Signal mixing in a ratchet device: commensurability and current control |
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| Authors: | Sergey?Savel’ev Fabio?Marchesoni Peter?H?nggi Email author" target="_blank">Franco?NoriEmail author |
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| Institution: | (1) The Institute of Physical and Chemical Research (RIKEN), Frontier Research System, 351-0198 Wako-shi, Saitama, Japan;(2) Dipartimento di Fisica, Universitá di Camerino, 62032 Camerino, Italy;(3) Institute of Physics, University of Augsburg, Universitätsstrasse 1, 86135 Augsburg, Germany;(4) Center for Theoretical Physics, Department of Physics, University of Michigan, MI 48109-1120 Ann Arbor, USA |
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| Abstract: | Rectification current in overdamped ratchets can be easily controlled by applying two driving signals and tuning either their relative phase or their frequency ratio. The interplay of the two inputs generates intriguing transport mechanisms that can be implemented to optimize shuttling and separation of particles in a variety of physical and technological applications.Received: 11 April 2004, Published online: 13 July 2004PACS:
05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion - 05.60.Cd Classical transport - 87.16.Uv Active transport processes; ion channels |
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