Brownian pump with an unbiased external force

• Authors: Yang Liu , Bao-quan Ai
• Languages of publication: EN

Abstracts

EN

We investigate Brownian pump transport in the presence of an unbiased external force. The pumping system is embedded in a finite region bounded by two particle reservoirs. In the adiabatic limit, we obtain the analytical expressions of the current and the concentration ratio. We find that Brownian particles can be pumped through an asymmetric potential from a particle reservoir at low concentration to one at the same or higher concentration in the presence of an unbiased external force.

Keywords

EN

brownian pump; current; concentration ratio

Discipline

• 02.50.Ey: Stochastic processes
• 05.60.-k: Transport processes
• 05.60.Cd: Classical transport

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2009
• Volume: 7
• Issue: 3
• Pages: 614-619

Dates

published

1 - 9 - 2009

online

25 - 6 - 2009

Contributors

author

Yang Liu

• Institute for Condensed Matter Physics, School of Physics and Telecommunication Engineering, South China Normal University, 510006, Guangzhou, China

author

Bao-quan Ai

• Institute for Condensed Matter Physics, School of Physics and Telecommunication Engineering, South China Normal University, 510006, Guangzhou, China

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Identifiers

DOI

10.2478/s11534-009-0005-0