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J. Mater. Chem., 2008, 18, 2415 - 2419, DOI: 10.1039/b714950f


Shape-dependent plasmon resonances of gold nanoparticles

Colleen L. Nehl and Jason H. Hafner


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.

Graphical abstract image for this article  (ID: b714950f)