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Reversal of the optical force in a plasmonic trap.

  • Huang L Nanophotonics and Metrology Laboratory, Swiss Federal Institute of Technology Lausanne (EPFL), EPFL-STI-NAM, ELG Station 11, Lausanne, Switzerland. lina.huang@epfl.ch
  • Martin OJ
  • 2008-12-17
Published in:
  • Optics letters. - 2008
English We study in detail the optical forces generated by a plasmonic trap on a plasmonic nanoparticle. The permittivity of the trapped particle is tuned using a Drude model. The interplay between the plasmon resonances of the trap and of the particle can produce different regimes leading to attractive or repulsive forces. Hence a particle will be trapped or repulsed depending on its permittivity. Such a physical system should provide new functionalities for lab-on-the-chip applications.
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https://sonar.ch/global/documents/96825
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