%0 Journal Article %T Geometric Stochastic Resonance %A Pulak Kumar Ghosh %A Fabio Marchesoni %A Sergey E. Savel'ev %A Franco Nori %J Physics %D 2012 %I arXiv %R 10.1103/PhysRevLett.104.020601 %X 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. %U http://arxiv.org/abs/1206.1723v1