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  • Title: Efficiency and current in a correlated ratchet.
    Author: Ai BQ, Liu GT, Xie HZ, Wen DH, Wang XJ, Chen W, Liu LG.
    Journal: Chaos; 2004 Dec; 14(4):957-62. PubMed ID: 15568907.
    Abstract:
    We present a detailed study of the transport and the efficiency of a ratchet system in a periodic potential in the presence of correlated noises. The current and the efficiency of the system are investigated. It is found that, when the potential is spatially symmetric, the correlation between the two noises can induce a net transport. The efficiency shows many interesting features as a function of the applied force, the noise intensity, the external load, etc. The efficiency can be maximized as a function of noise intensity (or temperature), which shows that the thermal fluctuation can facilitate the efficiency of energy transformation.
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