title: Optical trapping of metal-dielectric nanoparticle clusters near photonic crystal microcavities.
abstract: We predict the formation of optically trapped, metal-dielectric nanoparticle clusters above photonic crystal microcavities. We determine the conditions on particle size and position for a gold particle to be trapped above the microcavity. We then show that strong field redistribution and enhancement near the trapped gold nanoparticle results in secondary trapping sites for a pair of dielectric nanoparticles.
authors.affiliation: Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, USA. mejiapra@usc.edu
authors.forename: Camilo A
authors.initials: CA
authors.lastname: Mejia
authors.forename: Ningfeng
authors.initials: N
authors.lastname: Huang
authors.forename: Michelle L
authors.initials: ML
authors.lastname: Povinelli