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.
© 2012 Optical Society of America
Diffraction and Gratings
Original Manuscript: July 17, 2012
Manuscript Accepted: July 29, 2012
Published: August 29, 2012
Vol. 7, Iss. 11 Virtual Journal for Biomedical Optics
Camilo A. Mejia, Ningfeng Huang, and Michelle L. Povinelli, "Optical trapping of metal-dielectric nanoparticle clusters near photonic crystal microcavities," Opt. Lett. 37, 3690-3692 (2012)