2012/06/08 by Pulak Kumar Ghosh, Fabio Marchesoni, Sergey E. Savel'ev +1 · 1 citation
Physics and Astronomy · #cond-mat.soft #cond-mat.stat-mech #physics.chem-ph
paper · pdf · doi:10.1103/physrevlett.104.020601
published as Phys. Rev. Lett 104, 020601 (2010)
arxiv created 2012/06/08 · arxiv updated 2015/06/05
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.