Assessing Metal Nanofabricated Substrates for Surface-Enhanced Raman Scattering (SERS) Activity and Reproducibility

Authors: Guicheteau, Jason; Christesen, Steven; Emge, Darren; Wilcox, Phillip; Fountain, Augustus W.

Source: Applied Spectroscopy, Volume 65, Issue 2, Pages 36A-52A and 127-241 (February 2011) , pp. 144-151(8)

Publisher: Society for Applied Spectroscopy

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Abstract:

Surface-enhanced Raman spectroscopy (SERS) has been shown to be an effective technique for increasing the detection sensitivity in chemical and biological applications. SERS has a distinct advantage over normal Raman spectroscopy, with enhancements typically greater than 104 over the normal Raman signal; however, this advantage in sensitivity comes with a caveat: controlling the spectroscopic reproducibility and enhancement activity of metal nanostructured substrates can be difficult. We present a survey and subsequent data analysis performed on several nanostructured substrates designed for SERS, including silver and gold colloids, silver nanorods, gold nanoshells, and commercially manufactured gold nanostructures.

Keywords: NANOPARTICLE SUBSTRATES; RAMAN SPECTROSCOPY; REPRODUCIBILITY; SERS; SPECTRAL DISCRIMINATION; STANDARDIZED TESTING PROTOCOLS; SUBSTRATE PERFORMANCE; SURFACE-ENHANCED RAMAN SPECTROSCOPY

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/10-06080

Affiliations: U.S. Army, Edgewood Chemical Biological Center, Research and Technology Directorate, Aberdeen Proving Ground, Maryland 21010-5424, USA

Publication date: February 1, 2011

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