Kinetic and Scaling properties in a Sedimentation Model

MARCOS F. CASTEZ; ROBERTO C. SALVAREZZA; HERNÁN G. SOLARI

La Serena, Chile

Conferencia; XIV Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics (Medyfinol 04); 2004

There are many technologically relevant processes in which particles driven by diffusion in a solution are aggregated to a substrate upon contact with it. We model the process and discuss different topics such as roughening development and aggregation rates with special consideration of the limiting processes: diffusion-controlled, aggregation-controlled and zero field. Scaling properties are investigated by means of extensive numerical simulations, and analytical expectations for aggregation rates are obtained by solving a related Smoluchowsky equation. Finally, the links of some of our results to previous models/experiments are discussed.