Gradient and nongradient contributions to plasmon-enhanced optical forces on silver nanoparticles

Vance Wong, Mark A Ratner

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

We use a computational method based on the discrete-dipole approximation (DDA) to calculate the gradient and nongradient contributions to optical forces on nanometer sized silver particles in water. We find that, due to a contribution that is usually neglected, nongradient forces are often non-negligible. This result is not a consequence of an approach to the dipole limit. We suggest that this method could provide useful input for a more detailed understanding of the physics relevant to optical trapping and binding phenomena.

Original languageEnglish
Article number075416
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number7
DOIs
Publication statusPublished - 2006

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Computational methods
Silver
Physics
silver
dipoles
Nanoparticles
gradients
nanoparticles
Water
trapping
physics
approximation
water

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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