Journal ArticleDOI
Gold nanoshells improve single nanoparticle molecular sensors
Gunnar Raschke,S. Brogl,Andrei S. Susha,A. L. Rogach,Thomas A. Klar,Jochen Feldmann,B. Fieres,Nikolay Petkov,Thomas Bein,Alfons Nichtl,K. Kürzinger +10 more
TLDR
In this article, the authors focus on the narrow homogeneous line width of only 180 meV and show that the particle plasmon resonance responds more sensitively to changes in the environment, the biological spectral window is accessible and the scattering spectra show sharper resonances.Abstract:
Molecular sensors based on scattering spectroscopy of single gold nanoparticles can be improved three-fold by the use of gold nanoshells instead of solid gold nanoparticles. The particle plasmon resonance responds more sensitively to changes in the environment, the biological spectral window is accessible, and the scattering spectra show sharper resonances. In particular, we focus our discussion on the narrow homogeneous line width of only 180 meV.read more
Citations
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Book
Plasmonics: Fundamentals and Applications
TL;DR: In this paper, the authors discuss the role of surface plasmon polaritons at metal/insulator interfaces and their application in the propagation of surfaceplasmon waveguides.
Journal ArticleDOI
Localized Surface Plasmon Resonance Sensors
Kathryn M. Mayer,Jason H. Hafner +1 more
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Gold and Silver Nanoparticles in Sensing and Imaging: Sensitivity of Plasmon Response to Size, Shape, and Metal Composition
TL;DR: This work investigated the dependence of the sensitivity of the surface plasmon resonance response to changes in their surrounding environment and the relative contribution of optical scattering to the total extinction, on the size and shape of nanorods and the type of metal, that is, Au vs Ag.
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Bimetallic Nanocrystals: Syntheses, Properties, and Applications
TL;DR: A comprehensive review of recent research activities on bimetallic nanocrystals, featuring key examples from the literature that exemplify critical concepts and place a special emphasis on mechanistic understanding.
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Review of Some Interesting Surface Plasmon Resonance-enhanced Properties of Noble Metal Nanoparticles and Their Applications to Biosystems
TL;DR: In this article, a review of the plasmon resonance (SPR) enhanced optical properties of noble metal nanoparticles is presented, with an emphasis on the recent advances in the utility of these plasmoric properties in molecular-specific imaging and sensing, photo-diagnostics, and selective photothermal therapy.
References
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A nanoscale optical biosensor: sensitivity and selectivity of an approach based on the localized surface plasmon resonance spectroscopy of triangular silver nanoparticles.
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Single Silver Nanoparticles as Real-Time Optical Sensors with Zeptomole Sensitivity
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Journal ArticleDOI
Drastic reduction of plasmon damping in gold nanorods.
Carsten Sönnichsen,Thomas Franzl,T. Wilk,G. von Plessen,Jochen Feldmann,Orla M. Wilson,Paul Mulvaney +6 more
TL;DR: In this paper, the dephasing of particle plasmons was investigated using light-scattering spectroscopy on individual gold nanoparticles, and a drastic reduction of the plasmon de-phasing rate in nanorods as compared to small nanospheres due to a suppression of interband damping was found.