Phys. Rev. E 70, 021102 (2004) - Brownian rectifiers in the presence of temporally asymmetric unbiased forces

Brownian rectifiers in the presence of temporally asymmetric unbiased forces

Raishma Krishnan, Mangal C. Mahato, and A. M. Jayannavar

Phys. Rev. E 70, 021102 – Published 17 August 2004

Abstract

The efficiency of energy transduction in a temporally asymmetric rocked ratchet is studied. Time asymmetry favors current in one direction and suppresses it in the opposite direction due to which large efficiency $\sim 50 %$ is readily obtained. The spatial asymmetry in the potential together with system inhomogeneity may help in further enhancing the efficiency. Fine tuning of system parameters considered leads to multiple current reversals even in the adiabatic regime.

Received 13 January 2004

DOI:https://doi.org/10.1103/PhysRevE.70.021102

©2004 American Physical Society

Authors & Affiliations

Raishma Krishnan^1,*, Mangal C. Mahato^2,†, and A. M. Jayannavar^3,‡

¹Institute of Physics, Sachivalaya Marg, Bhubaneswar-751005, India
²Department of Physics, North-Eastern Hill University, Shilong 793022, India
³Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India

^*Electronic address: raishma@iopb.res.in
^†Electronic address: mangal@nehu.ac.in
^‡Electronic address: jayan@iopb.res.in

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Issue

Vol. 70, Iss. 2 — August 2004

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