Optical forces between dielectric nanoparticles in an optical vortex

D.S. Bradshaw, David Andrews

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We report a study on the optical forces between a pair of dielectric particles, based on quantum electrodynamics. At a fundamental level these forces result from a stimulated scattering process which entails a virtual photon relay between the two particles. Results for a variety of systems are secured from a completely general analysis that accommodates a system with arbitrary dielectric properties (with regard to shape, frequency response etc.) in an optical field of arbitrary complexity. Specific results are obtained and exhibited for: (a) optical forces between nanoparticles, and specifically between carbon nanotubes; (b) the effects of optical ordering, clustering and trapping associated with twisted (Laguerre-Gaussian) laser beams.
Original languageEnglish
Pages (from-to)87-95
Number of pages9
JournalProceedings of SPIE
Publication statusPublished - 1 Jan 2005

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