Surface plasmon radiation forces

Date
2006-06
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Source Title
Physical Review Letters
Print ISSN
0031-9007
Electronic ISSN
1079-7114
Publisher
The American Physical Society
Volume
96
Issue
23
Pages
1 - 4
Language
English
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Abstract

We report the first experimental observation of momentum transfer from a surface plasmon to a single dielectric sphere. Using a photonic force microscope, we measure the plasmon radiation forces on different polystyrene beads as a function of their distance from the metal surface. We show that the force magnitude at resonance is strongly enhanced compared to a nonresonant illumination. Measurements performed as a function of the probe particle size indicate that optical manipulation by plasmon fields has a strong potential for optical sorting.

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Published Version (Please cite this version)