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Issue 1, 2006
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Aspect ratio dependence on surface enhanced Raman scattering using silver and gold nanorod substrates

Christopher J. Orendorff,a  Latha Gearheart,a  Nikhil R. Janaa  and  Catherine J. Murphy*a 
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* Corresponding authors

a University of South Carolina, Department of Chemistry and Biochemistry, Columbia, USA
E-mail: murphy@mail.chem.sc.edu

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

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Publication details

The article was received on 06 Sep 2005, accepted on 05 Oct 2005 and first published on 18 Oct 2005


Article type: Paper
DOI: 10.1039/B512573A
Citation: Phys. Chem. Chem. Phys., 2006,8, 165-170
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    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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