Probing the ultimate limits of plasmonic enhancement.
Abstract
Metals support surface plasmons at optical wavelengths and have the ability to localize
light to subwavelength regions. The field enhancements that occur in these regions
set the ultimate limitations on a wide range of nonlinear and quantum optical phenomena.
We found that the dominant limiting factor is not the resistive loss of the metal,
but rather the intrinsic nonlocality of its dielectric response. A semiclassical model
of the electronic response of a metal places strict bounds on the ultimate field enhancement.
To demonstrate the accuracy of this model, we studied optical scattering from gold
nanoparticles spaced a few angstroms from a gold film. The bounds derived from the
models and experiments impose limitations on all nanophotonic systems.
Type
Journal articleSubject
GoldHydrodynamics
Light
Metal Nanoparticles
Nanospheres
Scattering, Radiation
Surface Plasmon Resonance
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https://hdl.handle.net/10161/7576Published Version (Please cite this version)
10.1126/science.1224823Publication Info
(2012). Probing the ultimate limits of plasmonic enhancement. Science, 337(6098). pp. 1072-1074. 10.1126/science.1224823. Retrieved from https://hdl.handle.net/10161/7576.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Ashutosh Chilkoti
Alan L. Kaganov Distinguished Professor of Biomedical Engineering
Ashutosh Chilkoti is the Alan L. Kaganov Professor of Biomedical Engineering and Chair
of the Department of Biomedical Engineering at Duke University.
My research in biomolecular engineering and biointerface science focuses on the development
of new molecular tools and technologies that borrow from molecular biology, protein
engineering, polymer chemistry and surface science that we then exploit for the development
of applications that span the range from bioseparations, plasmonic bio
David R. Smith
James B. Duke Distinguished Professor of Electrical and Computer Engineering
Dr. David R. Smith is currently the James B. Duke Professor of Electrical and Computer
Engineering Department at Duke University. He is also Director of the Center for Metamaterials
and Integrated Plasmonics at Duke and holds the positions of Adjunct Associate Professor
in the Physics Department at the University of California, San Diego, and Visiting
Professor of Physics at Imperial College, London. Dr. Smith received his Ph.D. in
1994 in Physics from the University of California, San Dieg
Yaroslav A. Urzhumov
Adjunct Assistant Professor in the Department of Electrical and Computer Engineering
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<![endif]-->Dr. Urzhumov is Adjunct Assistant Professor of ECE at Duke University,
and also a Technologist at the Metamaterials Commercialization Center of Intellectual
Ventures. Previously a research faculty at Duke, he works on applied and theoretical
aspects of metama
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