Arzola Alejandro V, Volke-Sepúlveda Karen, Mateos José L
Institute of Scientific Instruments of the ASCR, v.v.i., Academy of Sciences of the Czech Republic, Královopolská 147, 612 64 Brno, Czech Republic.
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 Jun;87(6):062910. doi: 10.1103/PhysRevE.87.062910. Epub 2013 Jun 17.
A thorough analysis of the dynamics in a deterministic optical rocking ratchet [introduced in 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.
本文对确定性光学摇摆棘轮（由A. V. Arzola等人在《物理评论快报》106, 168104 (2011)中提出）中的动力学进行了全面分析，并与实验结果进行了比较。所研究的系统由一个与周期性非对称光模式相互作用的微观粒子组成，该光模式通过无偏时间周期外力驱动远离平衡态。结果表明，有效光学势的不对称性取决于粒子相对于空间周期的相对大小，并将此作为粒子分级的有效机制进行了分析。详细讨论了在确定性区域中获得电流反转的必要条件。
