Dynamical analysis of an optical rocking ratchet: Theory and experiment

0397672 - ÚPT 2014 US eng J - Článek v odborném periodiku
Arzola, Alejandro V. - Volke-Sepúlveda, K. - Mateos, J.L.
Dynamical analysis of an optical rocking ratchet: Theory and experiment.
Physical Review E. Roč. 87, č. 6 (2013), 062910:1-9. ISSN 1539-3755
Grant CEP: GA MŠMT LH12018; GA MŠMT EE2.4.31.0016
Institucionální podpora: RVO:68081731
Klíčová slova: deterministic optical rocking ratchet * analysis of the dynamics
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 2.326, rok: 2013

A thorough analysis of the dynamics in a deterministic optical rocking ratchet [ A. V. Arzola et al. Phys. Rev. Lett. 106 168104 (2011)] and a comparison with experimental results are presented. The studied system consists of a microscopic particle interacting with a periodic and asymmetric light pattern, which is driven away from equilibrium by means of an unbiased time-periodic external force. It is shown that the asymmetry of the effective optical potential depends on the relative size of the particle with respect to the spatial period, and this is analyzed as an effective mechanism for particle fractionation. The necessary conditions to obtain current reversals in the deterministic regime are discussed in detail.
Trvalý link: http://hdl.handle.net/11104/0225326