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Entropic rectification and current inversion in a pulsating channel Carusela, M. Florencia Rubí Capaceti, José Miguel Partícules (Matèria) Equació de la calor Particles Heat equation We show the existence of a resonant behavior of the current of Brownian particles confined in a pulsating channel. The interplay between the periodic oscillations of the shape of the channel and a force applied along its axis leads to an increase of the particle current as a function of the diffusion coefficient. A regime of current inversion is also observed for particular values of the oscillation frequency and the applied force. The model proposed is based on the Fick-Jacobs equation in which the entropic barrier and the effective diffusion coefficient depend on time. The phenomenon observed could be used to optimize transport in microfluidic devices or biological channels. 2018-07-04T13:50:42Z 2018-07-04T13:50:42Z 2017-05-08 2018-07-04T13:50:42Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0021-9606 https://hdl.handle.net/2445/123361 675819 eng Reproducció del document publicat a: https://doi.org/10.1063/1.4982884 Journal of Chemical Physics, 2017, vol. 146, num. 18, p. 184901-1-184901-7 https://doi.org/10.1063/1.4982884 (c) American Institute of Physics , 2017 info:eu-repo/semantics/openAccess 1 p. application/pdf American Institute of Physics Articles publicats en revistes (Física de la Matèria Condensada)