Liquid Crystals in Cylindrical Pores: Effects on Transition Temperatures and Singularities
- 1 October 1983
- journal article
- liquid crystals
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 100 (1-2) , 103-110
- https://doi.org/10.1080/00268948308073724
Abstract
Positive dielectric anisotropy liquid crystals are studied in cylindrical pores in a 10 μm thick polymer membrane of diameters 0.2-12μm. Transition temperature depressions increase with decreasing pore size. Singularities of strength 1 are observed in the center of the pores, accompanied by some strength ½ singularities. By applying a voltage across the membrane, the S = 1 singularities are shown to be “escaped” singularities. S = +½ singularities show a critical destruction at a characteristic voltage.Keywords
This publication has 11 references indexed in Scilit:
- Landau theory of wall-induced phase nucleation and pretransitional birefringence at the isotropic-nematic transitionPhysical Review A, 1981
- Surface Order Parameter of 4-n-Heptyl-4′-CyanobiphenylMolecular Crystals and Liquid Crystals, 1981
- Laser and Electric Field Induced Birefringence Studies on the Cyanobiphenyl HomologuesMolecular Crystals and Liquid Crystals, 1978
- Size and surface effects on phase transitionsChemical Physics Letters, 1976
- Phase Transition in Surface-Aligned Nematic FilmsPhysical Review Letters, 1976
- Elastic and Optical Properties of Some 4′-n-Alkyl-4-CyanobiphenylsMolecular Crystals and Liquid Crystals, 1976
- On the existence of even indexed disclinations in nematic liquid crystalsPhilosophical Magazine, 1973
- Scaling Theory for Finite-Size Effects in the Critical RegionPhysical Review Letters, 1972
- On the schlieren texture in nematic and smectic liquid crystalsJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics, 1972
- Non-singular disclinations of strength S = + 1 in nematicsJournal de Physique, 1972