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APS » Journals » Phys. Rev. E » Volume 61 » Issue 6
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Phys. Rev. E 61, 7184–7187 (2000)

Nonlinearly coupled flows

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Martin Bier1, Marcin Kostur2,3, Imre Derényi1, and R. Dean Astumian1
1Department of Biochemistry and Molecular Biology and Department of Surgery, MC6035, University of Chicago, 5841 South Maryland Avenue, Chicago, Illinois 60637
2Institute of Physics, Humboldt University at Berlin, Invalidenstrasse 110, 10115 Berlin, Germany
3Institute of Physics, Silesian University, ulica Bankowa 14, 40-007 Katowice, Poland

Received 16 November 1999; published in the issue dated June 2000

We study energy flows that are coupled at a higher than linear order. A number of examples are presented where a force brings about a flow in the perpendicular direction. In some cases the symmetry of the system is such that coupling can only take place at even orders. We apply the theory to recently proposed two-dimensional devices that separate colloidal particles by ratcheting the different particles in different directions.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.61.7184
DOI:
10.1103/PhysRevE.61.7184
PACS:
05.40.-a, 02.50.Ey, 82.20.-w
 
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