Brownian motors
Brownian motors
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DOI：
10.1002/andp.200410121
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发表时间：
2004-10
影响因子：
2.4
通讯作者：
P. Hänggi;F. Marchesoni;F. Nori
中科院分区：
文献类型：
--
作者：
P. Hänggi;F. Marchesoni;F. Nori
在具有空间或动力学对称性破缺的系统中，热布朗运动与无偏的非平衡噪声相结合，产生了一种机会通道，可用于在微观甚至纳米尺度上控制系统。这个主题被称为“布朗马达”概念。布朗运动（通常是过阻尼的）的建设性作用被举例说明为各种设置中的噪声诱导的粒子传输。我们首先介绍了工作原理和特性的原理证明设备，扩散温度布朗电机。接下来，我们考虑基于信号混合现象的最新应用。后者是特别简单的实验实现，以优化和选择性地控制各种各样的定向传输行为。的微妙之处，也有潜力的布朗电机在量子制度的运作和一些国家的最先进的应用，连同未来的道路，提出。
In systems possessing a spatial or dynamical symmetry breaking, thermal Brownian motion combined with unbiased, non‐equilibrium noise gives rise to a channelling of chance that can be used to exercise control over systems at the micro‐ and even on the nano‐scale. This theme is known as the “Brownian motor” concept. The constructive role of (the generally overdamped) Brownian motion is exemplified for a noise‐induced transport of particles within various set‐ups. We first present the working principles and characteristics with a proof‐of‐principle device, a diffusive temperature Brownian motor. Next, we consider very recent applications based on the phenomenon of signal mixing. The latter is particularly simple to implement experimentally in order to optimize and selectively control a rich variety of directed transport behaviors. The subtleties and also the potential for Brownian motors operating in the quantum regime are outlined and some state‐of‐the‐art applications, together with future roadways, are presented.