A theoretical substantiation for the rotational electrokinetic phenomenon in conducting media

The rotation of axisymmetric bodies in a constant electric field can occur under two conditions: the mechanical instability of the induced dipole mome nt and its slow formation. Tn the case of the Maxwell-Wagner polarization, both conditions are only fulfilled for a medium with a very low conductivit y, provided that the relaxation rate of the rotating particle is lower than that for the medium. It was shown that the conditions for rotation can be fulfilled for charged, ideally polarized conducting particles and ion-excha nger particles in media with a relatively high conductivity, in particular, even in the aqueous medium. Low polarization relaxation rates in such syst ems are determined by the charging of the high-capacitance surface or by a change in the concentration of charge carriers beyond the electrical double layer.