Diffusion in Jammed Particle Packs.

@article{Bolintineanu2015DiffusionIJ,
  title={Diffusion in Jammed Particle Packs.},
  author={Dan S. Bolintineanu and Gary S. Grest and Jeremy B. Lechman and Leonardo E. Silbert},
  journal={Physical review letters},
  year={2015},
  volume={115 8},
  pages={
          088002
        }
}
Using random walk simulations we explore diffusive transport through monodisperse sphere packings over a range of packing fractions ϕ in the vicinity of the jamming transition at ϕ(c). Various diffusion properties are computed over several orders of magnitude in both time and packing pressure. Two well-separated regimes of normal "Fickian" diffusion, where the mean squared displacement is linear in time, are observed. The first corresponds to diffusion inside individual spheres, while the… Expand
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