  Formation of monodispersed colloidal particles is a complex process: nuclei,
produced rapidly in a supersaturated solution, grow to nanosize primary
particles, which then aggregate (coagulate) to form much larger final colloids.
This paper reviews a kinetic model that explains the formation of dispersions
of narrow size distribution in such processes. Numerical simulations of the
kinetic equations, with experimental model parameter values, are reported. The
model was tested for a system involving formation of uniform spherical gold
particles. The calculated average size, the width of the particle size
distribution, and the time scale of the process, agreed semiquantitatively with
the experimental values.
