Characteristic length and temperature dependence of surface enhanced raman scattering of nanoporous gold

X. Y. Lang, P. F. Guan, L. Zhang, T. Fujita, M. W. Chen

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Surface enhanced Raman scattering (SERS) of nanoporous gold (NPG) with various nanopore sizes was investigated at temperatures ranging from 80 to 300 K using rhodamine 6G as probe molecules. It was found that the SERS intensity dramatically increases as temperature and nanopore size decrease. Theoretical analysis indicates that the improved SERS enhancements result from the confluence effects of the electron-phonon scattering, the finite ligament size effect, and the electromagnetic coupling between neighboring gold ligaments, which demonstrate the electromagnetic origin of the SERS effect of NPG.

Original languageEnglish
Pages (from-to)10956-10961
Number of pages6
JournalJournal of Physical Chemistry C
Volume113
Issue number25
DOIs
Publication statusPublished - 2009 Jun 25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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