Open Access Nano Express

Gold nanoparticle ensembles as heaters and actuators: melting and collective plasmon resonances

Alexander O Govorov1*, Wei Zhang1, Timur Skeini1, Hugh Richardson1, Jaebeom Lee2 and Nicholas A Kotov2

Author affiliations

1 Department of Physics and Astronomy, Ohio University, Athens, OH, 45701, USA

2 Department of Chemical Engineering, Department of Materials Science and Engineering and Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA

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Citation and License

Nanoscale Research Letters 2006, 1:84-90  doi:10.1007/s11671-006-9015-7

Published: 26 July 2006

Abstract

We describe the peculiar conditions under which optically driven gold nanoparticles (NPs) can significantly increase temperature or even melt a surrounding matrix. The heating and melting processes occur under light illumination and involve the plasmon resonance. For the matrix, we consider water, ice, and polymer. Melting and heating the matrix becomes possible if a nanoparticle size is large enough. Significant enhancement of the heating effect can appear in ensembles of NPs due to an increase of a volume of metal and electric-field amplification.

Keywords:
Metal nanoparticles; Heat generation; Plasmons