ANCHORING PROPERTIES OF LYOTROPIC LIQUID-CRYSTALS NEAR THE NEMATIC-ISOTROPIC TRANSITION

Authors
OLIVEIRA EA NETO AMF
Citation
Ea. Oliveira et Amf. Neto, ANCHORING PROPERTIES OF LYOTROPIC LIQUID-CRYSTALS NEAR THE NEMATIC-ISOTROPIC TRANSITION, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 49(1), 1994, pp. 629-635
Citations number
23
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
49
Issue
1
Year of publication
1994
Pages
629 - 635
Database
ISI
SICI code
1063-651X(1994)49:1<629:APOLLN>2.0.ZU;2-6
Abstract
In lyotropic liquid crystals the director at the boundary surfaces can be oriented by an external magnetic field, with a time constant tau(s ) about 10(3) times greater than that in the bulk. Measurements of tau (s) are presented for a lyotropic sample of potassium laurate, decanol , and water in the nematic calamitic phase (N-c) in the vicinity of th e nematic-isotropic transition. It is shown that tau(s) decreases line arly in the N-c phase when the temperature approaches T-c [Oliveira, F igueiredo Neto, and Durand, Phys. Rev. A 44, 825 (1991)].