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Relating SERS intensity to specific plasmon modes on sphere segment void surfaces

Relating SERS intensity to specific plasmon modes on sphere segment void surfaces
Relating SERS intensity to specific plasmon modes on sphere segment void surfaces
Colloidal-crystal templated electrodeposition can be used to fabricate sphere segment void (SSV) substrates that show large, reproducible enhancements in surface-enhanced Raman spectroscopy (SERS). These SSV substrates support a variety of plasmon modes and can be fully characterized by white light dispersion measurements allowing the direct identification of the modes predicted by computational models of the nanoscale optical fields. Comparing plasmon absorption with SERS enhancements as a function of sphere segment void diameter and metal thickness for a series of SSV substrates allows the identification of the specific plasmon modes, which give rise to large SERS enhancements at different laser wavelengths and in different media. The measured SERS intensities show direct correlation to the plasmonic modes of the structures providing a guide to the design of efficient surfaces for SERS.
1932-7447
9284-9289
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Cole, Robin M.
29fa4536-7e68-43ee-acfa-673f0768af9c
Soares, Bruno F.
de2633b2-caaa-4a45-90fa-9a525f6f76f6
Pelfrey, Suzanne H.
650d43ac-e77f-49ad-9b04-8ed732159c97
Russell, Andrea E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Cole, Robin M.
29fa4536-7e68-43ee-acfa-673f0768af9c
Soares, Bruno F.
de2633b2-caaa-4a45-90fa-9a525f6f76f6
Pelfrey, Suzanne H.
650d43ac-e77f-49ad-9b04-8ed732159c97
Russell, Andrea E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075

Mahajan, Sumeet, Cole, Robin M., Soares, Bruno F., Pelfrey, Suzanne H., Russell, Andrea E., Baumberg, Jeremy J. and Bartlett, Philip N. (2009) Relating SERS intensity to specific plasmon modes on sphere segment void surfaces. The Journal of Physical Chemistry C, 113 (21), 9284-9289. (doi:10.1021/jp900661u).

Record type: Article

Abstract

Colloidal-crystal templated electrodeposition can be used to fabricate sphere segment void (SSV) substrates that show large, reproducible enhancements in surface-enhanced Raman spectroscopy (SERS). These SSV substrates support a variety of plasmon modes and can be fully characterized by white light dispersion measurements allowing the direct identification of the modes predicted by computational models of the nanoscale optical fields. Comparing plasmon absorption with SERS enhancements as a function of sphere segment void diameter and metal thickness for a series of SSV substrates allows the identification of the specific plasmon modes, which give rise to large SERS enhancements at different laser wavelengths and in different media. The measured SERS intensities show direct correlation to the plasmonic modes of the structures providing a guide to the design of efficient surfaces for SERS.

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Published date: 28 May 2009
Organisations: Chemistry

Identifiers

Local EPrints ID: 145015
URI: http://eprints.soton.ac.uk/id/eprint/145015
ISSN: 1932-7447
PURE UUID: 22fb939b-8203-4567-b014-d5217bff12dd
ORCID for Sumeet Mahajan: ORCID iD orcid.org/0000-0001-8923-6666
ORCID for Andrea E. Russell: ORCID iD orcid.org/0000-0002-8382-6443
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 15 Apr 2010 15:18
Last modified: 12 Nov 2019 02:02

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