Single-File Diffusion of Colloids in One-Dimensional Channels
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Open Access
- 28 January 2000
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 287 (5453) , 625-627
- https://doi.org/10.1126/science.287.5453.625
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.Keywords
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