Shape-dependent plasmon resonances of gold nanoparticles

Colleen L. Nehl; Jason H. Hafner

doi:10.1039/B714950F

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Journal of Materials Chemistry

Issue 21, 2008

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Shape-dependent plasmon resonances of gold nanoparticles

Colleen L. Nehl and Jason H. Hafner

J. Mater. Chem., 2008, 18, 2415-2419

DOI: 10.1039/B714950F
Received 28 Sep 2007, Accepted 07 Jan 2008
First published on the web 11 Feb 2008

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Localized surface plasmon resonances in noble metal nanoparticles cause enhanced optical absorption and scattering that is tunable through the visible and near-infrared. Furthermore, these resonances create large local electric field enhancements at the nanoparticle surfaces, essentially focussing light at the nanometer scale. These properties suggest a range of applications, including biomedical imaging, therapeutics, and molecular sensing. Here we review some recent advances regarding shape-dependent optical properties of two specific nanoparticle geometries: gold nanorods and branched gold nanoparticles.

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Shape-dependent plasmon resonances of gold nanoparticles

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