Aggregation in a colloidal system composed of positive and negative particles is studied by simulations and theoretically. The system is comprised of a 50/50 mixture of particles with the same size and opposite charge. Brownian dynamics simulations are performed, varying the range of interaction...

We use dynamic light scattering to measure the dynamic structure factor of density fluctuations occurring in colloidal suspensions that have attained a quiscent state long after aggregation. We find a stretched-exponential decay to a finite plateau. Our interpretation of the arrested decay is...

The aggregation of polymer colloids is studied in processes induced at high ionic concentration. Cluster-size distributions are measured with a single-cluster light scattering instrument constructed by our team. A brief description of the instrument is given and its proper performance is...