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Phys Rev Lett. 2007 Sep 21;99(12):127401. Epub 2007 Sep 17.

Laser-induced forces in metallic nanosystems: the role of plasmon resonances.

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Department of Physics and Astronomy, University of California, Irvine, California 92697, USA.

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  • Phys Rev Lett. 2008 Feb 8;100(5):059901.


We present calculations of the laser-induced force between metallic nanospheres, similar and dissimilar in character, and that between a metallic nanosphere and a planar surface. When the separation between these objects is in the 0.5-2 nm range, we find very strong resonances in the laser-induced force associated with excitation of plasmon resonances. Measurement of such forces will provide direct access to the plasmon enhancements of laser fields so critical to optical spectroscopy in the nanoenvironment.

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