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Phys Chem Chem Phys. 2006 Jan 7;8(1):165-70. Epub 2005 Oct 18.

Aspect ratio dependence on surface enhanced Raman scattering using silver and gold nanorod substrates.

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  • 1Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA.

Abstract

Silver and gold nanorods with aspect ratios from 1 to 16 have been used as substrates for surface enhanced Raman spectroscopy (SERS) in colloidal solution. The nanorod aspect ratio is varied to give different degrees of overlap between the nanorod longitudinal plasmon band and excitation source in order to determine its effect on overall surface enhancement. Results suggest that enhancement factors are a factor of 10-10(2) greater for substrates that have plasmon band overlap with the excitation source than for substrates whose plasmon bands do not.

PMID:
16482257
[PubMed - indexed for MEDLINE]
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