Wavelength modulated surface enhanced (resonance) Raman scattering for background-free detection

Bavishna B. Praveen, Christian Steuwe, Michael Mazilu, Kishan Dholakia, Sumeet Mahajan

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Spectra in surface-enhanced Raman scattering (SERS) are always accompanied by a continuum emission called the 'background' which complicates analysis and is especially problematic for quantification and automation. Here, we implement a wavelength modulation technique to eliminate the background in SERS and its resonant version, surface-enhanced resonance Raman scattering (SERRS). This is demonstrated on various nanostructured substrates used for SER(R)S. An enhancement in the signal to noise ratio for the Raman bands of the probe molecules is also observed. This technique helps to improve the analytical ability of SERS by alleviating the problem due to the accompanying background and thus making observations substrate independent.

Original languageEnglish
Pages (from-to)2816-2820
Number of pages5
JournalAnalyst
Volume138
Issue number10
DOIs
Publication statusPublished - 2013 May 21

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy
  • Electrochemistry

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