Abstract
Particle–cluster aggregation on nonuniform substrates was investigated by Monte Carlo simulations. The nonuniform substrates are represented by percolations with occupied probability p. Elastic repulsive interactions between particles through the substrates have been involved. It was found, for uniform substrates ( p∼1), the aggregates change from diffusion-limited aggregates to thick net-like branched structures with the increase of repulsive interaction. As p decreases, the effect of repulsive interaction on aggregates lessens gradually. When p is close to the critical value p c , the cluster changes very little for variant repulsive interactions.
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