Electrokinetic phenomena

Electrokinetics is the study of the generation of electric current by moving dielectric and the electric fields caused by movement of non-conductors.

Electrokinetic phenomena occur at the interface between two phases when forms a double layer here. As emerging space charges lead external electric fields to move the fluids involved.

Electrokinetic phenomena are, for example:

• Electrophoresis, the migration of electrically charged particles by serving as a substrate material in an electric field
• Electroosmosis, movement of a fluid parallel to a surface by an electric field
• The reversal of electroosmosis: generation of electricity as it flows over a surface
• Generating an electrical current by moving particles in a liquid, such as sedimentation.
• Electrocapillarity, the surface tension of a liquid varies with electric charge

Since the electrokinetic phenomena emanate only from the interface, they can be observed with finely divided bodies and large surfaces, especially in fine-pored material in capillaries, in suspensions, colloids, and other combinations.

• Electrochemistry