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Engineering SERS via absorption control in novel hybrid Ni/Au nanovoids

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.
1094-4087
13298-13308
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.
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), 13298-13308. (doi:10.1364/OE.17.013298).

Record type: Article

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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More information

Published date: 2009
Additional Information: Times Cited: 11
Organisations: Chemistry

Identifiers

Local EPrints ID: 342905
URI: http://eprints.soton.ac.uk/id/eprint/342905
ISSN: 1094-4087
PURE UUID: 9a5699c2-02c1-4f75-8c32-236fddc2847f
ORCID for Sumeet Mahajan: ORCID iD orcid.org/0000-0001-8923-6666
ORCID for Phil N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 19 Sep 2012 12:00
Last modified: 18 Feb 2021 17:09

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