Cooperative rectification in confined Brownian ratchets.

We analyze the rectified motion of a Brownian particle in a confined environment. We show the emergence of strong cooperativity between the inherent rectification of the ratchet mechanism and the entropic bias of the fluctuations caused by spatial confinement. Net particle transport may develop even in situations where separately the ratchet and the geometric restrictions do not give rise to particle motion. The combined rectification effects can lead to bidirectional transport depending on particle size, resulting in a different route for segregation. The reported mechanism can be used to control transport in mesostructures and nanodevices in which particles move in a reduced space.

• Publication year

  2012

• Venue

  Physical review. E, Statistical, nonlinear, and soft matter physics

• Publication date

  2012-01-10

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevE.85.010105arXiv 1201.2027PMID 22400501
• 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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