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Nonconservative electric and magnetic optical forces on submicron dielectric particles
Physical Review A. Atomic, Molecular, and Optical Physics
We present a study of the total force on a small lossless dielectric particle, which presents both an electric and magnetic response, in a optical vortex wave field. We show that the force is a simple combination of conservative and nonconservative steady forces that can rectify the flow of magnetodielectric particles. In a vortex lattice the electric-magnetic dipolar interaction can spin the particles either in or out of the whirl sites leading to trapping or diffusion. Specifically, wedoi:10.1103/physreva.83.033825 fatcat:pclv256yjrgjfeglpgb3l26ezy