Chinese Science Bulletin

, Volume 44, Issue 21, pp 1956–1961 | Cite as

Brownian ratchets driven by flashing noise strengt

  • Tongjun Zhao
  • Yong Zhan
  • Yizhong Zhuo
  • Xizhen Wu


The stochastic transport driven by flashing multi-noise sources in a ratchet is studied. The stationary current versus the noise strength and the colored noise correlated time r is obtained. At a fixed flip rate and strength of the colored noises, the novel phenomenon of the current reversal occurs as τ reaches a certain value. More than one reversal point exists when a flashing colored noise source and a flashing bdIite noise source are simultaneously taken into account.


flashing force ratchet current reversal Langevian equation 


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Copyright information

© Science in China Press 1999

Authors and Affiliations

  • Tongjun Zhao
    • 1
  • Yong Zhan
    • 1
  • Yizhong Zhuo
    • 2
    • 3
  • Xizhen Wu
    • 2
  1. 1.Department of Applied Mathematics and PhysicsHebei University of TechnologyTianjinChina
  2. 2.China Institute of Atomic EnergyBeijingChina
  3. 3.Institute of Theoretical PhysicsChinese Academy of SciencesBeijingChina

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