https://doi.org/10.1140/epjb/e2015-60032-7
Regular Article
Current control in inertial Brownian motors by noise recycling
1
Department of Physics, Yuxi Normal University,
Yuxi
653100, P.R.
China
2
Department of Computer Science, Puer University,
Puer
665000, P.R.
China
3
Department of Physics, Yunnan University,
Kunming
650091, P.R.
China
a
e-mail: charlie@yxnu.net
Received: 12 January 2015
Received in final form: 25 January 2015
Published online: 11 March 2015
The transport properties of an inertial Brownian motor were numerically studied in the presence of recycled noise, which is obtained by re-injecting a fraction of the primary white noise after a processing time, being introduced into the system in a multiplicative way. The simulation results indicate that various parameters such as the external driving force, the friction coefficient, the mass of the particle, the recycling strength, and the delay time can induce the current reversal phenomenon when the sign of the recycling strength is in agreement with the sign of the external bias force, otherwise the current reversal cannot be observed. Additionally, the asymptotic mean velocity as a function of the delay time of the recycled noise always shows a resonance-like behavior with the presence of a maximum current. These results demonstrate that the delay time and the recycling strength of the recycled noise can be used as the feasible and flexible control parameters for the amplitude and direction of the current.
Key words: Statistical and Nonlinear Physics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2015