Nonconservative electric and magnetic optical forces on submicron dielectric particles
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
American Physical SocietyDate
2011-03-23Citation
10.1103/PhysRevA.83.033825
Physics review A 83.3 (2011): 033825
ISSN
1050-2947 (print); 1094-1622 (online)DOI
10.1103/PhysRevA.83.033825Funded by
This work has been supported by the Spanish MEC through the Consolider NanoLight (CSD2007-00046) and FIS2006-11170-C01-C02 and FIS2009-13430-C01-C02 research grants. Work by R.G.-M. financed by the MICINN “Juan de la Cierva” GrantProject
Gobierno de España. CSD2007-00046; Gobierno de España. FIS2006-11170-C01-C02; Gobierno de España. FIS2009-13430-C01-C02Editor's Version
http://dx.doi.org/10.1103/PhysRevA.83.033825Subjects
FísicaRights
© 2011 American Physical SocietyAbstract
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
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Google Scholar:Gómez-Medina, Raquel
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Nieto-Vesperinas, Manuel
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Sáenz Gutiérrez, Juan José
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