Nonconservative electric and magnetic optical forces on submicron dielectric particles

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.033825· OSTI ID:21541382

Gomez-Medina, Raquel; Nieto-Vesperinas, Manuel ^[1]; Saenz, Juan Jose ^[2]

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1. Instituto de Ciencia de Materiales de Madrid, Consejo Superior de Investigaciones Cientificas, Campus de Cantoblanco, Madrid E-28049 (Spain)
2. Departamento de Fisica de la Materia Condensada, Universidad Autonoma de Madrid, E-28049 Madrid (Spain)

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, we analyze force effects on submicron silicon spheres in the near infrared, proving that the results previously discussed for hypothetical magnetodielectric particles can be observed for these Si particles.

• OSTI ID: 21541382
• Journal Information: Physical Review. A, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevA.83.033825; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIELECTRIC MATERIALS
DIFFUSION
ELECTRIC FIELDS
INTERACTIONS
MAGNETIC FIELDS
OPTICAL PROPERTIES
PARTICLES
SILICON
TRAPPING
VORTICES
ELEMENTS
MATERIALS
PHYSICAL PROPERTIES
SEMIMETALS