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Directed transport in deformable ratchets

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Abstract

Transport of overdamped Brownian particles in deformable potentials is investigated in the presence of asymmetrically unbiased fluctuations. It is found that the deformation of the potential can strongly affect the directed transport. For small noise strength, the current is not always monotonic function of deformable parameter. For large noise strength, there exists a value of deformable parameter at which the current takes its maximum. Therefore, it is possible to obtain the optimal transport by changing the deformation of the potential.

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Authors and Affiliations

  1. Laboratory of Quantum Information Technology, ICMP and SPTE, South China Normal University, 510006, Guangzhou, P.R. China

    X. Q. Huang, P. Deng, J. W. Xiong & B. Q. Ai

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  1. X. Q. Huang
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  2. P. Deng
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  3. J. W. Xiong
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  4. B. Q. Ai
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Correspondence to B. Q. Ai.

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Huang, X.Q., Deng, P., Xiong, J.W. et al. Directed transport in deformable ratchets. Eur. Phys. J. B 85, 162 (2012). https://doi.org/10.1140/epjb/e2012-20921-9

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  • DOI: https://doi.org/10.1140/epjb/e2012-20921-9

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