Silver-coated inverse opals formed from polystyrene spheres for surface-enhanced Raman scattering

Weiqiang Mu*, Dae Kue Hwang, R P H Chang, John B Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We have developed a new substrate for surface-enhanced Raman scattering (SERS) measurements involving a thin silver layer deposited over an ion-etched TiO2 inverse opal. The latter is formed by chemically infiltrating a polystyrene opal array with TiO2 followed by a thermal decomposition of the spheres. The SERS response of the these substrates is examined for several sphere sizes and lasers wavelengths; the results show that such substrates yield high enhance factors, comparable to substrates involving a silver layer deposited directly on a polystyrene opal array.

Original languageEnglish (US)
Pages (from-to)941-944
Number of pages4
JournalJournal of Raman Spectroscopy
Volume42
Issue number5
DOIs
StatePublished - May 1 2011

Keywords

  • enhancement factors
  • inverse opal arrays
  • silver hole arrays
  • surface-enhanced Raman scattering

ASJC Scopus subject areas

  • Materials Science(all)
  • Spectroscopy

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