Issue 37, 2011
From the journal:

Physical Chemistry Chemical Physics

SERS from two-tier sphere segment void substrates†

Robert P. Johnson,a   Sumeet Mahajan,b   Mamdouh E. Abdelsalam,a   Robin M. Cole,b   Jeremy J. Baumberg,b   Andrea E. Russella  and  Philip N. Bartlett*a  

* Corresponding authors

a School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK
E-mail: pnb@soton.ac.uk
Fax: + 44-23-8059-3781
Tel: + 44-23-8059-2373

b Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK

Abstract

Sphere segment void, or inverse opal, films prepared from a variety of coinage metals have shown promise as reliable and reproducible substrates for surface enhanced Raman spectroscopy (SERS). Sphere segment void substrates are prepared from colloidal templates consisting of one or more layers of polystyrene spheres. In this paper, we investigate the reflection spectra and SERS for a gold film consisting of two-tiers of spherical cavities, and show that the best SERS enhancements are obtained from substrates consisting of just a single layer of sphere segment voids.

Graphical abstract: SERS from two-tier sphere segment void substrates

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Article information

DOI
https://doi.org/10.1039/C1CP21126A
Article type
Paper
Submitted
11 Apr 2011
Accepted
01 Aug 2011
First published
22 Aug 2011

Phys. Chem. Chem. Phys., 2011,13, 16661-16665

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SERS from two-tier sphere segment void substrates

R. P. Johnson, S. Mahajan, M. E. Abdelsalam, R. M. Cole, J. J. Baumberg, A. E. Russell and P. N. Bartlett, Phys. Chem. Chem. Phys., 2011, 13, 16661 DOI: 10.1039/C1CP21126A

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