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