Publikation: Non-monotonic crossover from single-file to regular diffusion in micro-channels
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2012
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Schwierz, Nadine
Sengupta, Surajit
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Scientific Reports. 2012, 2, pp. 1015. eISSN 2045-2322. Available under: doi: 10.1038/srep01015
Zusammenfassung
The diffusion behavior of interacting particles determines the behavior of a large number of systems ranging from pedestrians crossing a road to ions passing through channels in living cells. Here we present a system in which the nature of the diffusion process varies with changes in the external conditions. We find this special behavior in a colloidal model system, consisting of micron sized particles which are confined to narrow channels and interact via induced magnetic dipoles. When the density of these particles is changed, diffusion alternates between normal Fickian behavior and single-file diffusion. This anomalous behavior is induced by the order of the particles in the restricted geometry and does not depend on the exact nature of the inter-particle interactions.
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Fachgebiet (DDC)
530 Physik
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Structure of solids and liquids, colloids, structure of solids and liquids, statistical physics, thermodynamics and nonlinear dynamics
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SIEMS, Ullrich, Christian KREUTER, Artur ERBE, Nadine SCHWIERZ, Surajit SENGUPTA, Paul LEIDERER, Peter NIELABA, 2012. Non-monotonic crossover from single-file to regular diffusion in micro-channels. In: Scientific Reports. 2012, 2, pp. 1015. eISSN 2045-2322. Available under: doi: 10.1038/srep01015BibTex
@article{Siems2012Nonmo-22764,
year={2012},
doi={10.1038/srep01015},
title={Non-monotonic crossover from single-file to regular diffusion in micro-channels},
volume={2},
journal={Scientific Reports},
author={Siems, Ullrich and Kreuter, Christian and Erbe, Artur and Schwierz, Nadine and Sengupta, Surajit and Leiderer, Paul and Nielaba, Peter},
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