Silver-based surface enhanced Raman scattering (SERS) substrate fabrication using nanolithography and site selective electroless deposition

Maria Laura Coluccio*, Gobind Das, Federico Mecarini, Francesco Gentile, Antonella Pujia, Luisa Bava, Rossana Tallerico, Patrizio Candeloro, Carlo Liberale, Francesco De Angelis, Enzo Di Fabrizio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

91 Scopus citations

Abstract

In this work active SERS (surface enhanced Raman scattering) substrates are obtained by electron beam lithography and site selective electroless deposition technique. The combination of these two techniques allows to obtain well-defined metal structures, with a considerable advantage in Raman signal enhancement and in device reproducibility. The active-substrates are composed of silver, gold or a combination of the two metals, with different nanoparticles characteristics, obtained by varying metal deposition time. Rhodamine 6G was used as probe molecules for SERS experiments, showing that this new active substrate has high sensitivity to SERS response and allows to give Raman scattering also for diluted solutions (10-20 M).

Original languageEnglish (US)
Pages (from-to)1085-1088
Number of pages4
JournalMicroelectronic Engineering
Volume86
Issue number4-6
DOIs
StatePublished - Apr 1 2009

Keywords

  • Active SERS substrates
  • Electroless deposition
  • Gold
  • Nanoparticles
  • Raman spectroscopy
  • Silver

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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