Abstract
We show that there are two regimes of irreversible, kinetic aggregation of aqueous colloids, determined by the short-range interparticle potential, through its control of the sticking probability upon approach of two particles. Each regime has different rate-limiting physics, aggregation dynamics, and cluster-mass distributions, and results in clusters with different fractal dimensions. These results set limits on the fractal dimension, , for gold aggregates of (±0.05).
- Received 26 November 1984
DOI:https://doi.org/10.1103/PhysRevLett.54.1416
©1985 American Physical Society