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  • Title: Surface alignment and anchoring transitions in nematic lyotropic chromonic liquid crystal.
    Author: Nazarenko VG, Boiko OP, Park HS, Brodyn OM, Omelchenko MM, Tortora L, Nastishin YA, Lavrentovich OD.
    Journal: Phys Rev Lett; 2010 Jul 02; 105(1):017801. PubMed ID: 20867479.
    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.
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