title: Colloid electrophoresis for strong and weak ion diffusivity.
abstract: We study the electrophoretic flow of suspensions of charged colloids with a mesoscopic method that allows us to model generic experimental conditions. We show that for highly charged colloids their electrophoretic mobility increases significantly and displays a mobility maximum on increasing the colloidal charge for all salt concentrations. The electrophoretic mobility of highly charged colloids is also enhanced significantly when ion advection is dominant, leading to a strong heterogeneity in the local electrophoretic response especially at low-salt concentration, when ion diffuse layers overlap.
authors.affiliation: Departament de Fisica Fonamental, Universitat de Barcelona, Barcelona, Spain. giupponi@ffn.ub.es
authors.forename: Giovanni
authors.initials: G
authors.lastname: Giupponi
authors.forename: Ignacio
authors.initials: I
authors.lastname: Pagonabarraga