Issue
EPL
Volume 86, Number 3, May 2009
Article Number 30002
Number of page(s) 6
Section General
DOI http://dx.doi.org/10.1209/0295-5075/86/30002
Published online 13 May 2009
EPL, 86 (2009) 30002
DOI: 10.1209/0295-5075/86/30002

Intrinsic ratchets

M. van den Broek1, R. Eichhorn2, 3 and C. Van den Broeck1

1   Hasselt University - B-3590 Diepenbeek, Belgium, EU
2   Fakultät für Physik, Universität Bielefeld - 33615 Bielefeld, Germany, EU
3   NORDITA - Roslagstullsbacken 23, SE-106 91 Stockholm, Sweden, EU

vandenbroek.martijn@gmail.com

received 9 October 2008; accepted in final form 8 April 2009; published May 2009
published online 13 May 2009

Abstract
We present analytic expressions for the drift behaviour of Brownian particles with intrinsic asymmetry in unbiased time-dependent force fields, derived from a generic formalism. Our findings are supported by molecular dynamics simulations.

PACS
05.40.-a - Fluctuation phenomena, random processes, noise, and Brownian motion.
05.70.Ln - Nonequilibrium and irreversible thermodynamics.
62.25.Fg - High-frequency properties, responses to resonant or transient (time-dependent) fields.

© EPLA 2009