Aggregation in colloids and aerosols
aggregation behavior of dispersed colloidal and aerosol particles in a number of different
environments from the continuum to the free-molecular. The goal of this research has
been to provide a bridge between experimental and theoretical researchers in this field by
simulating the aggregation process within a known model. To this end, a variety of interparticle
interactions has been studied in the course of this research, focusing on the effect
of these interactions on the aggregation mechanism and resulting aggregate structures.
Both Monte Carlo and Brownian Dynamics codes have been used to achieve this goal.
The morphologies of clusters that result from aggregation events in these systems have
been thoroughly analyzed with a range of diverse techniques, and excellent agreement
has been found with other researchers in this field. Morphologies of these clusters
include fractal, gel, and crystalline forms, sometimes within the same structure at
different length scales. This research has contributed to the fundamental understanding of
aggregation rates and size distributions in many physical system, having allowed for the
development of improved models of the aggregation and gelation process. Systems
studied include DLCA and BLCA in two and three dimension, free-molecular diffusional
(Epstein) system, selective aggregation in binary colloids, ssDNA mediated aggregation
in colloidal systems, and several others.
School:Kansas State University
School Location:USA - Kansas
Source Type:Master's Thesis
Keywords:colloids aerosols physics diffusion ballistic aggregation condensed matter 0611
Date of Publication:01/01/2007