Hydrodynamics of electrophoretic motion in an alternating electric field. (English) Zbl 0765.76097

Summary: Electrophoresis in an alternating electric field is the basis for electroacoustical measurements. These measurements provide new means of investigating the electrokinetic properties of colloidal systems. In order to relate electroacoustical signals to the charge and the size of colloidal particles, an expression is required for the dynamic electrophoretic mobility of colloidal particles in a continuous fluid. An exact analytical solution to the problem is given for an arbitrary ratio between the particle radius and the electric double-layer thickness, in the case where the electrokinetic potential of the uniformly charged particle is small and unaffected by the alternating field.


76W05 Magnetohydrodynamics and electrohydrodynamics
76T99 Multiphase and multicomponent flows
Full Text: DOI


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