Improved SERS performance from Au nanopillar arrays by abridging the pillar tip spacing by Ag sputtering

Adv Mater. 2010 Oct 1;22(37):4136-9. doi: 10.1002/adma.201001179.

Abstract

Ag-capped Au nanopillar arrays on a resin supporter (see left upper figure), with a typical adjacent pillar tip gap of 10 nm, show obviously higher surface-enhanced Raman scattering (SERS) sensitivity (right column in red) than that of the bare Au nanopillar array while using 10 nM R6G as probe molecules. The large-area Ag-capped Au nanopillar array has potential in trace detection of special chemicals.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum Oxide / chemistry
  • Gold / chemistry*
  • Metal Nanoparticles / chemistry*
  • Metal Nanoparticles / ultrastructure
  • Polychlorinated Biphenyls / analysis
  • Silver / chemistry*
  • Spectrum Analysis, Raman / methods*

Substances

  • Silver
  • Gold
  • Polychlorinated Biphenyls
  • Aluminum Oxide