Growth law dynamics in a phase separating fluid

From a molecular dynamics experiment of an unstable two-dimensional fluid undergoing phase separation, we observe two principal growth regimes; (1) spinodal decomposition with a wavelike morphology followed by (2) a transition to cluster formation and growth due to atomic condensation and cluster coagulation. In the second regime the growth law is t12. This dependence arises from the isothermal growth law for vapor accretion on two-dimensional clusters in a ‘onerd component supersaturated vapor. The details of theoretical analysi that leads to t12 growth law are presented.