Physical Review E Vol. 70

Gliding of liquid crystals on soft polymer surfaces


The gliding of nematic liquid crystals on polymer surfaces in the vicinity of the glass transition temperature of the polymer was investigated by conducting experiments on magnetic field induced rotation of the liquid crystals. A model that described the structural rearrangements in the polymer induced by its interaction with the anisotropic potential of the liquid crystal was developed. For determining different field strengths and temperatures, kinetic curves were presented. It was found that the surface viscosity for gliding was determined by the rate of rearrangement of the polymer chains, rather than by the surface friction of the liquid crystal.