HIGH-FREQUENCY ASYMPTOTIC-EXPANSION FOR THE ELECTROKINETIC PROPERTIESOF A SPHERICAL COLLOID PARTICLE WITH DYNAMIC STERN LAYER

The electrophoretic mobility of a isolated spherical colloid particle subject to an oscillating electric field is analyzed in the limit of h igh frequencies by the technique of matched asymptotic expansions, The effect of mobile Stern layer ions is also included in the analysis. T he resulting expressions can be used to compute the mobility and condu ctivity in the regime where direct numerical solutions encounter diffi culties. (C) 1996 Academic Press, Inc.