Nie Wenjie, Liao Qinghong, He Jizhou
School of Computer, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, People's Republic of China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2010 Oct;82(4 Pt 1):041130. doi: 10.1103/PhysRevE.82.041130. Epub 2010 Oct 28.
We study a Feynman-like thermal Brownian motor, in which the asymmetric corrugated cylinder as the ratchet is coupled with a corrugated plate by the noncontact Casimir interaction between them. The source of driving of the system is the thermal fluctuations and its dynamic evolution is described by a set of Langevin equations. Further, the mean velocity and thermal efficiency of the motor in the overdamped limit are studied in detail as a function of the temperature of the baths, external load applied, magnitude of the Casimir interaction, and other relevant parameters by the numerical stimulation. The transport properties attained here and the essential roles of the Casimir interaction can be explicitly demonstrated by designing a Casimir Brownian motor with present nanotechnology.
我们研究了一种类费曼热布朗马达，其中作为棘轮的不对称波纹圆柱体通过它们之间的非接触卡西米尔相互作用与波纹板耦合。该系统的驱动源是热涨落，其动态演化由一组朗之万方程描述。此外，通过数值模拟详细研究了在过阻尼极限下马达的平均速度和热效率与浴温、施加的外部负载、卡西米尔相互作用的大小以及其他相关参数的函数关系。通过利用当前的纳米技术设计一个卡西米尔布朗马达，可以明确展示这里所获得的输运特性以及卡西米尔相互作用的重要作用。
