title: A simpler expression for Henry's function describing the electrophoretic mobility of spherical colloids.
abstract: An approximate expression for Henry's function, describing the electrophoretic mobility of a spherical colloidal particle in the limit of low surface potentials, is developed through a physical analogy to a colloidal particle with a linearly slipping surface (i.e. satisfies the Navier slip condition). The resulting expression reproduces Henry's function with a relative error of no more than 0.1%. This approach is generalized for the electrophoretic mobility of a particle regardless of surface potential though necessary data for rigorous testing is lacking.
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19702, USA. jswan@udel.edu
authors.forename: James W
authors.initials: JW
authors.lastname: Swan
authors.forename: Eric M
authors.initials: EM
authors.lastname: Furst