The Dynamics of the Formation of a Periodic Deformation in a Lyotropic Liquid Crystal

Abstract

Magnetic field induced reorientation of a nematic liquid crystal can be accompanied by a transient periodic deformation pattern. The dynamics of the formation and decay of this deformation are studied in the lyotropic nematic phase of disodium cromoglycate (DSCG) in water utilizing computer-assisted imaging techniques. The early time behavior is well-described by linearized nemato-hydrodynamic equations, while the long time behavior shows a rich variety of structures.