Journal
SCIENCE
Volume 287, Issue 5453, Pages 625-627Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.287.5453.625
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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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