Colloidal systems present significant challenges to molecular modeller
s, due to their size and complexity. Recent progress, however, in simu
lating colloidal aggregates, phases and interfaces is allowing much us
eful qualitative and quantitative information to be obtained concernin
g aggregate and interfacial structures at the molecular level, in addi
tion physical property data on interfacial tensions and friction coeff
icients with and without the presence of surfactants can now be calcul
ated.