1087
Mesoscale Particle-Based Model of Colloidal Suspensions in Electric Fields

Thursday, 2 June 2016: 09:55
Aqua 307 (Hilton San Diego Bayfront)

ABSTRACT WITHDRAWN

We evaluate a particle-based model of colloidal suspensions that undergo electrophoretic motion[1] and deposition using an extensive set of mesoscale simulations that characterize experimentally relevant colloidal suspensions. We parameterize the model using only measurable quantities from suspensions that have properties of non-polar and aqueous solvents or ionic liquids with monodisperse polystyrene colloids between 1 nm - 1 μm in radius. The model accurately describes diffusive and electrophoretic motion of experimentally relevant colloidal suspensions. Furthermore, we extend the model to investigate electrophoretic deposition. The model is uniquely poised to elucidate how the deposit morphology depends on electric field strength, suspension properties, and colloid packing fraction because the model explicitly computes inter-particle interactions of colloidal suspensions.

[1] Giera, B.; Zepeda-Ruiz, L. A.; Pascall, A. J.; Kuntz, J. D.; Spadaccini, C. M.; Weisgraber, T. H. Mesoscale Particle-Based Model of Electrophoresis. Journal of the Electrochemical Society. The Electrochemical Society 2015, pp D3030–D3035.