T. Frisch et al., 2-DIMENSIONAL LANDAU-DE GENNES DYNAMICAL MODEL FOR THE UNWINDING TRANSITION OF A CHOLESTERIC LIQUID-CRYSTAL, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 48(6), 1993, pp. 180004199-180004202
In this Rapid Communication we derive a simple dynamical model for the
unwinding transition of a cholesteric liquid crystal. Our model descr
ibes not only the equilibrium but also the nonequilibrium features of
the transition. In particular, our model is in qualitative agreement w
ith the experimental observations of systems containing rotating spira
l waves, all of the same handedness.