Transport and fractionation in periodic potential-energy landscapes

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PhysRevE.70.031108.pdf (276.36 KB)

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https://journals.aps.org/pre/abstract/10.1103/PhysRevE.70.031108

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https://doi.org/10.1103/PhysRevE.70.031108
 http://hdl.handle.net/11603/29249

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UMBC Physics Department

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https://orcid.org/0000-0002-6370-8765

Date

2004-09-24

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journal articles
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Citation of Original Publication

Pelton, Matthew, Kosta Ladavac, and David G. Grier. “Transport and Fractionation in Periodic Potential-Energy Landscapes.” Physical Review E 70, no. 3 (September 24, 2004): 031108. https://doi.org/10.1103/PhysRevE.70.031108.

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©2004 American Physical Society

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Abstract

Objects driven through periodically modulated potential-energy landscapes in two dimensions can become locked in to symmetry-selected directions that are independent of the driving force’s orientation. We investigate this problem in the overdamped limit, and demonstrate that the crossover from free-flowing to locked-in transport can depend exponentially on an object’s size, with this exceptional selectivity emerging from the landscape's periodicity.