The effect of colloidal interactions on the structure of aggregates formed by irreversible diffusion-controlled aggregation is studied by Brownian dynamics simulation. Three-dimensional systems of spherical particles with Derjaguin-Landau-Verwey-Overbeek (DLVO) pair potentials are simulated at various volume fractions. We find that the form of DLVO potential affects short-range structure as measured by the particle-particle correlation function, but not long-range structure as measured by the fractal dimension.

• Received 6 November 1986

DOI:https://doi.org/10.1103/PhysRevA.35.2349