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Electrokinetic phenomena is a family of several different effects that occur in heterogeneous fluids or in porous bodies filled with fluid. The term heterogeneous here means a fluid containing particles. Particles can be solid, liquid or gas bubbles with sizes on the scale of a micrometer or nanometer.
Additional recommended knowledge
There is a common source of all these effects - Double Layer (interfacial). Influence of an external force on the diffuse layer generates tangential motion of a fluid with respect to an adjacent charged surface. This force might be electric, pressure gradient, concentration gradient, gravity. In addition, the moving phase might be either continuous fluid or dispersed phase.
Various combinations of the driving force and moving phase determine various electrokinetic effects. Following "Fundamentals of Interface and Colloid Science" by Lyklema, the complete family of electrokinetic phenomena includes:
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Electrokinetic_phenomena". A list of authors is available in Wikipedia.|