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Surface plasmon radiation forces

Journal article
Authors Giovanni Volpe
Romain Quidant
Gonçal Badenes
Dmitri Petrov
Published in Physical Review Letters
Volume 96
ISSN 00319007
Publication year 2006
Published at
Language en
Subject categories Physical Sciences

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. © 2006 The American Physical Society.

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