Numerical Analysis of Thermophoresis of a Charged Spheroidal Colloid in Aqueous Media.

ABSTRACT: Thermophoresis of charged colloids in aqueous media has wide applications in biology. Most existing studies of thermophoresis focused on spherical particles, but biological compounds are usually non-spherical. The present paper reports a numerical analysis of the thermophoresis of a charged spheroidal colloid in aqueous media. The model accounts for the strongly coupled temperature field, the flow field, the electric potential field, and the ion concentration field. Numerical simulations revealed that prolate spheroids move faster than spherical particles, and oblate spheroids move slower than spherical particles. For the arbitrary electric double layer (EDL) thickness, the thermodiffusion coefficient of prolate (oblate) spheroids increases (decreases) with the increasing particle's dimens

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC7926884 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature