FIG. 6.
(a) Diffusion coefficient as a function of the salt concentration (Debye length, λD), soft particles charge, ν, and effective volume fraction, ϕE. The diffusion coefficient is normalized with the particle diffusion coefficient Da = kBT/6πηa. (b) Electrophoretic mobility, μ, as a function of the effective volume fraction and salt concentration for a weak (blue lines) and a strong (black lines) imposed fields, E0. (c) Electrophoretic mobility at zeroth concentration, μ0, as a function of the Debye length for the two applied fields in (b). The blue line represent Ohshima’s approximate solution for non-fluid-penetrated soft particles.67