Summary
Ratchets are anisotropic periodic potentials. Particles subject to ratchet forces and simultaneously to thermal and nonthermal fluctuations can rectify the nonequilibrium noise, thereby extracting energy from incoherent and otherwise symmetric random forces. In this paper I describe some simple models which illustrate this phenomenon, highlighting two particular mechanisms leading to fluctuation-induced current.
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A selection of references published within the last year, listed roughly in order of their appearances, is:Magnasco M.,Phys. Rev. Lett.,71 (1993) 1477;Maddox J.,Nature,365 (1993) 203;Millonas M. andDykman M.,Phys. Lett. A,185 (1994) 65;Peskin C., Ermentrout G. andOster G., inMechanics and Cellular Engineering, edited byV. Mow et al. (Springer) 1994;Astumian R. D. andBier M.,Phys. Rev. Lett.,72 (1994) 1766;Maddox J.,Nature,368 (1994) 287;Prost J., Chawin J.-F., Peliti L. andAjdari A.,Phys. Rev. Lett.,72 (1994) 2652;Magnasco M.,Phys. Rev. Lett.,72 (1994) 2656;Doering C., Horsthemke W. andRiordan J.,Phys. Rev. Lett.,72 (1994) 2984;Maddox J.,Nature,369 (1994) 181.
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Address after July 1, 1994: Center for Nonlinear Studies, MS-B258, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
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Doering, C.R. Randomly rattled ratchets. Il Nuovo Cimento D 17, 685–697 (1995). https://doi.org/10.1007/BF02451826
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DOI: https://doi.org/10.1007/BF02451826