Shape-dependent plasmon resonances of gold nanoparticles | Zendy

Colleen L. Nehl | Zendy; Jason H. Hafner | Zendy

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Shape-dependent plasmon resonances of gold nanoparticles

Author(s) -

Colleen L. Nehl,

Jason H. Hafner

Publication year - 2008

Publication title -

journal of materials chemistry

Language(s) - English

Resource type - Journals

eISSN - 1364-5501

pISSN - 0959-9428

DOI - 10.1039/b714950f

Subject(s) - nanoparticle , nanorod , plasmon , materials science , surface plasmon resonance , noble metal , nanotechnology , colloidal gold , localized surface plasmon , scattering , nanometre , surface plasmon , light scattering , electric field , optoelectronics , optics , metal , physics , quantum mechanics , metallurgy , composite material

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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