SEARCH Articles Figures Tables Concentration gradient Diffusion of Interstitial Particles in a Chemical Concentration Gradient Effect of Concentration Gradients Generation of Concentration and Temperature Gradients Gradient of pressure or concentration Mass and Charge Transport in the Presence of Concentration Gradients Migration in the Absence of Concentration Gradients Occurrence of Regions with Temperature and Concentration Gradients (TCG) The Problem of Nucleation in a Concentration Gradient Field Types of concentration gradient