Brevet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Hubert H. |
|
Name Part:family |
Girault |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Donald |
|
Name Part:family |
Bethell |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
David J. |
|
Name Part:family |
Schiffrin |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Colloidal gold nanoparticles in toluene solution, synthesised using a two-phase liquid/liquid system, display second harmonic generation, wavelength analysis of which indicates the narrow frequency band of the gold surface plasmon for nanoparticles present at the air/toluene interface. |
| Subject | |
|
Topic |
3 dimensions |
|
Topic |
monolayers |
|
Topic |
particles |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Chem. Comm. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
19 |
|
Extent(unit="pages") |
|
|
Start |
1901 |
|
End |
1902 |
|
Genre(marcgt) |
periodical |
| Identifier | ant97 |
| Title Information | |
|
Title |
A General Non-Local Theory for the Electromagnetic Response of a Small Metal Particle |
| Name:Personal | |
|
Name Part:given |
P. |
|
Name Part:family |
Apell |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
{\AA}. |
|
Name Part:family |
Ljungbert |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We derive, in the quasistatic limit, general formulas for the electromagnetic response of a small metal sphere. The jellium model is assumed but we show how corrections, to the classical situation due to tue non-local response with a smoothly varying surface profile can be included in a simple manner. These corrections enter as two lengths, which are measures of the non-locality range. As an example we study the interaction between a dipole and the metal sphere, in the context of image field enhancement and damping because of electron -hole pair excitations in the particle. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Physica Scripta |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
26 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
113 |
|
End |
118 |
|
Genre(marcgt) |
periodical |
| Identifier | ape82 |
| Title Information | |
|
Title |
Red shift of surface plasmons in small metal particles |
| Name:Personal | |
|
Name Part:given |
P. |
|
Name Part:family |
Apell |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
{\AA}. |
|
Name Part:family |
Ljungbert |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | It is shown that the experimentally found red shift of the surface plasmon resonance in a small metal particle is a direct measure of the first moment of the induced surface charge. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Sol. State Comm. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
44 |
|
Part Detail:issue |
|
|
Part Number |
9 |
|
Extent(unit="pages") |
|
|
Start |
1367 |
|
End |
1369 |
|
Genre(marcgt) |
periodical |
| Identifier | ape82b |
| Identifier:DOI | 10.1016/0038-1098(82)90895-X |
| Location | |
|
URL |
http://dx.doi.org/10.1016/0038-1098(82)90895-X |
| Title Information | |
|
Title |
Non-Local Optical Effects at Metal Surfaces |
| Name:Personal | |
|
Name Part:given |
P. |
|
Name Part:family |
Apell |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
{\AA}. |
|
Name Part:family |
Ljungbert |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
S. |
|
Name Part:family |
Lundqvist |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | The non-local response of an irradiated metal surface is discussed in terms of the induced density in response to an external field. The field and the induced charge near the surface can be determined by solving Maxwell's equations in the surface region and match the solution to the incoming and reflected wave in vacuum and to the asymptotic solution in the bulk of the solid. For incoming fields of wave lengths long in comparison with the extension of the surface region a key quantity is the center of gravity of the screening charge. This complex function of the frequency is important for a number of properties such as the reflectivity, the surface plasmon dispersion, image fields, van der Waals interactions between a molecule and a metal surface, etc. Considerations similar to the ones for a planar surface are also applied to the surface properties of a small metallic sphere. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Physica Scripta |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
30 |
|
Part Detail:issue |
|
|
Part Number |
5 |
|
Extent(unit="pages") |
|
|
Start |
367 |
|
End |
383 |
|
Genre(marcgt) |
periodical |
| Identifier | ape84 |
| Title Information | |
|
Title |
Optical Properties of Small Metal Spheres: Surface Effects |
| Name:Personal | |
|
Name Part:given |
P. |
|
Name Part:family |
Apell |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
David R. |
|
Name Part:family |
Penn |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | It has been assumed that the optical properties of small spheres can be understood by means of a Drude dielectric function that incorporates a boundary scattering rate 1 / tau s =vF / R, where vF is the Fermi velocity and R is the sphere radius. An effective scattering rate 1 / tau s=fvF / R is calculated and f is evaluated as a function of photon frequency. The largest contribution to f is due to the electron density profile of the sphere rather than the boundary scattering that is reduced an order of magnitude by electron screening. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Phys. Rev. Lett. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
50 |
|
Part Detail:issue |
|
|
Part Number |
17 |
|
Extent(unit="pages") |
|
|
Start |
1316 |
|
End |
1319 |
|
Genre(marcgt) |
periodical |
| Identifier | ape83 |
| Identifier:DOI | 10.1103/PhysRevLett.50.1316 |
| Location | |
|
URL |
http://link.aps.org/abstract/PRL/v50/p1316 |
|
URL |
http://dx.doi.org/10.1103/PhysRevLett.50.1316 |
| Title Information | |
|
Title |
Small Metal Particles - Nonlocal Optical-Properties And Quantum-Size Effects |
| Name:Personal | |
|
Name Part:given |
S. P. |
|
Name Part:family |
Apell |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J. |
|
Name Part:family |
Giraldo |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
S. |
|
Name Part:family |
Lundqvist |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | In this work we survey some recent results concerning non-local otical effects and particle-size dependence for the optical properties of individual metallic particles. {W}e start by giving a historical overview and a conceptual discussion on the subject of small particles, underlining their potential applications. {S}implified optical response functions for a metallic sphere are introduced and duly illustrated to bring out the physical content. {P}articular emphasis is given to optical absorption, resonance effects and far-infrared properties exhibited by simple and noble metal particles having less than 100 {\AA} radii. {A} comparison between the traditional ({M}ie) approach and the proposed non-local scheme is made and it leads to an increased understanding of the various mechanisms a small particle exhibits when screening an external electromagnetic field. |
| Subject | |
|
Topic |
far-infrared absorption |
|
Topic |
jellium-background model |
|
Topic |
ultrafine al particles |
|
Topic |
small silver particles |
|
Topic |
surface-plasmons |
|
Topic |
electronic polarizability |
|
Topic |
vanderwaals interaction |
|
Topic |
resonance-absorption |
|
Topic |
small spheres |
|
Topic |
red-shift |
|
Topic |
particles |
|
Topic |
size |
|
Topic |
surface |
|
Topic |
nonlocal |
|
Topic |
far-infrared |
|
Topic |
resonances |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Phase Transitions |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
24-26 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
577 |
|
End |
604 |
|
Genre(marcgt) |
periodical |
| Identifier | ape90 |
| Title Information | |
|
Title |
Detection of biomolecular interaction between biotin and streptavidin on a self-assembled monolayer using magnetic nanoparticles |
| Name:Personal | |
|
Name Part:given |
Atsushi |
|
Name Part:family |
Arakaki |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Sho |
|
Name Part:family |
Hideshima |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Takahito |
|
Name Part:family |
Nakagawa |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Daisuke |
|
Name Part:family |
Niwa |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Tsuyoshi |
|
Name Part:family |
Tanaka |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Tadashi |
|
Name Part:family |
Matsunaga |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Tetsuya |
|
Name Part:family |
Osaka |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | For developing a magnetic bioassay system, an investigation to determine the presence of a specific biomolecular interaction between biotin and streptavidin was done using magnetic nanoparticles and a silicon substrate with a self-assembled monolayer. Streptavidin was immobilized on the magnetic particles, and biotin was attached to the monolayer-modified substrate. The reaction of streptavidin-modified magnetic particles on the biotin-modified substrate was clearly observed under an optical microscope. The magnetic signals from the particles were detected using a magnetic force microscope. The results of this study demonstrate that the combination of a monolayer-modified substrate with biomolecule-modified magnetic particles is useful for detecting biomolecular interactions in medical and diagnostic analyses. © 2004 Wiley Periodicals, Inc. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Biotech. Bioeng. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
88 |
|
Part Detail:issue |
|
|
Part Number |
4 |
|
Extent(unit="pages") |
|
|
Start |
543 |
|
End |
546 |
|
Identifier:ISSN |
1097-0290 |
|
Genre(marcgt) |
periodical |
| Identifier | ara04 |
| Identifier:DOI | 10.1002/bit.20262 |
| Location | |
|
URL |
http://dx.doi.org/10.1002/bit.20262 |
| Title Information | |
|
Title |
Molecular cloning and nucleotide sequence of the streptavidin gene |
| Name:Personal | |
|
Name Part:given |
Carlos E. |
|
Name Part:family |
Argaraña |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Irwin D. |
|
Name Part:family |
Kuntz |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Steven |
|
Name Part:family |
Birken |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Richard |
|
Name Part:family |
Axel |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Charles R. |
|
Name Part:family |
Cantor |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Using synthetic oligonucleotides as probes we have cloned the streptavidin gene from a genomic library of Streptomyces avidinii. Nucleotide sequence analysis indicated that a 2 Kb DNA-fragment contained the entire coding region, a signal peptide region and the 3' and 5' flanking regions of the gene. The deduced amino acid sequence shows several interrupted blocks of homology with the amino acid sequence of chicken egg-white avidin. Analysis of the secondary structure suggests a high content of beta-structure in both proteins and considerable overall structural similarity between them. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Nucl. Acids Res. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
14 |
|
Part Detail:issue |
|
|
Part Number |
4 |
|
Extent(unit="pages") |
|
|
Start |
1871 |
|
End |
1882 |
|
Genre(marcgt) |
periodical |
| Identifier | arg86 |
| Identifier:DOI | 10.1093/nar/14.4.1871 |
| Location | |
|
URL |
http://nar.oxfordjournals.org/cgi/content/abstract/14/4/1871 |
|
URL |
http://dx.doi.org/10.1093/nar/14.4.1871 |
| Title Information | |
|
Title |
Nanogold plasmon resonance-based glucose sensing. 2. Wavelength-ratiometric resonance light scattering |
| Name:Personal | |
|
Name Part:given |
K. |
|
Name Part:family |
Aslan |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J. R. |
|
Name Part:family |
Lakowicz |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
C. D. |
|
Name Part:family |
Geddes |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Gold colloids are well known to display strong plasmon absorption bands due to electron oscillations induced by the incident light. When the colloids are in proximity, the plasmon absorption bands are often perturbed. This has enabled us recently to successfully develop a glucose sensing platform based on the disassociation of dextrancoated gold colloids, cross-linked with Con A, by glucose. However, a much more useful and simpler property of gold colloids, which has been ill explored with regard to sensing, is their ability to efficiently scatter excitation fight. We have found that our nanogold sensing aggregates are indeed efficient light scatters around the nanogold plasmon absorption band. By measuring the ratio of scattered fight intensities at two different arbitrary wavelengths, 560 and 680 nm, glucose concentrations can be readily determined from a few millimolar up to similar to 60 mM, using a simple white light LED and detection system. Further, by measuring the ratio of the scattered intensities, this sensing approach is independent of the total sensing aggregate concentration and the excitation and detection instrumentation fluctuations or drifts. This simplistic and low-cost approach to glucose sensing, coupled with the sensing aggreagates' ability to scatter red light, suggests the potential use of these aggregates for use in physiological transdermal glucose monitoring, either for implantable skin sensors or glucose sensing tattoos (discussed later). |
| Subject | |
|
Topic |
highly fluorescent analogs |
|
Topic |
nucleic-acids |
|
Topic |
contact-lens |
|
Topic |
submicroscopic particles |
|
Topic |
biological applications |
|
Topic |
metal nanoparticles |
|
Topic |
gold nanoparticles |
|
Topic |
optical-properties |
|
Topic |
nanogram levels |
|
Topic |
tracer labels |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Anal. Chem. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
77 |
|
Part Detail:issue |
|
|
Part Number |
7 |
|
Extent(unit="pages") |
|
|
Start |
2007 |
|
End |
2014 |
|
Genre(marcgt) |
periodical |
| Identifier | asl05 |
| Identifier:DOI | 10.1021/ac0484880 |
| Location | |
|
URL |
http://dx.doi.org/10.1021/ac0484880 |
| Title Information | |
|
Title |
Controlled and Reversible Aggregation of Biotinylated Gold Nanoparticles with Streptavidin |
| Name:Personal | |
|
Name Part:given |
Kadir |
|
Name Part:family |
Aslan |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Claudia C. |
|
Name Part:family |
Luhrs |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Víctor H. |
|
Name Part:family |
Pérez-Luna |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Biotinylated gold nanoparticles were prepared by using a two-step surface modification procedure. First, a carboxyl-terminated alkanethiol was chemisorbed onto the surface of gold nanoparticles in the presence of a stabilizing agent. Subsequently, the carboxyl groups were reacted with (+)-biotinyl-3,6,9,-trioxaundecanediamine and 2-(2-aminoethoxy)ethanol. This procedure resulted in stable, ligand-modified gold nanoparticles. Upon interaction with streptavidin, the biotinylated gold nanoparticles aggregated by means of specific biomolecular recognition. Their aggregation was studied by optical absorption spectroscopy. Controlled aggregation of biotinylated gold nanoparticles resulted in a shift in the surface plasmon resonance peak and broadening of the absorption spectrum of the nanoparticles. The spectral changes were used to assess the extent of aggregation. Aggregation was found to be dependent on the concentrations of streptavidin, biotinylated gold nanoparticles, and the surface mole fraction of biotin groups on the nanoparticles. Maximum aggregation was observed when 24 nM streptavidin and 0.80 nM biotinylated gold nanoparticles were used. Reversal of nanoparticle aggregation was accomplished by the addition of soluble biotin to the streptavidin-nanoparticle aggregates. Kinetic analysis of the absorbance data showed that streptavidin-induced aggregation of biotinylated gold nanoparticles could be interpreted in terms of a Reaction-Limited Colloidal Aggregation (RLCA) model. This indicates that optical absorption spectroscopy can provide a quantitative measurement of the aggregation process. |
| Subject | |
|
Topic |
random sequential adsorption |
|
Topic |
optical-absorption |
|
Topic |
colloidal gold |
|
Topic |
colorimetric detection |
|
Topic |
metal particles |
|
Topic |
surfaces |
|
Topic |
polynucleotides |
|
Topic |
alkanethiols |
|
Topic |
spectroscopy |
|
Topic |
nanocrystals |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Phys. Chem. B |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
108 |
|
Part Detail:issue |
|
|
Part Number |
40 |
|
Extent(unit="pages") |
|
|
Start |
15631 |
|
End |
15639 |
|
Genre(marcgt) |
periodical |
| Identifier | asl04a |
| Identifier:DOI | 10.1021/jp036089n |
| Location | |
|
URL |
http://dx.doi.org/10.1021/jp036089n |
| Title Information | |
|
Title |
Quenched Emission of Fluorescence by Ligand Functionalized Gold Nanoparticles |
| Name:Personal | |
|
Name Part:given |
Kadir |
|
Name Part:family |
Aslan |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Víctor H. |
|
Name Part:family |
Pérez-Luna |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | A fluorescence-based detection scheme that uses ligand functionalized gold nanoparticles is proposed. The transduction scheme is based on the strong quenching of the fluorescence emission exerted by metallic surfaces on fluorophores positioned in their immediate vicinity (<5 nm). Binding of fluorophore-labeled anti-biotin to biotinylated gold nanoparticles resulted in decreasedfluorescence emission intensity. Subsequent competitive dissociation of labeled anti-biotin with D-biotin resulted in increased fluorescence emission intensity. These interactions occurred by means of specific molecular recognition because when the binding sites of anti-biotin were saturated with D-biotin prior to interaction with the gold nanoparticles; changes in the fluorescence emission intensity were not observed. |
| Subject | |
|
Topic |
Gold nanoparticles |
|
Topic |
self-assembled monolayers |
|
Topic |
surface modification |
|
Topic |
fluorescence |
|
Topic |
energy transfer |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Journal of Fluorescence |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
14 |
|
Part Detail:issue |
|
|
Part Number |
4 |
|
Extent(unit="pages") |
|
|
Start |
401 |
|
End |
405 |
|
Genre(marcgt) |
periodical |
| Identifier | asl04 |
| Identifier:DOI | 10.1023/B:JOFL.0000031821.74706.ea |
| Location | |
|
URL |
http://dx.doi.org/10.1023/B:JOFL.0000031821.74706.ea |
| Title Information | |
|
Title |
Novel aspects of Fluorescence Lifetime for Molecules Positioned Close to Metal Surfaces |
| Name:Personal | |
|
Name Part:given |
F. R. |
|
Name Part:family |
Aussenegg |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
A. |
|
Name Part:family |
Leitner |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
M. E. |
|
Name Part:family |
Lippitsch |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
H. |
|
Name Part:family |
Reinisch |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
M. |
|
Name Part:family |
Riegler |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Surf. Sci. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
189 |
|
Extent(unit="pages") |
|
|
Start |
935 |
|
End |
945 |
|
Genre(marcgt) |
periodical |
| Identifier | aus87 |
| Title Information | |
|
Title |
Field enhancement and apertureless near-field optical spectroscopy of single molecules |
| Name:Personal | |
|
Name Part:given |
J. |
|
Name Part:family |
Azoulay |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
A. |
|
Name Part:family |
Débarre |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
A. |
|
Name Part:family |
Richard |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
P. |
|
Name Part:family |
Tchénio |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We report on fluorescence enhancement in near field optical spectroscopy by apertureless microscopy. Our apertureless microscope is designed around a confocal fluorescence microscope associated with an AFM head. First, we show that the confocal microscope alone allows single molecule imaging and single molecule fluorescence analysis. When associated with the AFM head, we demonstrate, for the first time to our knowledge, that single molecule fluorescence is enhanced under the silicon tip. We tentatively attribute this effect to field enhancement under the tip. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Microsc. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
194 |
|
Part Detail:issue |
|
|
Part Number |
2-3 |
|
Extent(unit="pages") |
|
|
Start |
486 |
|
End |
490 |
|
Genre(marcgt) |
periodical |
| Identifier | azo99 |
| Identifier:DOI | 10.1046/j.1365-2818.1999.00558.x |
| Location | |
|
URL |
http://dx.doi.org/10.1046/j.1365-2818.1999.00558.x |
| Title Information | |
|
Title |
Photoinduced electron transfer between chlorophyll a and gold nanoparticles |
| Name:Personal | |
|
Name Part:given |
Saïd |
|
Name Part:family |
Barazzouk |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Prashant V. |
|
Name Part:family |
Kamat |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Surat |
|
Name Part:family |
Hotchandani |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Excited-state interactions between chlorophyll a (Chla) and gold nanoparticles have been studied. The emission intensity of Chla is quenched by gold nanoparticles. The dominant process for this quenching has been attributed to the process of photoinduced electron transfer from excited Chla to gold nanoparticles, although because of a small overlap between fluorescence of Chla and absorption of gold nanoparticles, the energy-transfer process cannot be ruled out. Photoinduced electron-transfer mechanism is supported by the electrochemical modulation of fluorescence of Chla. In absence of an applied bias, Chla cast on gold film, as a result of electron transfer, exhibits a very weak fluorescence. However, upon negatively charging the gold nanocore by external bias, an increase in fluorescence intensity is observed. The negatively charged gold nanoparticles create a barrier and suppress the electron-transfer process from excited Chla to gold nanoparticles, resulting in an increase in radiative process. Nanosecond laser flash experiments of Chla in the presence of gold nanoparticles and fullerene (C-60) have demonstrated that Au nanoparticles, besides accepting electrons, can also mediate or shuttle electrons to another acceptor. Taking advantage of these properties of gold nanoparticles, a photoelectrochemical cell based on Chla and gold nanoparticles is constructed. A superior performance of this cell compared to that without the gold film is due to the beneficial role of gold nanoparticles in accepting and shuttling the photogenerated electrons in Chla to the collecting electrode, leading to an enhancement in charge separation efficiency. |
| Subject | |
|
Topic |
fermi-level equilibration |
|
Topic |
lipid bilayer vesicles |
|
Topic |
triplet-state |
|
Topic |
excited-states |
|
Topic |
model systems |
|
Topic |
visible absorption |
|
Topic |
flash-photolysis |
|
Topic |
energy-transfer |
|
Topic |
fluorescence-spectra |
|
Topic |
metal nanoparticles |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Phys. Chem. B |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
109 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
716 |
|
End |
723 |
|
Genre(marcgt) |
periodical |
| Identifier | bar05 |
| Identifier:DOI | 10.1021/jp046474s |
| Location | |
|
URL |
http://dx.doi.org/10.1021/jp046474s |
| Title Information | |
|
Title |
Internal and near-surface electromagnetic fields for a spherical particle irradiated by a focused laser beam |
| Name:Personal | |
|
Name Part:given |
J. P. |
|
Name Part:family |
Barton |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
D. R. |
|
Name Part:family |
Alexander |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
S. A. |
|
Name Part:family |
Schaub |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Theoretical expressions for the internal and external electromagnetic fields for an arbitrary electromagnetic beam incident upon a homogeneous spherical particle are derived, and numerical calculations based upon this theoretical development are presented. In particular, spatial distributions of the internal and near-surface electric field magnitude (source function) for a focused fundamental (TEM00 mode) Gaussian beam of 1.06 µm wavelength and 4 µm beam waist diameter incident upon a 5-µm-diam water droplet in air are presented as a function of the location of the beam focal point relative to the sphere center. The calculations indicate that the internal and near-surface electric field magnitude distribution can be strongly dependent upon relative focal point positioning and may differ significantly from the corresponding electric field magnitude distribution expected from plane-wave irradiation. |
| Subject | |
|
Topic |
laser radiation |
|
Topic |
electric fields |
|
Topic |
particulates |
|
Topic |
spheres |
|
Topic |
electromagnetic fields |
|
Topic |
analytical solution |
|
Topic |
photon collisions |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Appl. Phys. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
64 |
|
Part Detail:issue |
|
|
Part Number |
4 |
|
Extent(unit="pages") |
|
|
Start |
1632 |
|
End |
1639 |
|
Genre(marcgt) |
periodical |
| Identifier | bar88 |
| Identifier:DOI | 10.1063/1.341811 |
| Location | |
|
URL |
http://link.aip.org/link/?JAP/64/1632/1 |
|
URL |
http://dx.doi.org/10.1063/1.341811 |
| Title Information | |
|
Title |
Tracking the Dynamics of Single Quantum Dots: Beating the Optical Resolution Twice |
| Name:Personal | |
|
Name Part:given |
A. R. |
|
Name Part:family |
Bausch |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
D. A. |
|
Name Part:family |
Weitz |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Using particle tracking routines the location of single point light sources can be determined with an accuracy of a few nanometers. By using quantum dots (QDs) emitting at different wavelengths, the measurement of the distance between these point light sources, which are closer than the optical resolution of 200 nm, was achieved. The nanocrystals have major advantages over conventional chromophores in higher quantum yield, more photostability, and the possibility of different emission wavelengths by an excitation with a single wavelength. The colocalization of two single QDs at the least distance of 40 nm can be measured with a standard deviation of 5 nm and a time resolution of 117 ms using one excitation wavelength. |
| Subject | |
|
Topic |
dynamic nanocrystals imaging |
|
Topic |
multicolor particle tracking |
|
Topic |
beam splitter |
|
Topic |
flow visualization |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Nanoparticle Res. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
4 |
|
Part Detail:issue |
|
|
Part Number |
6 |
|
Extent(unit="pages") |
|
|
Start |
477 |
|
End |
481 |
|
Genre(marcgt) |
periodical |
| Identifier | bau02 |
| Identifier:DOI | 10.1023/A:1022886503060 |
| Location | |
|
URL |
http://dx.doi.org/10.1023/A:1022886503060 |
| Title Information | |
|
Title |
An improved method for the single-step purification of streptavidin |
| Name:Personal | |
|
Name Part:given |
Edward A. |
|
Name Part:family |
Bayer |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Haya |
|
Name Part:family |
Ben-Hur |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Gerry |
|
Name Part:family |
Gitlin |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Meir |
|
Name Part:family |
Wilchek |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | A new method for the preparation of a more efficient, stable iminobiotin-containing resin for the isolation of streptavidin was developed. CL-Sepharose was activated with p-nitrophenyl chloroformate, and the resultant carbonate derivative was reacted with diaminohexane. Subsequent reaction of the amino-containing resin with iminobiotin-N-hydroxysuccinimide ester (in an organic solvent) yielded the stable affinity resin. The capacity of this resin for either avidin of streptavidin was 12 mg per ml resin, and streptavidin could be purified in one step directly from the culture broth of Streptomyces avidinii. The biotin-binding protein isolated in this manner exhibited a major band at about 75 kDa and a minor band at about 150 kDa. Under denaturing conditions, a spectrum of subunit molecular weights ranging between 15 and 19 kDa was detected, the distributiob of which depended upon the specific preparation. |
| Subject | |
|
Topic |
avidin-biotin technology |
|
Topic |
iminobiotin |
|
Topic |
streptavidin |
|
Topic |
Streptomyces avidinii |
|
Topic |
stable carbamate resins |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Biochem. Biophys. Meth. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
13 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
103 |
|
End |
112 |
|
Genre(marcgt) |
periodical |
| Identifier | bay86 |
| Identifier:DOI | 10.1016/0165-022X(86)90022-9 |
| Location | |
|
URL |
http://www.sciencedirect.com/science/article/B6T28-47NWBNX-2H/2/92a00173b5a574145a07d175e6b8dbd8 |
|
URL |
http://dx.doi.org/10.1016/0165-022X(86)90022-9 |
| Title Information | |
|
Title |
Postsecretory modifications of streptavidin. |
| Name:Personal | |
|
Name Part:given |
Edward A. |
|
Name Part:family |
Bayer |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Haya |
|
Name Part:family |
Ben-Hur |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Yaffa |
|
Name Part:family |
Hiller |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Meir |
|
Name Part:family |
Wilchek |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Streptavidin, an extracellular biotin-binding protein from Streptomyces avidinii, exhibits a multiplicity in its electrophoretic mobility pattern which depends both upon the conditions for growth of the bacterium and upon the protocol used in the purification of the protein. The observed structural heterogeneity appears to reflect the action of two types of postsecretory molecular events: proteolytic digestion of the intact Mr-18,000 subunit to a minimal molecular size (approx. Mr 14,000), and aggregation of the native tetramer into higher-order oligomeric forms. The extent of subunit degradation and/or tetrameric aggregation affects the capacity of a given streptavidin preparation to interact with biotin-conjugated proteins in different assay systems. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Biochem. J. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
259 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
369 |
|
End |
376 |
|
Genre(marcgt) |
periodical |
| Identifier | bay89 |
| Location | |
|
URL |
http://www.biochemj.org/bj/259/bj2590369.htm |
| Title Information | |
|
Title |
Fluorescence Enhancement in Hot Spots of AFM-Designed Gold Nanoparticle Sandwiches |
| Name:Personal | |
|
Name Part:given |
Alpan |
|
Name Part:family |
Bek |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Photonics and Optoelectronics Group, Physics Department and CENS, Ludwig-Maximilians-Universität München, Amalienstrasse 54, 80799 Munich, Germany |
| Name:Personal | |
|
Name Part:given |
Reiner |
|
Name Part:family |
Jansen |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Photonics and Optoelectronics Group, Physics Department and CENS, Ludwig-Maximilians-Universität München, Amalienstrasse 54, 80799 Munich, Germany |
| Name:Personal | |
|
Name Part:given |
Moritz |
|
Name Part:family |
Ringler |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Photonics and Optoelectronics Group, Physics Department and CENS, Ludwig-Maximilians-Universität München, Amalienstrasse 54, 80799 Munich, Germany |
| Name:Personal | |
|
Name Part:given |
Sergiy |
|
Name Part:family |
Mayilo |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Photonics and Optoelectronics Group, Physics Department and CENS, Ludwig-Maximilians-Universität München, Amalienstrasse 54, 80799 Munich, Germany |
| Name:Personal | |
|
Name Part:given |
Thomas A. |
|
Name Part:family |
Klar |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Photonics and Optoelectronics Group, Physics Department and CENS, Ludwig-Maximilians-Universität München, Amalienstrasse 54, 80799 Munich, Germany |
| Name:Personal | |
|
Name Part:given |
Jochen |
|
Name Part:family |
Feldmann |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Photonics and Optoelectronics Group, Physics Department and CENS, Ludwig-Maximilians-Universität München, Amalienstrasse 54, 80799 Munich, Germany |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We observe an enhancement of fluorescence from a single fluorescent sphere, which is sandwiched between two individual gold nanoparticles, forming a hot spot of strong field enhancement. The fluorescence enhancing hot spot is custom-designed by the deliberate assembly of gold nanoparticles with an atomic force microscope cantilever. The fluorescence intensity is monitored while the separation between the two gold nanoparticles is reduced by gradually pushing the gold nanoparticles closer to the fluorescent sphere. The fluorescence enhancement is maximal when the distance between the two gold nanoparticles is smallest, when the excitation polarization is parallel to the axis of the sandwich, and when the fluorescent sphere is positioned exactly on the axis connecting the two gold nanoparticles. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Nano Lett. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
8 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
485 |
|
End |
490 |
|
Identifier:ISSN |
1530-6984 |
|
Genre(marcgt) |
periodical |
| Identifier | bek07 |
| Identifier:DOI | 10.1021/nl072602n |
| Location | |
|
URL |
http://dx.doi.org/10.1021/nl072602n |
| Title Information | |
|
Title |
Nanoparticle energy transfer on the cell surface |
| Name:Personal | |
|
Name Part:given |
L. |
|
Name Part:family |
Bene |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
G. |
|
Name Part:family |
Szentesi |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
L. |
|
Name Part:family |
Matyus |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
R. |
|
Name Part:family |
Gaspar |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
S. |
|
Name Part:family |
Damjanovich |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Membrane topology of receptors plays an important role in shaping transmembrane signalling of cells. Among the methods used for characterizing receptor clusters, fluorescence resonance energy transfer between a donor and acceptor fluorophore plays a unique role based on its capability of detecting molecular level (2-10 nm) proximities of receptors in physiological conditions. Recent development of biotechnology has made possible the usage of colloidal gold particles in a large size range for specific labelling of cells for the purposes of electron microscopy. However, by combining metal and fluorophore labelling or cells, the versatility of metal-fluorophore interactions opens the way for new applications by detecting the presence of the metal particles by the methods of fluorescence spectroscopy. An outstanding feature of the metal nanoparticle-fluorophore interaction is that the metal particle can enhance spontaneous emission of the fluorophore in a distance-dependent fashion, in an interaction range esentially determined by the size of the nanoparticle. In our work enhanced fluorescence of rhodamine and cyanine dyes was observed in the vicinity of immunogold nanoparticles on the surface of JY cells in a flow cytometer. The dyes and the immunogold were targetted to the cell surface receptors MHCI, MHCII, transferrin receptor and CD45 by monoclonal antibodies. The fluorescence enhancement was sensitive to the wavelength of the exciting light, the size and amount of surface bound gold beads, as well as the fluorophore-nanoparticle distance. The intensity of 90&DEG; scattering of the incident light beam was enhanced by the immunogold in a concentration and size-dependent fashion. The 90&DEG; light scattering varied with the wavelength of the incident light in a manner characteristic to gold nanoparticles of the applied sizes. A reduction in photobleaching time constant of the cyanine dye was observed in the vicinity of gold particles in a digital imaging microscope. Modulations of 90&DEG; light scattering intensity and photobleaching time constant indicate the role of the local field in the fluorescence enhancement. A mathematical simulation based on the electrodynamic theory of fluorescence enhancement showed a consistency between the measured enhancement values, the inter-epitope distances and the quantum yields. The feasibility of realizing proximity sensors operating at distance ranges larger than that of the conventional Forster transfer is demonstrated on the surface of living cells. Copyright © 2004 John Wiley& Sons, Ltd. |
| Subject | |
|
Topic |
mhc class-i |
|
Topic |
hla class-i |
|
Topic |
plasma-membrane |
|
Topic |
lipid rafts |
|
Topic |
photobleaching kinetics |
|
Topic |
electron-microscopy |
|
Topic |
labeled antibodies |
|
Topic |
antigen receptor |
|
Topic |
raman-scattering |
|
Topic |
rough surfaces |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Mol. Recognit. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
18 |
|
Part Detail:issue |
|
|
Part Number |
3 |
|
Extent(unit="pages") |
|
|
Start |
236 |
|
End |
253 |
|
Genre(marcgt) |
periodical |
| Identifier | ben05 |
| Identifier:DOI | 10.1002/jmr.730 |
| Location | |
|
URL |
http://dx.doi.org/10.1002/jmr.730 |
| Title Information | |
|
Title |
Photothermal Heterodyne Imaging of Individual Nonfluorescent Nanoclusters and Nanocrystals |
| Name:Personal | |
|
Name Part:given |
Stephane |
|
Name Part:family |
Berciaud |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Laurent |
|
Name Part:family |
Cognet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Gerhard A. |
|
Name Part:family |
Blab |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Brahim |
|
Name Part:family |
Lounis |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We introduce a new, highly sensitive, and simple heterodyne optical method for imaging individual nonfluorescent nanoclusters and nanocrystals. A 2 order of magnitude improvement of the signal is achieved compared to previous methods. This allows for the unprecedented detection of individual small absorptive objects such as metallic clusters (of 67 atoms) or nonluminescent semiconductor nanocrystals. The measured signals are in agreement with a calculation based on the scattering field theory from a photothermal-induced modulated index of refraction profile around the nanoparticle. |
| Subject | |
|
Topic |
nanostructured materials |
|
Topic |
photothermal effects |
|
Topic |
heterodyne detection |
|
Topic |
metal clusters |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Phys. Rev. Lett. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
93 |
|
Part Detail:issue |
|
|
Part Number |
25 |
|
Extent(unit="pages") |
|
|
Start |
257402 |
|
Genre(marcgt) |
periodical |
| Identifier | ber04 |
| Identifier:DOI | 10.1103/PhysRevLett.93.257402 |
| Location | |
|
URL |
http://link.aps.org/abstract/PRL/v93/e257402 |
|
URL |
http://dx.doi.org/10.1103/PhysRevLett.93.257402 |
| Title Information | |
|
Title |
Observation of Intrinsic Size Effects in the Optical Response of Individual Gold Nanoparticles |
| Name:Personal | |
|
Name Part:given |
Stéphane |
|
Name Part:family |
Berciaud |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Laurent |
|
Name Part:family |
Cognet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Philippe |
|
Name Part:family |
Tamarat |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Brahim |
|
Name Part:family |
Lounis |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | The photothermal heterodyne imaging method is used to study for the first time the absorption spectra of individual gold nanoparticles with diameters down to 5 nm. Intrinsic size effects that result in a broadening of the surface plasmon resonance are unambiguously observed. Dispersions in the peak energies and homogeneous widths of the single-particle resonances are revealed. The experimental results are analyzed within the frame of Mie theory. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Nano Lett. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
5 |
|
Part Detail:issue |
|
|
Part Number |
3 |
|
Extent(unit="pages") |
|
|
Start |
515 |
|
End |
518 |
|
Genre(marcgt) |
periodical |
| Identifier | ber05 |
| Identifier:DOI | 10.1021/nl050062t |
| Location | |
|
URL |
http://dx.doi.org/10.1021/nl050062t |
| Title Information | |
|
Title |
Spectral dependence of single molecule fluorescence enhancement |
| Name:Personal | |
|
Name Part:given |
Palash |
|
Name Part:family |
Bharadwaj |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Lukas |
|
Name Part:family |
Novotny |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | The fluorescence from a single molecule can be strongly enhanced near a metal nanoparticle acting as an optical antenna. We demonstrate the spectral tunability of this antenna effect and show that maximum enhancement is achieved when the emission frequency is red-shifted from the surface plasmon resonance of the particle. Our experimental results, using individual gold and silver particles excited at different laser-frequencies, are in good agreement with an analytical theory which predicts a different spectral dependence of the radiative and non-radiative decay rates. |
| Subject | |
|
Topic |
Surface plasmons |
|
Topic |
Energy transfer |
|
Topic |
Fluorescence |
|
Topic |
Nanomaterials |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Opt. Express |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
15 |
|
Part Detail:issue |
|
|
Part Number |
21 |
|
Extent(unit="pages") |
|
|
Start |
14266 |
|
End |
14274 |
|
Genre(marcgt) |
periodical |
| Identifier | bha07 |
| Location | |
|
URL |
http://www.opticsexpress.org/abstract.cfm?URI=oe-15-21-14266 |
| Title Information | |
|
Title |
Near-Infrared Luminescence from Small Gold Nanocrystals |
| Name:Personal | |
|
Name Part:given |
T. P. |
|
Name Part:family |
Bigioni |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
R. L. |
|
Name Part:family |
Whetten |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
O. |
|
Name Part:family |
Dag |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | A novel photoluminescence is reported for small metal nanocrystals in the near-infrared region (1.1-1.6 m). Near-infrared photoluminescence spectra were measured at room temperature for 1.1 and 1.7 nm Au nanocrystals using a 1.06 m excitation source. This photoluminescence is attributed to sp to sp-like transitions, analogous to intraband transitions in bulk gold; however, the exact mechanism is unknown. A conservative estimate for the quantum yield for the 1.7 nm gold nanocrystals is (4.4 ± 1.5) × 10-5 at room temperature, more than 5 orders of magnitude greater than that of bulk gold. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Phys. Chem. B |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
104 |
|
Part Detail:issue |
|
|
Part Number |
30 |
|
Extent(unit="pages") |
|
|
Start |
6983 |
|
End |
6986 |
|
Genre(marcgt) |
periodical |
| Identifier | big00 |
| Identifier:DOI | 10.1021/jp993867w |
| Location | |
|
URL |
http://dx.doi.org/10.1021/jp993867w |
| Title Information | |
|
Title |
Spontaneous light emission in complex nanostructures |
| Name:Personal | |
|
Name Part:given |
L. A. |
|
Name Part:family |
Blanco |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
F. J. |
|
Name Part:family |
García de Abajo |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | The spontaneous emission of an excited atom surrounded by different materials is studied in the framework of a semiclassical approach, where the transition dipole moment acts as the source of the emission field. The emission in the presence of semiinfinite media, metallic nanorings, spheres, gratings, and other complex geometries is investigated. Strong emission enhancement effects are obtained in some of these geometries associated to the excitation of plasmons (e.g., in nanorings or spheres). Furthermore, the emission is shown to take place only along narrow angular distributions when the atom is located inside a low-index dielectric and near its planar surface, or when metallic nanogratings are employed at certain resonant wave lengths. In particular, axially symmetric gratings made of real silver metal are considered, and both emission rate enhancement and focused far-field emission are achieved simultaneously when the grating is decorated with further nanostructures. |
| Subject | |
|
Topic |
spontaneous emission |
|
Topic |
excited states |
|
Topic |
electric moments |
|
Topic |
nanostructured materials |
|
Topic |
diffraction gratings |
|
Topic |
plasmons |
|
Topic |
silver |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Phys. Rev. B |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
69 |
|
Part Detail:issue |
|
|
Part Number |
20 |
|
Extent(unit="pages") |
|
|
Start |
205414 |
|
Genre(marcgt) |
periodical |
| Identifier | bla04 |
| Identifier:DOI | 10.1103/PhysRevB.69.205414 |
| Location | |
|
URL |
http://link.aps.org/abstract/PRB/v69/e205414 |
|
URL |
http://dx.doi.org/10.1103/PhysRevB.69.205414 |
| Title Information | |
|
Title |
Optical far-field microscopy of single molecules with 3.4\ nm lateral resolution |
| Name:Personal | |
|
Name Part:given |
A. |
|
Name Part:family |
Bloeß |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Y. |
|
Name Part:family |
Durand |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
M. |
|
Name Part:family |
Matsushita |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
H. |
|
Name Part:family |
van Dermeer |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
G. J. |
|
Name Part:family |
Brakenhoff |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J. |
|
Name Part:family |
Schmidt |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Summary Optical far-field imaging of single molecules in a frozen solution at 1.2 K with a lateral resolution of 3.4 nm is reported. The mechanical stability of the fluorescence microscope, especially of the low-temperature insert, allows for the localization of fluorescing molecules with a reproducibility of better than 5 nm within observation times up to 10 min. For observation times of 9 h the reproducibility of the lateral position is limited to about 20 nm due to mechanical drift. Lateral position and orientation of 314 single molecules, present within the confocal detection volume of 10 um3, are obtained. The possibility to correct for mechanical drift by monitoring the position of a spatial reference in the sample is demonstrated. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Journal of Microscopy |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
205 |
|
Part Detail:issue |
|
|
Part Number |
1 |
|
Extent(unit="pages") |
|
|
Start |
76 |
|
End |
85 |
|
Genre(marcgt) |
periodical |
| Identifier | blo02 |
| Identifier:DOI | 10.1046/j.0022-2720.2001.00971.x |
| Location | |
|
URL |
http://www.blackwell-synergy.com/doi/abs/10.1046/j.0022-2720.2001.00971.x |
|
URL |
http://dx.doi.org/10.1046/j.0022-2720.2001.00971.x |
| Title Information | |
|
Title |
Absorption and Scattering of Light by Small Particles |
| Name:Personal | |
|
Name Part:given |
Craig F. |
|
Name Part:family |
Bohren |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Donald R. |
|
Name Part:family |
Huffman |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre(bibtex) | book |
| Origin Information | |
|
Publisher |
John Wiley, New York u. a. |
|
Date Issued(encoding="marc") |
1998 |
|
Issuance |
monographic |
| Physical Description | |
|
Form(marcform) |
|
| Identifier | bookboh98 |
| Identifier:ISSN | 0-471-29340-7 |
| Title Information | |
|
Title |
Thermodynamic basis of the enhanced specificity of structured DNA probes |
| Name:Personal | |
|
Name Part:given |
Grégoire |
|
Name Part:family |
Bonnet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Sanjay |
|
Name Part:family |
Tyagi |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Albert |
|
Name Part:family |
Libchaber |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Fred Russell |
|
Name Part:family |
Kramer |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Molecular beacons are DNA probes that form a stem-and-loop structure and possess an internally quenched fluorophore. When they bind to complementary nucleic acids, they undergo a conformational transition that switches on their fluorescence. These probes recognize their targets with higher specificity than probes that cannot form a hairpin stem, and they easily discriminate targets that differ from one another by only a single nucleotide. Our results show that molecular beacons can exist in three different states: bound to a target, free in the form of a hairpin structure, and free in the form of a random coil. Thermodynamic analysis of the transitions between these states reveals that enhanced specificity is a general feature of conformationally constrained probes. |
| Subject | |
|
Topic |
molecular beacons / fluorescence quenching |
|
Topic |
phase diagram |
|
Topic |
mismatch discrimination |
|
Topic |
molecular recognition |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Proc. Natl. Acad. Sci. USA |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
96 |
|
Part Detail:issue |
|
|
Part Number |
11 |
|
Extent(unit="pages") |
|
|
Start |
6171 |
|
End |
6176 |
|
Genre(marcgt) |
periodical |
| Identifier | bon96 |
| Identifier:DOI | 10.1073/pnas.96.11.6171 |
| Location | |
|
URL |
http://www.pnas.org/cgi/content/abstract/96/11/6171 |
|
URL |
http://dx.doi.org/10.1073/pnas.96.11.6171 |
| Title Information | |
|
Title |
Fluctuations and local symmetry in single-molecule rhodamine 6G Raman scattering on silver nanocrystal aggregates |
| Name:Personal | |
|
Name Part:given |
K. A. |
|
Name Part:family |
Bosnick |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J. |
|
Name Part:family |
Jiang |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
L. E. |
|
Name Part:family |
Brus |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Surface enhanced Raman scattering (SERS) from Rhodamine 6G adsorbed on small, optically resolvable aggregates of silver nanoparticles is detectable at the single-molecule level. The signal fluctuates on a second time scale, presumably due to movement of the molecule in to and out of the SERS active "hot spots". The depolarization of the signal is found to be independent of the fluctuations, to vary from one spot to the next, and to be highly dependent on the direction of the incident electric field. The "SERS continuum" dominates the signal and is assumed to arise from electronic Raman processes in the metal that are triggered by chemisorption of the molecule in the hot spot. The source of the Raman signal is therefore highly localized around the hot spot. The local structure determines the depolarization properties and is often extremely anisotropic. Conversely, the Rayleigh scattering does not depend on the molecule or the hot spot and is delocalized over the whole aggregate, which is always found to be highly isotropic. The Rayleigh scattering therefore does not fluctuate and is always highly polarized. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Phys. Chem. B |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
106 |
|
Part Detail:issue |
|
|
Part Number |
33 |
|
Extent(unit="pages") |
|
|
Start |
8096 |
|
End |
8099 |
|
Genre(marcgt) |
periodical |
| Identifier | bos02 |
| Identifier:DOI | 10.1021/jp0256241 |
| Location | |
|
URL |
http://dx.doi.org/10.1021/jp0256241 |
| Title Information | |
|
Title |
Electromagnetic Interactions in Plasmonic Nanoparticle Arrays |
| Name:Personal | |
|
Name Part:given |
Alexandre |
|
Name Part:family |
Bouhelier |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Renaud |
|
Name Part:family |
Bachelot |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Jin Seo |
|
Name Part:family |
Im |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Gary P. |
|
Name Part:family |
Wiederrecht |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Gilles |
|
Name Part:family |
Lerondel |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Sergei |
|
Name Part:family |
Kostcheev |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Pascal |
|
Name Part:family |
Royer |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Single two-dimensional planar silver arrays and one-dimensional linear gold chains of nanoparticles were investigated by dark-field surface plasmon spectroscopy and studied as a function of interparticle distance, particle size, and number of particles. In agreement with recent theoretical predictions, a red shift of the surface plasmon resonance occurring in two-dimensional arrays was found for lattice spacings below 200 nm. This red shift is associated with a significant broadening of the resonance and is attributed to the onset of near-field interactions. We found that the relative contributions of the long-range and short-range interactions in two-dimensional arrays of particles are fundamentally different to those occurring in individual linear chains.an |
| Subject | |
|
Topic |
metallic nanoparticles |
|
Topic |
scattering |
|
Topic |
resonance |
|
Topic |
particles |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Phys. Chem. B |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
109 |
|
Part Detail:issue |
|
|
Part Number |
8 |
|
Extent(unit="pages") |
|
|
Start |
3195 |
|
End |
3198 |
|
Genre(marcgt) |
periodical |
| Identifier | bou05 |
| Identifier:DOI | 10.1021/jp046224b |
| Location | |
|
URL |
http://dx.doi.org/10.1021/jp046224b |
| Title Information | |
|
Title |
Imaging single metal-nanoparticles in cells by photothermal interference contrast |
| Name:Personal | |
|
Name Part:given |
David |
|
Name Part:family |
Boyer |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Philippe |
|
Name Part:family |
Tamarat |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Laurent |
|
Name Part:family |
Cognet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Michel |
|
Name Part:family |
Orrit |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Brahim |
|
Name Part:family |
Lounis |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre(bibtex) | conference |
| Genre(marcgt) | conference publication |
| Origin Information | |
|
Issuance |
monographic |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Manipulation and Analysis of Biomolecules, Cells, and Tissues |
|
Name:Personal |
|
|
Name Part:given |
Dan V. |
|
Name Part:family |
Nicolau |
|
Role |
|
|
Role Term:Text |
editor |
|
Name:Personal |
|
|
Name Part:given |
Joerg |
|
Name Part:family |
Enderlein |
|
Role |
|
|
Role Term:Text |
editor |
|
Name:Personal |
|
|
Name Part:given |
Robert C. |
|
Name Part:family |
Leif |
|
Role |
|
|
Role Term:Text |
editor |
|
Name:Personal |
|
|
Name Part:given |
Daniel L. |
|
Name Part:family |
Farkas |
|
Role |
|
|
Role Term:Text |
editor |
|
Type of Resource |
text |
|
Genre(marcgt) |
conference publication |
|
Origin Information |
|
|
Publisher |
SPIE |
|
Date Issued(encoding="marc") |
2003 |
|
Issuance |
monographic |
|
Part |
|
|
Extent(unit="pages") |
|
|
Start |
121 |
|
End |
125 |
|
Physical Description |
|
|
Form(marcform) |
|
| Identifier | boy03 |
| Identifier:DOI | 10.1117/12.485711 |
| Location | |
|
URL |
http://link.aip.org/link/?PSI/4962/121/1 |
|
URL |
http://dx.doi.org/10.1117/12.485711 |
| Title Information | |
|
Title |
Photothermal Imaging of Nanometer-Sized Metal Particles Among Scatterers |
| Name:Personal | |
|
Name Part:given |
David |
|
Name Part:family |
Boyer |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Philippe |
|
Name Part:family |
Tamarat |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Abdelhamid |
|
Name Part:family |
Maali |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Brahim |
|
Name Part:family |
Lounis |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Michel |
|
Name Part:family |
Orrit |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Science |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
297 |
|
Part Detail:issue |
|
|
Part Number |
5584 |
|
Extent(unit="pages") |
|
|
Start |
1160 |
|
End |
1163 |
|
Genre(marcgt) |
periodical |
| Identifier | boy02 |
| Location | |
|
URL |
http://www.sciencemag.org/cgi/content/abstract/297/5584/1160 |
| Title Information | |
|
Title |
Plasmon hybridization in nanoshell dimers |
| Name:Personal | |
|
Name Part:given |
Daniel W. |
|
Name Part:family |
Brandl |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Chris |
|
Name Part:family |
Oubre |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Peter |
|
Name Part:family |
Nordlander |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We extend the plasmon hybridization method to investigate the plasmon modes of metallic nanoshell dimers. The formalism is also generalized to include the effects of dielectric backgrounds. It is shown that the presence of dielectrics shifts the plasmon resonances of the individual nanoparticles to lower energies and screens their interaction in the dimer configuration. The net result is a redshift of dimer energies compared to the system without dielectrics and a weaker dependence of the dimer plasmon energies on dimer separation. We calculate the plasmon energies and optical absorption of nanoshell dimers as a function of dimer separation. The results are in excellent agreement with the results of finite difference time domain simulations. |
| Subject | |
|
Topic |
metals |
|
Topic |
nanoparticles |
|
Topic |
light absorption |
|
Topic |
plasmons |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Chem. Phys. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
123 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
024701 |
|
Genre(marcgt) |
periodical |
| Identifier | bra05 |
| Identifier:DOI | 10.1063/1.1949169 |
| Location | |
|
URL |
http://link.aip.org/link/?JCP/123/024701/1 |
|
URL |
http://dx.doi.org/10.1063/1.1949169 |
| Title Information | |
|
Title |
Theoretical Study of Electromagnetic Scattering by Metal Nanoparticles |
| Name:Personal | |
|
Name Part:given |
Samantha |
|
Name Part:family |
Bruzzone |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Marco |
|
Name Part:family |
Malvaldi |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Giovanni P. |
|
Name Part:family |
Arrighini |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Carla |
|
Name Part:family |
Guidotti |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Progress in near-field optical spectroscopy research on metal narroparticles demands a better understanding of the role of particle-particle and tip-sample interactions. In this perspective, we investigate theoretically, at a very moderate level of sophistication, the optical behavior of simple silver nanoparticle aggregates, in terms of a formalism involving a multipolar expansion of the fields involved, along with a simplified model for the optical behavior of nanostructures previously developed. In particular, the tip-sample interaction is taken into account roughly, treating the tip as an additional, single particle, characterized by proper dielectric behavior. |
| Subject | |
|
Topic |
near-field optics |
|
Topic |
clusters |
|
Topic |
gold |
|
Topic |
surface |
|
Topic |
light |
|
Topic |
microscopy |
|
Topic |
absorption |
|
Topic |
nanorods |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Phys. Chem. B |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
109 |
|
Part Detail:issue |
|
|
Part Number |
9 |
|
Extent(unit="pages") |
|
|
Start |
3807 |
|
End |
3812 |
|
Genre(marcgt) |
periodical |
| Identifier | bru05 |
| Identifier:DOI | 10.1021/jp045451a |
| Location | |
|
URL |
http://dx.doi.org/10.1021/jp045451a |
| Title Information | |
|
Title |
Measuring the Quantum Efficiency of the Optical Emission of Single Radiating Dipoles Using a Scanning Mirror |
| Name:Personal | |
|
Name Part:given |
B. C. |
|
Name Part:family |
Buchler |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
T. |
|
Name Part:family |
Kalkbrenner |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
C. |
|
Name Part:family |
Hettich |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
V. |
|
Name Part:family |
Sandoghdar |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Using scanning probe techniques, we show the controlled manipulation of the radiation from single dipoles. In one experiment we study the modification of the fluorescence lifetime of a single molecular dipole in front of a movable silver mirror. A second experiment demonstrates the changing plasmon spectrum of a gold nanoparticle in front of a dielectric mirror. Comparison of our data with theoretical models allows determination of the quantum efficiency of each radiating dipole. |
| Subject | |
|
Topic |
gold |
|
Topic |
nanoparticles |
|
Topic |
fluorescence |
|
Topic |
scanning probe microscopy |
|
Topic |
plasmons |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Physical Review Letters |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
95 |
|
Part Detail:issue |
|
|
Part Number |
6 |
|
Extent(unit="pages") |
|
|
Start |
063003 |
|
Genre(marcgt) |
periodical |
| Identifier | buc05 |
| Identifier:DOI | 10.1103/PhysRevLett.95.063003 |
| Location | |
|
URL |
http://link.aps.org/abstract/PRL/v95/e063003 |
|
URL |
http://dx.doi.org/10.1103/PhysRevLett.95.063003 |
| Title Information | |
|
Title |
Numerical Analysis |
| Name:Personal | |
|
Name Part:given |
Richard L. |
|
Name Part:family |
Burden |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J. Douglas |
|
Name Part:family |
Faires |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre(bibtex) | book |
| Origin Information | |
|
Publisher |
PWS-Kent |
|
Date Issued(encoding="marc") |
1989 |
|
edition |
4. |
|
Issuance |
monographic |
| Physical Description | |
|
Form(marcform) |
|
| Identifier | bookbur89 |
| Identifier:ISSN | 0-53491-585-X |
| Title Information | |
|
Title |
Spectroscopic Study and Evaluation of Red-Absorbing Fluorescent Dyes |
| Name:Personal | |
|
Name Part:given |
Volker |
|
Name Part:family |
Buschmann |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Kenneth D. |
|
Name Part:family |
Weston |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Markus |
|
Name Part:family |
Sauer |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | The spectroscopic characteristics (absorption, emission, and fluorescence lifetime) of 13 commercially available red-absorbing fluorescent dyes were studied under a variety of conditions. The dyes included in this study are Alexa647, ATTO655, ATTO680, Bodipy630/650, Cy5, Cy5.5, DiD, DY-630, DY-635, DY-640, DY-650, DY-655, and EVOblue30. The thorough characterization of this class of dyes will facilitate selection of the appropriate red-absorbing fluorescent labels for applications in fluorescence assays. The influences of polarity, viscosity, and the addition of detergent (Tween20) on the spectroscopic properties were investigated, and fluorescence correlation spectroscopy (FCS) was utilized to assess the photophysical properties of the dyes under high excitation conditions. The dyes can be classified into groups based on the results presented. For example, while the fluorescence quantum yield of ATTO655, ATTO680, and EVOblue30 is primarily controlled by the polarity of the surrounding medium, more hydrophobic and structurally flexible dyes of the DY-family are strongly influenced by the viscosity of the medium and the addition of detergents. Covalent binding of the dyes to biotin and subsequent addition of streptavidin results in reversible fluorescence quenching or changes in the relaxation time of other photophysical processes of some dyes, most likely due to interactions with tryptophan residues in the streptavin binding site. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Bioconj. Chem. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
14 |
|
Part Detail:issue |
|
|
Part Number |
1 |
|
Extent(unit="pages") |
|
|
Start |
195 |
|
End |
204 |
|
Genre(marcgt) |
periodical |
| Identifier | bus03 |
| Identifier:DOI | 10.1021/bc025600x |
| Location | |
|
URL |
http://dx.doi.org/10.1021/bc025600x |
| Title Information | |
|
Title |
Analytical Ultracentrifugation for Characterizing Nanocrystals and Their Bioconjugates |
| Name:Personal | |
|
Name Part:given |
Michelle |
|
Name Part:family |
Calabretta |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Jennifer A. |
|
Name Part:family |
Jamison |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Joshua C. |
|
Name Part:family |
Falkner |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Yunping |
|
Name Part:family |
Liu |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Benjamin D. |
|
Name Part:family |
Yuhas |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Kathleen S. |
|
Name Part:family |
Matthews |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Vicki L. |
|
Name Part:family |
Colvin |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Analytical ultracentrifugation (AU) provides a general way to probe the polydispersity of nanoparticles and the formation of bioconjugates in solution. Unconjugated gold nanocrystals show sedimentation coefficient distributions that are in agreement with size distributions as measured by TEM. AU is sensitive to the size/shape changes elicited by conjugation, in this case to lactose repressor (LacI). AU data reveal saturating protein concentrations for conjugates that correspond to the measured stoichiometry of the complex under these conditions. |
| Subject | |
|
Topic |
single dna-molecules |
|
Topic |
nanoparticle probes |
|
Topic |
gold nanoparticles |
|
Topic |
enzymatic-activity |
|
Topic |
particle-size |
|
Topic |
protein |
|
Topic |
sedimentation |
|
Topic |
monodisperse |
|
Topic |
repressor |
|
Topic |
oligonucleotides |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Nano Lett. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
5 |
|
Part Detail:issue |
|
|
Part Number |
5 |
|
Extent(unit="pages") |
|
|
Start |
963 |
|
End |
967 |
|
Genre(marcgt) |
periodical |
| Identifier | cal05 |
| Identifier:DOI | 10.1021/nl047926f |
| Location | |
|
URL |
http://dx.doi.org/10.1021/nl047926f |
| Title Information | |
|
Title |
Characterisation and determination of stability and functionality of biofunctionalised colloidal gold nanoparticles |
| Name:Personal | |
|
Name Part:given |
M. |
|
Name Part:family |
Campas |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
I. |
|
Name Part:family |
Katakis |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Colloidal gold nanoparticles were conjugated with oligonucleotides to create biorecognition nanomodules. The efficiency of conjugation was determined by fluorescence using a FITC-labelled thiolated model probe and by enzyme-linked nanoparticle assay (ELINA) using a digoxigeninlabelled thiolated model probe. The thermal stability of the conjugation was determined by displacement and fluorescence measurement of the FITC probe. Functionality for hybridisation was determined by enzyme-linked oligonucleotide assay (ELONA). It was found that the equilibrium oligonucleotide surface coverage reached 37% of the total nanoparticle area. These results could be verified by ELINA. Under hybridisation conditions that allowed the detection of 4-point mutations on a target 19-rner sequence (1 h at 65 C), it was found that the bio functionalised nanomodules lost between 10 and 30% of the conjugated biorecognition molecules. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Analytica Chimica Acta |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
556 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
306 |
|
End |
312 |
|
Genre(marcgt) |
periodical |
| Identifier | cam06 |
| Identifier:DOI | 10.1016/j.aca.2005.09.032 |
| Location | |
|
URL |
http://dx.doi.org/10.1016/j.aca.2005.09.032 |
| Title Information | |
|
Title |
Nanoparticles with Raman Spectroscopic Fingerprints for DNA and RNA Detection |
| Name:Personal | |
|
Name Part:given |
YunWei Charles |
|
Name Part:family |
Cao |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Rongchao |
|
Name Part:family |
Jin |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Chad A. |
|
Name Part:family |
Mirkin |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Multiplexed detection of oligonucleotide targets has been performed with gold nanoparticle probes labeled with oligonucleotides and Raman-active dyes. The gold nanoparticles facilitate the formation of a silver coating that acts as a surface-enhanced Raman scattering promoter for the dye-labeled particles that have been captured by target molecules and an underlying chip in microarray format. The strategy provides the high-sensitivity and high-selectivity attributes of gray-scale scanometric detection but adds multiplexing and ratioing capabilities because a very large number of probes can be designed based on the concept of using a Raman tag as a narrow-band spectroscopic fingerprint. Six dissimilar DNA targets with six Raman-labeled nanoparticle probes were distinguished, as well as two RNA targets with single nucleotide polymorphisms. The current unoptimized detection limit of this method is 20 femtomolar. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Science |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
297 |
|
Part Detail:issue |
|
|
Part Number |
5586 |
|
Extent(unit="pages") |
|
|
Start |
1536 |
|
End |
1540 |
|
Genre(marcgt) |
periodical |
| Identifier | cao02 |
| Identifier:DOI | 10.1126/science.297.5586.1536 |
| Location | |
|
URL |
http://www.sciencemag.org/cgi/content/abstract/297/5586/1536 |
|
URL |
http://dx.doi.org/10.1126/science.297.5586.1536 |
| Title Information | |
|
Title |
Radiative and non-radiative decay of a single molecule close to a metallic nanoparticle |
| Name:Personal | |
|
Name Part:given |
R. |
|
Name Part:family |
Carminati |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J.-J. |
|
Name Part:family |
Greffet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
C. |
|
Name Part:family |
Henkel |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
J. M. |
|
Name Part:family |
Vigoureux |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We study the spontaneous emission of a single emitter close to a metallic nanoparticle, with the aim to clarify the distance dependence of the radiative and non-radiative decay rates. We derive analytical formulas based on a dipole-dipole model, and show that the non-radiative decay rate follows a R-6 dependence at short distance, where R is the distance between the emitter and the center of the nanoparticle, as in Forster's energy transfer. The distance dependence of the radiative decay rate is more subtle. It is chiefly dominated by a R-3 dependence, a R-6 dependence being visible at plasmon resonance. The latter is a consequence of radiative damping in the effective dipole polarizability of the nanoparticle. The different distance behavior of the radiative and non-radiative decay rates implies that the apparent quantum yield always vanishes at short distance. Moreover, non-radiative decay is strongly enhanced when the emitter radiates at the plasmon-resonance frequency of the nanoparticle. |
| Subject | |
|
Topic |
Fluorescence |
|
Topic |
Single molecule |
|
Topic |
Nanoparticle |
|
Topic |
Quenching |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Optics Communications |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
261 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
368 |
|
End |
375 |
|
Genre(marcgt) |
periodical |
| Identifier | car06 |
| Identifier:DOI | 10.1016/j.optcom.2005.12.009 |
| Location | |
|
URL |
http://www.sciencedirect.com/science/article/B6TVF-4HWXJYH-6/2/cca56b2e57299a31f0f57c5740d3e545 |
|
URL |
http://dx.doi.org/10.1016/j.optcom.2005.12.009 |
| Title Information | |
|
Title |
The properties of streptavidin, a biotin-binding protein produced by Streptomycetes |
| Name:Personal | |
|
Name Part:given |
Louis |
|
Name Part:family |
Chaiet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Frank J. |
|
Name Part:family |
Wolf |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | Streptavidin, a crystalline protein isolated from fermentation filtrates of streptomycetes has been reported to have biotin-binding ability similar to avidin. A comparison has been made between streptavidin and avidin from egg white using microbiological, physical, and chemical methods. Streptavidin binds four molecules of biotin. Chemical analysis shows the absence of hexoses and amino sugars associated with avidin and reveals differences in amino acid content. Electrophoretic studies give different mobilities for streptavidin and avidin. Thus, streptavidin is a new type of biotin-binding protein. |
| Related Item:Host | |
|
Title Information |
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|
Title |
Arch. Biochem. Biophys. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
106 |
|
Extent(unit="pages") |
|
|
Start |
1 |
|
End |
5 |
|
Genre(marcgt) |
periodical |
| Identifier | cha64 |
| Identifier:DOI | 10.1016/0003-9861(64)90150-X |
| Location | |
|
URL |
http://www.sciencedirect.com/science/article/B6WB5-4DXBJSC-Y9/2/143fd5a5d2d91f695504e7220b58ef62 |
|
URL |
http://dx.doi.org/10.1016/0003-9861(64)90150-X |
| Title Information | |
|
Title |
Optical force acting on a molecule near a metal sphere: effects of decay rate change and resonance frequency shift |
| Name:Personal | |
|
Name Part:given |
Railing |
|
Name Part:family |
Chang |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We present a theoretical analysis of optical force on a molecule near a metal sphere by taking into account the change of decay rate as well as the shift of resonance frequency in the response of the metal surface. As a result, the optical force is determined not only by the gradient of field but also the polarizability depending on the position and orientation of the molecule. In addition, we find the resulting reactive force cannot be expressed as a gradient of a scalar potential, in contrast to the usual situations. |
| Subject | |
|
Topic |
Optical force |
|
Topic |
Surface plasmon |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Optics Comm. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
249 |
|
Part Detail:issue |
|
|
Part Number |
1-3 |
|
Extent(unit="pages") |
|
|
Start |
329 |
|
End |
337 |
|
Genre(marcgt) |
periodical |
| Identifier | cha05 |
| Identifier:DOI | 10.1016/j.optcom.2004.12.046 |
| Location | |
|
URL |
http://dx.doi.org/10.1016/j.optcom.2004.12.046 |
| Title Information | |
|
Title |
Local-field enhancement in an optical force metallic nanotrap: application to single-molecule spectroscopy |
| Name:Personal | |
|
Name Part:given |
Patrick C. |
|
Name Part:family |
Chaumet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Adel |
|
Name Part:family |
Rahmani |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Manuel |
|
Name Part:family |
Nieto-Vesperinas |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We study the local-field enhancement in a nanocavity created by optical nanomanipulation. Recently we showed that a metallic probe can modify the optical force experienced by a metallic particle and generate a material selective trapping potential. We show that the same configuration used for optical forces can be used to control both in magnitude and tune the local-field enhancement around the particle at resonance. The spatial resolution and material selectivity of this technique, allied to its capability to manipulate particles at the nanometric level, may offer a new and versatile way to achieve surface-enhanced Raman scattering spectroscopy at the single-molecule level. |
| Subject | |
|
Topic |
Physical optics : Electromagnetic theory |
|
Topic |
Scattering : Scattering |
|
Topic |
Spectroscopy : Spectroscopy |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Appl. Opt. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
45 |
|
Part Detail:issue |
|
|
Part Number |
21 |
|
Extent(unit="pages") |
|
|
Start |
5185 |
|
End |
5190 |
|
Genre(marcgt) |
periodical |
| Identifier | cha06 |
| Location | |
|
URL |
http://www.opticsinfobase.org/abstract.cfm?URI=ao-45-21-5185 |
| Title Information | |
|
Title |
Nile Red-Adsorbed Gold Nanoparticles for Selective Determination of Thiols Based on Energy Transfer and Aggregation |
| Name:Personal | |
|
Name Part:given |
Shih-Ju |
|
Name Part:family |
Chen |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Huan-Tsung |
|
Name Part:family |
Chang |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | For the first time, an aqueous solution of 32-nm gold nanoparticles (GNPs), to which Nile red (NR) has been noncovalently adsorbed, has been used for sensing thiols. The as-prepared NRGNPs fluoresce weakly as a result of fluorescence resonance energy transfer between NR and the GNPs. The fluorescence of a solution containing NRGNPs at pH 4.0 increases upon the addition of thiols, but not when amines, acids, alcohols, bovine serum albumin, or hemoglobin are added. This phenomenon allows for the selective determination of thiols such as cysteamine and homocysteine, which have limits of detection of 10.2 and 10.9 nM, respectively, at a signal-to-noise ratio of 3. Interestingly, we have found that the excitation (ex = 480 nm), emission (em = 610 nm), and mass spectra (m/z 282) of the substance that desorbs from the GNPs in the presence of thiols are different from those of NR (ex = 580 nm; em = 652 nm; m/z 318), which indicates that a new product forms. When simultaneously conducting fluorescence and colorimetric assays, the selectivity of this approach further improves because at pH 4.0, the color of the NRGNPs does not change in the presence of negatively charged thiols, (e.g., N-(2-mercaptopropionyl)glycine), but changes from maroon to purple and lavender in the presence of neutral thiols (e.g., 3-mercapto-1,2-propanediol) and positively charged thiols (e.g., cysteamine), respectively, as a result of aggregation. This feature allows the types of thiols to be determined at concentrations >1.0 and 0.1 µM by the naked eye and by UV-vis absorption, respectively. Depending on the rate at which the NRGNP color changes, reduced glutathione (slow) is readily distinguishable from oxidized glutathione (no aggregation and no displacement) and from cysteine and homocysteine (fast). |
| Subject | |
|
Topic |
performance liquid-chromatography |
|
Topic |
induced fluorescence detection |
|
Topic |
total homocysteine |
|
Topic |
surface |
|
Topic |
plasma |
|
Topic |
polynucleotides |
|
Topic |
nanocrystals |
|
Topic |
spectroscopy |
|
Topic |
recognition |
|
Topic |
proteins |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Anal. Chem. |
|
Origin Information |
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Issuance |
continuing |
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Part |
|
|
Part Detail:volume |
|
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Part Number |
76 |
|
Part Detail:issue |
|
|
Part Number |
13 |
|
Extent(unit="pages") |
|
|
Start |
3727 |
|
End |
3734 |
|
Genre(marcgt) |
periodical |
| Identifier | che04 |
| Identifier:DOI | 10.1021/ac049787s |
| Location | |
|
URL |
http://dx.doi.org/10.1021/ac049787s |
| Title Information | |
|
Title |
Dependence of Fluorescence Intensity on the Spectral Overlap between Fluorophores and Plasmon Resonant Single Silver Nanoparticles |
| Name:Personal | |
|
Name Part:given |
Y. |
|
Name Part:family |
Chen |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Department of Chemistry, University of Washington, Seattle, Washington 98195-1700 |
| Name:Personal | |
|
Name Part:given |
K. |
|
Name Part:family |
Munechika |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Department of Chemistry, University of Washington, Seattle, Washington 98195-1700 |
| Name:Personal | |
|
Name Part:given |
D. S. |
|
Name Part:family |
Ginger |
|
Role |
|
|
Role Term:Text |
author |
|
affiliation |
Department of Chemistry, University of Washington, Seattle, Washington 98195-1700 |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We investigate the fluorescence from dyes coupled to individual DNA-functionalized metal nanoparticles. We use single-particle darkfield scattering and fluorescence microscopy to correlate the fluorescence intensity of the dyes with the localized surface plasmon resonance (LSPR) spectra of the individual metal nanoparticles to which they are attached. For each of three different dyes, we observe a strong correlation between the fluorescence intensity of the dye and the degree of spectral overlap with the plasmon resonance of the nanoparticle. On average, we observe the brightest fluorescence from dyes attached to metal nanoparticles that have a LSPR scattering peak 40-120 meV higher in energy than the emission peak of the fluorophore. These results should prove useful for understanding and optimizing metal-enhanced fluorescence. |
| Related Item:Host | |
|
Title Information |
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|
Title |
Nano Lett. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
7 |
|
Part Detail:issue |
|
|
Part Number |
3 |
|
Extent(unit="pages") |
|
|
Start |
690 |
|
End |
696 |
|
Identifier:ISSN |
1530-6984 |
|
Genre(marcgt) |
periodical |
| Identifier | che07 |
| Identifier:DOI | 10.1021/nl062795z |
| Location | |
|
URL |
http://dx.doi.org/10.1021/nl062795z |
| Title Information | |
|
Title |
Radiation and lifetimes of atoms inside dielectric particles |
| Name:Personal | |
|
Name Part:given |
H. |
|
Name Part:family |
Chew |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | The transition rates of atoms inside spherical dielectric particles are computed and studied as functions of the transition frequency and of the physical properties of the host particle. The rates are found to range from about 0.2 to more than 1500 times the free-space value, depending on the location of the atom and other relevant physical parameters. The radiation from distributions of atoms inside liquid drops is also studied. Analytic and numerical results are given for the case of a uniform distribution of excited atoms. Large enhancements of the power output (some 100 times the value for the same distribution in bulk material) are found to occur under resonant conditions. |
| Subject | |
|
Topic |
energy-level transitions |
|
Topic |
lifetime |
|
Topic |
surfaces |
|
Topic |
atoms |
|
Topic |
resonance |
|
Topic |
spheres |
|
Topic |
dielectric materials |
|
Topic |
interactions |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Phys. Rev. A |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
38 |
|
Part Detail:issue |
|
|
Part Number |
7 |
|
Extent(unit="pages") |
|
|
Start |
3410 |
|
End |
3416 |
|
Genre(marcgt) |
periodical |
| Identifier | che88 |
| Identifier:DOI | 10.1103/PhysRevA.38.3410 |
| Location | |
|
URL |
http://link.aps.org/abstract/PRA/v38/p3410 |
|
URL |
http://dx.doi.org/10.1103/PhysRevA.38.3410 |
| Title Information | |
|
Title |
Transition rates of atoms near spherical surfaces |
| Name:Personal | |
|
Name Part:given |
H. |
|
Name Part:family |
Chew |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We study the transition rates of atoms inside and outside dielectric spheres. The rates are calculated classically, and the results are shown to agree with those obtained using other approaches. For atoms outside, our analytic results are equivalent to those of Ruppin in the case of zero conductivity. Numerical results are presented, which show that resonances have important effects on the transition rates, and that enhancement factors of hundreds are possible under suitable conditions. The Journal of Chemical Physics is copyrighted by The American Institute of Physics. |
| Subject | |
|
Topic |
energy-level transitions |
|
Topic |
lifetime |
|
Topic |
surfaces |
|
Topic |
atoms |
|
Topic |
resonance |
|
Topic |
spheres |
|
Topic |
dielectric materials |
|
Topic |
interactions |
| Related Item:Host | |
|
Title Information |
|
|
Title |
J. Chem. Phys. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
87 |
|
Part Detail:issue |
|
|
Part Number |
2 |
|
Extent(unit="pages") |
|
|
Start |
1355 |
|
End |
1360 |
|
Genre(marcgt) |
periodical |
| Identifier | che87 |
| Identifier:DOI | 10.1063/1.453317 |
| Location | |
|
URL |
http://dx.doi.org/10.1063/1.453317 |
| Title Information | |
|
Title |
Model for Raman and fluorescent scattering by molecules embedded in small particles |
| Name:Personal | |
|
Name Part:given |
H. |
|
Name Part:family |
Chew |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
P. J. |
|
Name Part:family |
McNulty |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
M. |
|
Name Part:family |
Kerker |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | A model for Raman and fluorescent scattering by molecules embedded in small particles is described. This takes into account the effect of the particle's geometrical and optical properties upon the unshifted field which excites the molecular transitions within the particle, and upon the shifted field. Formulas are given which relate the angular distribution of the scattered radiation to the nature of the molecular scatterers and to the size and refractive index of the particle. These results are relevant for current problems in cell biology and atmospheric physics. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Phys. Rev. A |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
13 |
|
Part Detail:issue |
|
|
Part Number |
1 |
|
Extent(unit="pages") |
|
|
Start |
396 |
|
End |
404 |
|
Genre(marcgt) |
periodical |
| Identifier | che76 |
| Identifier:DOI | 10.1103/PhysRevA.13.396 |
| Location | |
|
URL |
http://link.aps.org/abstract/PRA/v13/p396 |
|
URL |
http://dx.doi.org/10.1103/PhysRevA.13.396 |
| Title Information | |
|
Title |
Site-Directed Mutagenesis Studies of the High-Affinity Streptavidin-Biotin Complex: Contributions of Tryptophan Residues 79, 108, and 120 |
| Name:Personal | |
|
Name Part:given |
Ashutosh |
|
Name Part:family |
Chilkoti |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Philip H. |
|
Name Part:family |
Tan |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Patrick S. |
|
Name Part:family |
Stayton |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | We report the functional characterization of site-directed biotin binding-site mutants of recombinant core streptavidin. The mutagenesis studies were aimed at characterizing the contributions of Trp residues known to contact biotin that have been postulated to control the exceptional binding affinity observed in this system. The functional properties of single site-directed mutants replacing Trp residues with Phe or Ala at positions 79, 108, and 120 were investigated by quantitating the EC50 binding parameters of these mutants to biotin and 2-iminobiotin in an ELISA format. The biotin EC50 for all mutants was the same as wild-type streptavidin, demonstrating that their DeltaKa values relative to wild type were <106. The conservative W79F and W108F mutants displayed only a 2- to 3-fold increase in EC50 for 2-iminobiotin, corresponding to an estimated DeltaKa <10, while the W120F mutant displayed a much greater alteration in 2-iminobiotin EC50, corresponding to an estimated DeltaKa of 102. These DeltaKa values are likely to reflect similar changes for biotin. The 2-iminobiotin EC50 values for the Ala mutants fell outside the accessible concentration range of the ELISA assay, demonstrating that these mutations lowered the Ka by a factor of 104 to 106. Direct estimation of biotin Ka values for W79A, W120A, and W120F in an ultrafiltration binding assay yielded Ka values of 4.3 x 107 M-1, 8.6 x 106 M-1, and >5 x 109 M-1, respectively, in excellent agreement with the ELISA estimates of DeltaKa with 2-iminobiotin as a reporter ligand. The results of these preliminary functional studies suggest that these aromatic side chains contribute significantly to the streptavidin-biotin binding free energy. |
| Related Item:Host | |
|
Title Information |
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|
Title |
Proc. Natl. Acad. Sci. USA |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
92 |
|
Part Detail:issue |
|
|
Part Number |
5 |
|
Extent(unit="pages") |
|
|
Start |
1754 |
|
End |
1758 |
|
Genre(marcgt) |
periodical |
| Identifier | chi95 |
| Identifier:DOI | 10.1073/pnas.92.5.1754 |
| Location | |
|
URL |
http://www.pnas.org/cgi/content/abstract/92/5/1754 |
|
URL |
http://dx.doi.org/10.1073/pnas.92.5.1754 |
| Title Information | |
|
Title |
A New Structural Transition of Serum Albumin Dependent on the State of Cys34 |
| Name:Personal | |
|
Name Part:given |
John |
|
Name Part:family |
Christodoulou |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Peter J. |
|
Name Part:family |
Sadler |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Alan |
|
Name Part:family |
Tucker |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Eur. J. Biochem. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
225 |
|
Part Detail:issue |
|
|
Part Number |
1 |
|
Extent(unit="pages") |
|
|
Start |
363 |
|
End |
368 |
|
Genre(marcgt) |
periodical |
| Identifier | chr94 |
| Identifier:DOI | 10.1111/j.1432-1033.1994.00363.x |
| Location | |
|
URL |
http://dx.doi.org/10.1111/j.1432-1033.1994.00363.x |
| Title Information | |
|
Title |
Plasmon Polaritons in Finite-Length Metal-Nanoparticle Chains: The Role of Chain Length Unravelled |
| Name:Personal | |
|
Name Part:given |
D. S. |
|
Name Part:family |
Citrin |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | While the conceptual framework for nanoplasmonic waveguides composed of a chain of noncontacting metal nanoparticles usually neglects the effects of the ends, the long-range nature of the interparticle coupling underlying the electromagnetic transport means that finite chain length can play an important role. Here, the complex energies of the plasmon-polariton modes in finite-length nanoparticle chains are calculated to ascertain the effects of chain length on the mode dispersion and the radiative contribution to the attenuation. The results indicate that, for typical parameters, the infinite-chain limit is reached with 10 nanoparticles. Thus, even for chain lengths well exceeding the attenuation length, long-range coupling of distant nanoparticles is shown to impact the dispersion and radiative loss. |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Nano Lett. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
5 |
|
Part Detail:issue |
|
|
Part Number |
5 |
|
Extent(unit="pages") |
|
|
Start |
985 |
|
End |
989 |
|
Genre(marcgt) |
periodical |
| Identifier | cit05 |
| Identifier:DOI | 10.1021/nl050513+ |
| Location | |
|
URL |
http://dx.doi.org/10.1021/nl050513+ |
| Title Information | |
|
Title |
Directed Assembly of Discrete Gold Nanoparticle Groupings Using Branched DNA Scaffolds |
| Name:Personal | |
|
Name Part:given |
Shelley A. |
|
Name Part:family |
Claridge |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Sarah L. |
|
Name Part:family |
Goh |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Jean M. J. |
|
Name Part:family |
Fréchet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Shara C. |
|
Name Part:family |
Williams |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
Christine M. |
|
Name Part:family |
Micheel |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
A. Paul |
|
Name Part:family |
Alivisatos |
|
Role |
|
|
Role Term:Text |
author |
| Type of Resource | text |
| Genre | journal article |
| Genre(bibtex) | article |
| Origin Information | |
|
Issuance |
monographic |
| Abstract | The concept of self-assembled dendrimers is explored for the creation of discrete nanoparticle assemblies. Hybridization of branched DNA trimers and nanoparticle-DNA conjugates results in the synthesis of nanoparticle trimer and tetramer complexes. Multiple tetramer architectures are investigated, utilizing Au-DNA conjugates with varying secondary structural motifs. Hybridization products are analyzed by gel electrophoresis, and discrete bands are observed corresponding to structures with increasing numbers of hybridization events. Samples extracted from each band are analyzed by transmission electron microscopy, and statistics compiled from micrographs are used to compare assembly characteristics for each architecture. Asymmetric structures are also produced in which both 5- and 10-nm Au particles are assembled on branched scaffolds. |
| Subject | |
|
Topic |
plasmon resonances |
|
Topic |
building-blocks |
|
Topic |
covalent dna |
|
Topic |
oligonucleotides |
|
Topic |
nanostructures |
|
Topic |
functionalization |
|
Topic |
electrophoresis |
|
Topic |
nanotechnology |
|
Topic |
construction |
|
Topic |
nanocrystals |
| Related Item:Host | |
|
Title Information |
|
|
Title |
Chem. Mater. |
|
Origin Information |
|
|
Issuance |
continuing |
|
Part |
|
|
Part Detail:volume |
|
|
Part Number |
17 |
|
Part Detail:issue |
|
|
Part Number |
7 |
|
Extent(unit="pages") |
|
|
Start |
1628 |
|
End |
1635 |
|
Genre(marcgt) |
periodical |
| Identifier | cla05 |
| Identifier:DOI | 10.1021/cm0484089 |
| Location | |
|
URL |
http://dx.doi.org/10.1021/cm0484089 |
| Title Information | |
|
Title |
Single metallic nanoparticle imaging for protein detection in cells |
| Name:Personal | |
|
Name Part:given |
L. |
|
Name Part:family |
Cognet |
|
Role |
|
|
Role Term:Text |
author |
| Name:Personal | |
|
Name Part:given |
C. |
|
Name Part:family |
Tardin |
|
Role |
|
|
Role Term:Text |
author |