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Phys Rev Lett. 2006 Jun 16;96(23):238101. Epub 2006 Jun 13.

Surface plasmon radiation forces.

Author information

  • 1ICFO -- Institut de Ciències Fotòniques, 08860 Castelldefels (Barcelona), Spain.

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.

PMID:
16803408
[PubMed - indexed for MEDLINE]
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