Surface-enhanced Raman scattering on gold nanotrenches and nanoholes

Weisheng Yue, Yang Yang, Zhihong Wang, Longqing Chen, Ka Chun Wong, Ahad A. Syed, Zong Chen, Xianbin Wang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Dependent effects on edge-to-edge distance and incidence polarization in surface-enhanced Raman Scattering (SERS) were studied in detection of 4-mercaptopyridine (4-MPy) molecules absorbed on gold nanotrenches and nanoholes. The gold nanostructures with controllable size and period were fabricated using electron-beam lithography. Large SERS enhancement in detection of 4-MPy molecules on both nanostructred substrates was observed. The SERS enhancement increased exponentially with decrease of edge to-edge distance for both the nanotrenches and nanoholes while keeping the sizes of the nanotrenches and nanoholes unchanged. Investigation of polarization dependence showed that the SERS enhancement of nanotrenches was much more sensitive to the incidence polarizations than that of nanoholes. © 2012 American Scientific Publishers.
Original languageEnglish (US)
Pages (from-to)3018-3025
Number of pages8
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number4
DOIs
StatePublished - Apr 1 2012

ASJC Scopus subject areas

  • Biomedical Engineering
  • Bioengineering
  • Materials Science(all)
  • Chemistry(all)
  • Condensed Matter Physics

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