A feedback-controlled Brownian ratchet operated by a temperature switch |
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| Authors: | Zhang Hong-Wei Wen Shu-Tang Zhang Hai-Tao Li Yu-Xiao and Chen Gai-Rong |
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| Institution: | [1]School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China [2]Department of Physics, Zhengzhou Normal University, Zhengzhou 450044, China [3]School of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China |
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| Abstract: | In this paper, we present a model of the Brownian motor in a feedback controlled ratchet, in which the application of the flashing potential depends on the state of the particle to be controlled. We derive an analytical expression for the velocity induced by the feedback ratchet, which is a function of several parameters, including the ratio of the two switching temperatures and the asymmetry parameter of the potential field. The motor shows a current inversion when either parameter is varied. |
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| Keywords: | feedback temperature switch asymmetry parameter |
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