Diffusion of colloids in one-dimensional light channels

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2004
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Lutz, Christoph
Kollmann, Markus
Bechinger, Clemens
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Journal of Physics / Condensed Matter. 2004, 16(38), pp. S4075-S4083. Available under: doi: 10.1088/0953-8984/16/38/022
Zusammenfassung

Single-file diffusion (SFD), prevalent in many chemical and biological processes, refers to the one-dimensionalmotion of interacting particles in pores which are so narrow that the mutual passage of particles is excluded. Since the sequence of particles in such a situation remains unaffected over time t, this leads to strong deviations from normal diffusion, e.g. an increase of the particle mean-square-displacement as the square root of t. We present experimental results of the diffusive behaviour of colloidal particles in one-dimensional channels with varying particle density. The channels are realized by means of a scanning optical tweezers. Based on a new analytical approach (Kollmann 2003 Phys. Rev. Lett. 90 180602) for SFD, we can predict quantitatively the long-time, diffusive behaviour from the short time density fluctuations in our systems.

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ISO 690LUTZ, Christoph, Markus KOLLMANN, Paul LEIDERER, Clemens BECHINGER, 2004. Diffusion of colloids in one-dimensional light channels. In: Journal of Physics / Condensed Matter. 2004, 16(38), pp. S4075-S4083. Available under: doi: 10.1088/0953-8984/16/38/022
BibTex
@article{Lutz2004Diffu-9067,
  year={2004},
  doi={10.1088/0953-8984/16/38/022},
  title={Diffusion of colloids in one-dimensional light channels},
  number={38},
  volume={16},
  journal={Journal of Physics / Condensed Matter},
  pages={S4075--S4083},
  author={Lutz, Christoph and Kollmann, Markus and Leiderer, Paul and Bechinger, Clemens}
}
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