Anomalous yet Brownian.

@article{Wang2009AnomalousYB,
  title={Anomalous yet Brownian.},
  author={Bo Wang and Stephen M Anthony and Sung Chul Bae and Steve Granick},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2009},
  volume={106 36},
  pages={15160-4}
}
We describe experiments using single-particle tracking in which mean-square displacement is simply proportional to time (Fickian), yet the distribution of displacement probability is not Gaussian as should be expected of a classical random walk but, instead, is decidedly exponential for large displacements, the decay length of the exponential being proportional to the square root of time. The first example is when colloidal beads diffuse along linear phospholipid bilayer tubes whose radius is… CONTINUE READING

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