Single-file diffusion of colloids in one-dimensional channels |
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Authors: | Wei Bechinger Leiderer |
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Institution: | Faculty of Physics, University of Konstanz, Postfach M676, D-78457 Konstanz, Germany. |
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Abstract: | Single-file diffusion, prevalent in many processes, refers to the restricted motion of interacting particles in narrow micropores with the mutual passage excluded. A single-filing system was developed by confining colloidal spheres in one-dimensional circular channels of micrometer scale. Optical video microscopy study shows evidence that the particle self-diffusion is non-Fickian for long periods of time. In particular, the distribution of particle displacement is a Gaussian function. |
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