Adiabatically driven Brownian pumps

Viktor M Rozenbaum, Makhnovskii Yurii A, Irina V Shapochkina, Sheh-Yi Sheu, Dah-Yen Yang, Sheng Hsien Lin

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2 Scopus citations

Abstract

We investigate a Brownian pump which, being powered by a flashing ratchet mechanism, produces net particle transport through a membrane. The extension of the Parrondo's approach developed for reversible Brownian motors [Parrondo, Phys. Rev. E 57, 7297 (1998)] to adiabatically driven pumps is given. We demonstrate that the pumping mechanism becomes especially efficient when the time variation of the potential occurs adiabatically fast or adiabatically slow, in perfect analogy with adiabatically driven Brownian motors which exhibit high efficiency [Rozenbaum et al., Phys. Rev. E 85, 041116 (2012)]. At the same time, the efficiency of the pumping mechanism is shown to be less than that of Brownian motors due to fluctuations of the number of particles in the membrane.
Original languageEnglish
Article number012104
JournalPhysical Review E
DOIs
StatePublished - 8 Jun 2013

Keywords

  • GLYCEROL CONDUCTION; ENERGY TRANSDUCTION; TRANSPORT; MECHANISM; EFFICIENCY; DIFFUSION; RATCHETS; DYNAMICS; MOTORS

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