TITLE

Geometric effect on surface enhanced Raman scattering of nanoporous gold: Improving Raman scattering by tailoring ligament and nanopore ratios

AUTHOR(S)
Lang, X. Y.; Chen, L. Y.; Guan, P. F.; Fujita, T.; Chen, M. W.
PUB. DATE
May 2009
SOURCE
Applied Physics Letters;5/25/2009, Vol. 94 Issue 21, p213109
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have synthesized nanoporous gold (NPG) films with a nanostructure consisting of small nanopores and large gold ligaments by the combination of chemical dealloying and electroless plating. The NPG films exhibit dramatic improvement in surface enhanced Raman scattering (SERS) in comparison with the conventional NPG. The superior SERS effect of the NPG films results from the confluence effect of enhanced local surface plasmon fields and electromagnetic coupling between ligaments, as well as the weak plasmon damping with increasing gold ligament sizes.
ACCESSION #
40637729

 

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