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Enhanced structural correlations accelerate diffusion in charge-stabilized colloidal suspensions

E. Overbeck·Ch. Sinn·M. Watzlawek
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Abstract

Theoretical calculations for colloidal charge-stabilized and hard sphere suspensions show that hydrodynamic interactions yield a qualitatively different particle concentration dependence of the short-time self-diffusion coefficient. The effect, however, is numerically small and hardly accessible by conventional light scattering experiments. Applying multiple-scattering decorrelation equipment and a careful data analysis we show that the theoretical prediction for charged particles is in agreement with our experimental results from aqueous polystyrene latex suspensions.

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E. Overbeck, Ch. Sinn, M. Watzlawek. 1999-04-28. Enhanced structural correlations accelerate diffusion in charge-stabilized colloidal suspensions. https://doi.org/10.1103/physreve.60.1936

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