Reversal of the optical force in a plasmonic trap

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. (C) 2008 Optical Society of America


Published in:
Optics Letters, 33, 3001-3003
Year:
2008
Publisher:
Optical Society of America
ISSN:
0146-9592
Keywords:
Laboratories:




 Record created 2011-04-11, last modified 2018-09-13

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