Several recent experiments identify unusual patterns in particle diffusion, hinting at some underlying complexity in the process which physicists have yet to discover. Through new analysis published ...

Here D 0 is the unrestricted diffusion coefficient. The condition (1) means that, at each point r m of the membrane, the density ψ of random walkers experiences a jump proportional to the component of ...

Imperfections in the regular atomic arrangements in crystals determine many of the properties of a material, and their diffusion is behind many microstructural changes in solids. However, imaging ...

Anomalous diffusion refers to transport phenomena in which the mean squared displacement of particles deviates from the linear time dependence characteristic of classical Brownian motion. In complex ...