Issue 1, 2006

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

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 10–102 greater for substrates that have plasmon band overlap with the excitation source than for substrates whose plasmon bands do not.

Graphical abstract: Aspect ratio dependence on surface enhanced Raman scattering using silver and gold nanorod substrates

Article information

Article type
Paper
Submitted
06 Sep 2005
Accepted
05 Oct 2005
First published
18 Oct 2005

Phys. Chem. Chem. Phys., 2006,8, 165-170

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

C. J. Orendorff, L. Gearheart, N. R. Jana and C. J. Murphy, Phys. Chem. Chem. Phys., 2006, 8, 165 DOI: 10.1039/B512573A

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