Ca. Laberge et S. Sandow, STABILITY OF A NONEQUILIBRIUM INTERFACE IN A DRIVEN PHASE-SEGREGATINGSYSTEM, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 57(1), 1998, pp. 47-53
We investigate the dynamics of a nonequilibrium interface between coex
isting phases in a system described by a Cahn-Hilliard equation with a
n additional driving term. By means of a matched asymptotic expansion,
we derive equations for the interface motion. A linear stability anal
ysis of these equations results in a condition for the stability of a
flat interface. We find that the stability properties of a flat interf
ace depend on the structure of the driving term in the original equati
on.