Geometric Stochastic Resonance
Geometric Stochastic Resonance
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DOI：
10.1103/physrevlett.104.020601
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发表时间：
2010-01-15
影响因子：
8.6
通讯作者：
Nori, Franco
中科院分区：
文献类型：
--
作者：
Ghosh, Pulak Kumar;Marchesoni, Fabio;Nori, Franco
在振荡力作用下，布朗粒子在多孔膜上的运动表现出随机共振，其性质强烈地依赖于膜两侧的限制腔的几何形状。这种随机共振的表现既不需要能量障碍，也不需要熵障碍，因此可以被视为一种纯粹的几何效应。这种效应的大小对腔和孔的几何形状都很敏感，因此导致了独特的最佳同步条件。
A Brownian particle moving across a porous membrane subject to an oscillating force exhibits stochastic resonance with properties which strongly depend on the geometry of the confining cavities on the two sides of the membrane. Such a manifestation of stochastic resonance requires neither energetic nor entropic barriers, and can thus be regarded as a purely geometric effect. The magnitude of this effect is sensitive to the geometry of both the cavities and the pores, thus leading to distinctive optimal synchronization conditions.