Thermal ratchets with symmetric potentials

Ryo Kanada, Kazuo Sasaki

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


It is shown that the directed transport of Brownian particles can be induced by thermal ratchets with symmetric, two-state fluctuating potentials, contorary to an earlier belief that at least three slates are needed for the potential to fluctuate if the potential is symmetric. It is proved that the potential must lack the symmetry of glide reflection in order for the directed movement of particles to occur in a two-state ratchet. Based on this finding, several models with symmetric potentials are constructed to demonstrate the occurrence of the particle flow.

Original languageEnglish
Pages (from-to)3759-3762
Number of pages4
Journaljournal of the physical society of japan
Issue number12
Publication statusPublished - 1999 Jan 1


  • Glide reflection
  • Ratchet
  • Symmetric potentials
  • Two-state model

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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