A drop of dye added to a glass of water undergoes ordinary diffusion. However, when placed on the surface of a foam, the dye spreads differently—diffusion becomes anomalous. An example of this is the ...

Thermodynamics sets constraints on the time window over which anomalous diffusion can occur—a finding that may be relevant to the study of diffusion-controlled cellular processes. Figure 1: Diffusion ...

Transdermal therapeutic systems (TTS) remain adhered to human skin for periods of up to seven days, during which water or vapor continuously diffuses from the skin into the pressure sensitive adhesive ...

Physicists at the University of Kaiserslautern in Germany have observed how individual atoms diffuse through a gas for the first time, and how individual collisions between particles affect diffusion.