Enhanced optoelastic interaction range in liquid crystals with negative dielectric anisotropy

Enhanced optoelastic interaction range in liquid crystals with negative dielectric anisotropy

Homeotropic alignment of nematic liquid crystals with negative dielectric anisotropy

We report here uniform and defect-free homeotropic alignment of nematic liquid crystal having negative dielectric anisotropy (Deo0) on cleaned substrates, which can be changed to bright state (homogeneous alignment) by applying an electric field. However, non-uniformity in the bright state would not be desirable for display devices. Therefore, silane treated and gently rubbed substrates have be...

High Performance Negative Dielectric Anisotropy Liquid Crystals for Display Applications

We review recent progress in the development of high birefringence (Δn ≥ 0.12) negative dielectric anisotropy (Δε < 0) liquid crystals (LCs) for direct-view and projection displays. For mobile displays, our UCF-N2 (low viscosity, negative Δε, high Δn) based homogeneous alignment fringe-field switching (called n-FFS) mode exhibits superior performance to p-FFS in transmittance, single gamma curv...

High birefringence and low viscosity negative dielectric anisotropy liquid crystals

High birefringence and low viscosity negative dielectric anisotropy liquid crystals Sebastian Gauza a; Meizi Jiao a; Shin-Tson Wu a; Przemysaw Kula b; Roman Dbrowski b; Xiao Liang c a College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA b Institute of Chemistry, Military University of Technology, 00-908 Warsaw, Poland c Department of Chemistry, Tsinghua Univers...

Distortion of the cholesteric planar texture in liquid crystals with a negative dielectric anisotropy

2014 A study is made of the formation of new planar regions during the electrohydrodynamic distortion of the cholesteric planar texture in liquid crystals with a negative dielectric anisotropy. With increasing voltage successive planar regions are observed which are associated with an increasing number of helices across the layer with steady planar boundary conditions. The resulting pitch contr...