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Single-file diffusion in a multilayered channel

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2018

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Physical Review E. 2018, 98(3), 032127. ISSN 2470-0045. eISSN 2470-0053. Available under: doi: 10.1103/PhysRevE.98.032127

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We demonstrate that strongly repelling Brownian particles confined in two-dimensional microchannels with multiple layers show single-file diffusion. At long times the mean-square displacement (MSD) is proportional to t1/2, as in the one-dimensional case. On an intermediate timescale the MSD is further reduced. It scales with a minimal exponent that decreases with the number of layers in the channel. In the limit of infinite width of the channel, the MSD time evolution shows a crossover to a logarithmic time dependence.

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ISO 690SIEMS, Ullrich, Peter NIELABA, 2018. Single-file diffusion in a multilayered channel. In: Physical Review E. 2018, 98(3), 032127. ISSN 2470-0045. eISSN 2470-0053. Available under: doi: 10.1103/PhysRevE.98.032127
BibTex
@article{Siems2018-09-21Singl-43428,
  year={2018},
  doi={10.1103/PhysRevE.98.032127},
  title={Single-file diffusion in a multilayered channel},
  number={3},
  volume={98},
  issn={2470-0045},
  journal={Physical Review E},
  author={Siems, Ullrich and Nielaba, Peter},
  note={Article Number: 032127}
}
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    <dcterms:abstract xml:lang="eng">We demonstrate that strongly repelling Brownian particles confined in two-dimensional microchannels with multiple layers show single-file diffusion. At long times the mean-square displacement (MSD) is proportional to t&lt;sup&gt;1/2&lt;/sup&gt;, as in the one-dimensional case. On an intermediate timescale the MSD is further reduced. It scales with a minimal exponent that decreases with the number of layers in the channel. In the limit of infinite width of the channel, the MSD time evolution shows a crossover to a logarithmic time dependence.</dcterms:abstract>
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