title: Electric and magnetic field-assisted orientational transitions in the ensembles of domains in a nematic liquid crystal on the polymer surface.
abstract: Using electro- and magneto-optical techniques, we investigated orientational transitions in the ensembles of domains in a nematic liquid crystal on the polycarbonate film surface under the conditions of competing surface forces that favor radial and uniform planar alignment of nematic molecules. Having analyzed field dependences of the intensity of light passed through a sample, we established the threshold character of the orientational effects, plotted the calculated intensity versus magnetic coherence length, and compared the latter with the equilibrium length that characterizes the balance of forces on the polymer surface.
authors.affiliation: Kirensky Institute of Physics, Krasnoyarsk Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia. parshin@iph.krasn.ru.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Parshin
authors.affiliation: Kirensky Institute of Physics, Krasnoyarsk Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia. gun@iph.krasn.ru.
authors.forename: Vladimir A
authors.initials: VA
authors.lastname: Gunyakov
authors.affiliation: Kirensky Institute of Physics, Krasnoyarsk Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia. zyr@iph.krasn.ru.
authors.forename: Victor Y
authors.initials: VY
authors.lastname: Zyryanov
authors.affiliation: Kirensky Institute of Physics, Krasnoyarsk Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia. dir@iph.krasn.ru.
authors.forename: Vasily F
authors.initials: VF
authors.lastname: Shabanov
mesh_terms: D004560:Electricity; D008027:Light; D050866:Liquid Crystals / Q000737:chemistry*; D060526:Magnetic Fields; D011076:Polycarboxylate Cement / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D011076:Polycarboxylate Cement; D011108:Polymers; C005506:polycarbonate