Engineering SERS via absorption control in novel hybrid Ni/Au nanovoids
Engineering SERS via absorption control in novel hybrid Ni/Au nanovoids
Nanoscale voids (or ‘anti-nanoparticles’) embedded in gold films possess plasmon modes with a strong field component at the cavity entrance, radically different to nanoparticle plasmon modes. By creating Ni/Au hybrid rim nanostructures we show how selective coupling to void plasmons provides strong electric field enhancements leading to large surface-enhanced Raman scattering (SERS) signals from molecules adsorbed on the nanovoid film. Since the rim plasmon modes are relatively independent of the supporting void material these results pave the way for hybrid nanovoid structures which combine plasmonic and catalytic properties of the constituent materials in a controllable and reproducible way.
13298-13308
Cole, Robin M.
29fa4536-7e68-43ee-acfa-673f0768af9c
Mahajan, Sumeet
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Bartlett, Phil N.
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Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
2009
Cole, Robin M.
29fa4536-7e68-43ee-acfa-673f0768af9c
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Bartlett, Phil N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Cole, Robin M., Mahajan, Sumeet, Bartlett, Phil N. and Baumberg, Jeremy J.
(2009)
Engineering SERS via absorption control in novel hybrid Ni/Au nanovoids.
Optics Express, 17 (16), .
(doi:10.1364/OE.17.013298).
Abstract
Nanoscale voids (or ‘anti-nanoparticles’) embedded in gold films possess plasmon modes with a strong field component at the cavity entrance, radically different to nanoparticle plasmon modes. By creating Ni/Au hybrid rim nanostructures we show how selective coupling to void plasmons provides strong electric field enhancements leading to large surface-enhanced Raman scattering (SERS) signals from molecules adsorbed on the nanovoid film. Since the rim plasmon modes are relatively independent of the supporting void material these results pave the way for hybrid nanovoid structures which combine plasmonic and catalytic properties of the constituent materials in a controllable and reproducible way.
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Published date: 2009
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Times Cited: 11
Organisations:
Chemistry
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Local EPrints ID: 342905
URI: http://eprints.soton.ac.uk/id/eprint/342905
ISSN: 1094-4087
PURE UUID: 9a5699c2-02c1-4f75-8c32-236fddc2847f
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Date deposited: 19 Sep 2012 12:00
Last modified: 15 Mar 2024 03:28
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Author:
Robin M. Cole
Author:
Jeremy J. Baumberg
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