title: Kinetics of director gliding on a polymer-liquid-crystal interface.
abstract: Magnetic-field-induced surface reorientation of nematic liquid crystals on polyethyl-methacrylate films is studied. The experiments indicate that the time scale of director gliding expands from a fraction of a second to several hours. A power-law distribution function of relaxation times provides very good agreement between measurements and calculated gliding curves. From the model an upper limit of the extrapolation length can be extracted, which points to a surprisingly strong equilibrium azimuthal anchoring of the liquid crystal on the polymer layer.
authors.affiliation: Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, PO Box 49, H-1525 Budapest, Hungary.
authors.forename: I
authors.initials: I
authors.lastname: Jánossy
mesh_terms: D003198:Computer Simulation; D007700:Kinetics; D050866:Liquid Crystals / Q000737:chemistry* / Q000528:radiation effects*; D008280:Magnetics; D008956:Models, Chemical; D019904:Polymethyl Methacrylate / Q000737:chemistry* / Q000528:radiation effects*; D013499:Surface Properties / Q000528:radiation effects
chemical_list: D019904:Polymethyl Methacrylate