6533b81ffe1ef96bd1277cc0
RESEARCH PRODUCT
Enhanced structural correlations accelerate diffusion in charge-stabilized colloidal suspensions
M. WatzlawekEkkehard OverbeckChristian Sinnsubject
Condensed Matter - Materials ScienceMaterials scienceAqueous solutionStatistical Mechanics (cond-mat.stat-mech)DiffusionMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesCharge (physics)Condensed Matter - Soft Condensed MatterPolystyrene latexCharged particleCondensed Matter::Soft Condensed MatterColloidChemical physicsYield (chemistry)Soft Condensed Matter (cond-mat.soft)ParticleStatistical physicsCondensed Matter - Statistical Mechanicsdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-04-28 | Physical Review E |