title: Surface alignment and anchoring transitions in nematic lyotropic chromonic liquid crystal.
abstract: The surface alignment of lyotropic chromonic liquid crystals can not only be planar (tangential) but also homeotropic, with self-assembled aggregates perpendicular to the substrate, as demonstrated by mapping optical retardation and by three-dimensional imaging of the director field. With time, the homeotropic nematic undergoes a transition into a tangential state. The anchoring transition is discontinuous and can be described by a double-well anchoring potential with two minima corresponding to tangential and homeotropic orientation.
authors.affiliation: Institute of Physics, prospect Nauky 46, Kiev-39, 03039, Ukraine.
authors.forename: V G
authors.initials: VG
authors.lastname: Nazarenko
authors.forename: O P
authors.initials: OP
authors.lastname: Boiko
authors.forename: H-S
authors.initials: HS
authors.lastname: Park
authors.forename: O M
authors.initials: OM
authors.lastname: Brodyn
authors.forename: M M
authors.initials: MM
authors.lastname: Omelchenko
authors.forename: L
authors.initials: L
authors.lastname: Tortora
authors.forename: Yu A
authors.initials: YA
authors.lastname: Nastishin
authors.forename: O D
authors.initials: OD
authors.lastname: Lavrentovich