Efficiency of energy transformation in an underdamped diffusion ratchet

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The transport of an underdamped Brownian particle moving in a one-dimensional ratchet driven by a modulated Gaussian white noise is considered. The system experiences periodically higher temperature T1during a time τ1and lower temperature T2during a time τ2. Both the average current and the thermal efficiency are calculated numerically. The results show that the efficiency of energy transformation can be optimized for a ratio of τ1/τ2less than 1 at a critical damping. (C) 2000 Published by Elsevier Science B.V.




Bao, J. D. (2000). Efficiency of energy transformation in an underdamped diffusion ratchet. Physics Letters, Section A: General, Atomic and Solid State Physics, 267(2–3), 122–126. https://doi.org/10.1016/S0375-9601(00)00074-8

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