Voltage dependent director of a homeotropic negative liquid crystal cell
Ruan, Lizhen; Yang, Fuzi; Sambles, J. Roy
Date: 2008
Journal
Applied Physics Letters
Publisher
American Institute of Physics
Publisher DOI
Abstract
Thin layers of obliquely (60° to normal) thermally evaporated SiOx lead to homeotropic alignment of a nematic liquid crystal (LC) having negative dielectric anisotropy. Under application of an ac voltage the director, as characterized by the fully leaky waveguide technique, is found to realign with a voltage controlled tilt along the ...
Thin layers of obliquely (60° to normal) thermally evaporated SiOx lead to homeotropic alignment of a nematic liquid crystal (LC) having negative dielectric anisotropy. Under application of an ac voltage the director, as characterized by the fully leaky waveguide technique, is found to realign with a voltage controlled tilt along the evaporation direction. This behavior is in complete contrast with that of a LC having positive dielectric anisotropy and may have important implications for modern LC display technology.
Physics and Astronomy
Faculty of Environment, Science and Economy
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