SEARCH Articles Figures Tables Analysis of Diffusion Reactions in the Solid State Diffusion of Gases in Porous Solids and Capillaries Diffusion of Gases through Porous Solids Measurements of diffusion in porous solids Migration and Diffusion of Charge Carriers in Solids Origin of the diffusion in a solid Permeation of Vapours through, and Diffusion in, Organic.Solids Prediction of diffusion coefficients in gases, liquids, amorphous solids and plastic materials using an uniform model Role of Defects in Solid State Diffusion Mechanisms Solid-state diffusion of ions Types of Solid Diffusion