Spatially resolved surface enhanced Raman spectroscopy: Feasibility, intensity dependence on sampling area and attomole mass sensitivity

Richard P Van Duyne*, Kurt L. Haller, Robert I. Altkorn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

Spatially resolved surface enhanced Raman scattering (SR SERS) from μm sized sampling areas has been observed in the electrochemical environment for the first time. Analysis of the equation for SR SERS intensity reveals that the detected signal should be area independent. This is demonstrated experimentally for the aqueous pyridine/Ag model system using 200 kW cm-2 peak laser irradiance. The mass detection limits for SR SERS are found to be on the order of 105 molecules or 0.17 attomoles!

Original languageEnglish (US)
Pages (from-to)190-196
Number of pages7
JournalChemical Physics Letters
Volume126
Issue number2
DOIs
StatePublished - May 2 1986

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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