Dimer currents on one dimensional asymmetric substrates

被引：1
|
作者：
Pototsky, Andrey [1 ]
Janson, Natalia B. [2 ]
Marchesoni, Fabio [1 ,3 ]
Savel'ev, Sergey E. [1 ]
机构：
[1] Univ Loughborough, Dept Phys, Loughborough LE11 3TU, Leics, England
[2] Univ Loughborough, Sch Math, Loughborough LE11 3TU, Leics, England
[3] Univ Camerino, Dipartimento Fis, I-62032 Camerino, Italy
来源：
CHEMICAL PHYSICS | 2010年 / 375卷 / 2-3期
基金：
英国工程与自然科学研究理事会;
关键词：
Noise; Transport processes; Adsorption kinetics; BROWNIAN MOTORS; THERMAL RATCHETS; TRANSPORT; DIFFUSION; PARTICLES; MEMBRANE; POLYMER; DRIVEN; MOTION; NOISE;
D O I：
10.1016/j.chemphys.2010.03.021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Transport on a one dimensional asymmetric substrate is studied for the case of short, soft charged dimers, formed by two equal masses carrying charges of opposite sign. The stationary dimer currents are computed as functions of the drive orientation and the dimer parameters. Optimal transport conditions are predicted to depend on the dimer elastic constant, in close agreement with the simulation data. Correspondingly, the rectification dimer currents sustained by low frequency ac drives reveal a rich phenomenology, also investigated in detail. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：458 / 463
页数：6
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