Observation of flux reversal in a symmetric optical thermal ratchet.

We demonstrate that a cycle of three holographic optical trapping patterns can implement a thermal ratchet for diffusing colloidal spheres and that the ratchet-driven transport displays flux reversal as a function of the cycle frequency and the intertrap separation. Unlike previously described ratchet models, the approach we describe involves three equivalent states, each of which is locally and globally spatially symmetric, with spatiotemporal symmetry being broken by the sequence of states.

• Publication year

  2004

• Venue

  Physical Review Letters

• Publication date

  2004-11-29

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevLett.94.110601arXiv cond-mat/0411731PMID 15903837
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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