A feedback-controlled Brownian ratchet operated by a temperature switch

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...

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Bibliographic Details
Published in:Chinese physics B 2012-07, Vol.21 (7), p.599-603
Main Author: 张红卫 文书堂 张海涛 李玉晓 陈改荣
Format: Article
Language:English
Subjects:
Asymmetry
Control systems
Control theory
Exact solutions
Feedback
Mathematical analysis
Mathematical models
Motors
Potential fields
不对称性
参数变化
反馈控制
布朗运动
开关操作
棘轮
温度
解析表达式
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Summary: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.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/7/078701