Abstract
We calculate the short-time translational and rotational self-diffusion coefficients for charge-stabilized binary colloidal suspensions where the density of one component is very dilute.The two-body and leading three-body contributions of hydrodynamic interaction (HI) to the diffusion tensor are taken into account.Due to both electrostatic interactions and HI, the self-diffusion coefficients depend on effective charge numbers,volumn fractions and sizes of two kinds of spheres, and the results can be explained by the effective hard sphere model.The influence of HI on charge-stabilized binary systems is less than that on hard-sphere binary systems.
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