Leveraging nanoscale plasmonic modes to achieve reproducible enhancement of light.
Abstract
The strongly enhanced and localized optical fields that occur within the gaps between
metallic nanostructures can be leveraged for a wide range of functionality in nanophotonic
and optical metamaterial applications. Here, we introduce a means of precise control
over these nanoscale gaps through the application of a molecular spacer layer that
is self-assembled onto a gold film, upon which gold nanoparticles (NPs) are deposited
electrostatically. Simulations using a three-dimensional finite element model and
measurements from single NPs confirm that the gaps formed by this process, between
the NP and the gold film, are highly reproducible transducers of surface-enhanced
resonant Raman scattering. With a spacer layer of roughly 1.6 nm, all NPs exhibit
a strong Raman signal that decays rapidly as the spacer layer is increased.
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https://hdl.handle.net/10161/4095Published Version (Please cite this version)
10.1021/nl102443pPublication Info
(2010). Leveraging nanoscale plasmonic modes to achieve reproducible enhancement of light.
Nano Lett, 10(10). pp. 4150-4154. 10.1021/nl102443p. Retrieved from https://hdl.handle.net/10161/4095.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 D
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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