Results 251 to 260 of about 270,893 (292)

Voltage-Gated Metal-Enhanced Fluorescence

Journal of Fluorescence, 2009
We demonstrate the influence of electrical current on the ability of surface plasmons to amplify fluorescence signatures. An applied direct current across Silver Island Films (SIFs) of low electrical resistance perturbs the fluorescence enhancement.
Yongxia, Zhang, Kadir, Aslan, Chris D, Geddes   +2 more
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Low Temperature Metal-Enhanced Fluorescence

Journal of Fluorescence, 2007
In this short letter, we describe the effects of low temperature on the Metal-Enhanced Fluorescence (MEF) phenomenon. Fluorophores close to Silver Island Films (SiFs) show on average two- to ten-fold enhancements in their fluorescence signatures at room temperature.
Yongxia, Zhang, Kadir, Aslan, Michael J R, Previte, Chris D, Geddes   +3 more
openaire   +2 more sources

Editorial: Metal-Enhanced Fluorescence

Journal of Fluorescence, 2002
As fluorescence spectroscopists we are mostly all yields, decreased lifetimes, increased photostability, and familiar with doing spectroscopy in bulk samples, where an increase in Forster transfer distances and directional the solutions are typically transparent to the emitted radia- emission.
Chris D. Geddes, Joseph R. Lakowicz
openaire   +1 more source

Metal-enhanced fluorescence: effect of surface coating

SPIE Proceedings, 2014
Metal Enhanced Fluorescence (MEF), a phenomenon arising when a fluorophore is in closed proximity to a metallic structure such as metallic films or nanostructures, is seen as a way to increase the amount of reactive oxygen species produced by the irradiation of the protoporphyrin IX (PpIX), a photosensitizer commonly used in photodynamic therapy. Here,
Lismont, Marjorie, François, Alexandre, Dreesen, Laurent, Monro, Tanya M.   +3 more
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Metal-enhanced fluorescence

Physical Chemistry Chemical Physics, 2013
Preface. Contributors. Mental-Enhanced Fluorescence: Progress Towards a Unified Plasmon-Fluorophore Description (Kadir Aslan and Chris D. Geddes). Spectral Profile Modifications In Metal-Enhanced Fluorescence (E. C. Le Ru, J. Grand, N. Felidj, J. Aubard, G. Levi, A. Hohenau, J. R. Krenn, E. Blackie and P. G. Etchegoin).
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Sonication-Assisted Metal-Enhanced Fluorescence-Based Bioassays

Analytical Chemistry, 2009
A new bioassay technique, sonication-assisted metal-enhanced fluorescence, which is based on the combined use of ultrasound waves and metal-enhanced fluorescence (MEF), is reported. In this technique, low-intensity ultrasound waves significantly reduce the bioassay time by creating a temperature gradient between the bulk and the surface, which is ...
Kadir, Aslan, Yongxia, Zhang, Chris D, Geddes   +2 more
openaire   +2 more sources

Metal-Enhanced Fluorescence: Potential Applications in HTS

Combinatorial Chemistry & High Throughput Screening, 2003
Metallic surfaces and particles can have dramatic effects on fluorescence, including localized excitation, increased quantum yields, increased photostability and increased distances for resonance energy transfer (RET), and directional emission. While all these effects have not yet been realized in a single system, metal-enhanced fluorescence promises ...
Chris D, Geddes, Ignacy, Gryczynski, Joanna, Malicka, Zygmunt, Gryczynski, Joseph R, Lakowicz   +4 more
openaire   +2 more sources

Metal-enhanced fluorescence from copper substrates

Applied Physics Letters, 2007
In this letter, the authors report the observation of metal-enhanced fluorescence emission from fluorophores deposited on copper (Cu) substrates. Different thicknesses of Cu particulate films (from 1 to 5nm) were deposited onto glass slides using thermal vapor deposition.
Zhang, Yongxia, Aslan, Kadir, Previte, Michael J. R., Geddes, Chris   +3 more
openaire   +1 more source

Metal-Enhanced Fluorescence from Chromium Nanodeposits

The Journal of Physical Chemistry C, 2008
Over the last several years, our laboratory has described in detail the favorable effects of fluorophores in close proximity to metallic nanoparticles. Metal nanoparticles comprised of gold, silver, copper, and zinc show enhanced fluorescence intensities and photostabilities for fluorophores positioned within 10 nm of the particles.
Rodd Pribik, Kadir Aslan, Yongxia Zhang, Chris D. Geddes   +3 more
openaire   +1 more source

Metal-enhanced fluorescence: More than we thought

Frontiers in Optics + Laser Science 2021, 2021
We show that in metal-dielectric core-shell nanoparticles, unusually thick dielectric coatings produce extreme fluorescence enhancement with enhancement factor F ¯ ≳ 3000 for emitters located near Au@dielectric spherical particles under realistic conditions.
Ilia L. Rasskazov, Alexander Moroz, P. Scott Carney   +2 more
openaire   +1 more source