Ultra-low viscosity liquid crystal materials

Ultra-low viscosity liquid crystal materials

We report five ultra-low viscosity nematic liquid crystal mixtures with birefringence around 0.1, dielectric anisotropy in the range of 3 to 6, and clearing temperature about 80°C. A big advantage of these low viscosity mixtures is low activation energy, which significantly suppresses the rising rate of viscosity at low temperatures. Using our mixture M3 as an example, the response time of a 3-...

Liquid Crystal Materials and Liquid Crystal Displays

Since the early 1970s, three major prerequisites have brought the success of the liquid crystal display (LCD) technology to its key role of today. Namely, the discovery of electro-optical field-effects on which the displays are based, the successful search for liquid crystals (LCs) with material properties that meet the complex requirements of electro-optical effects and render the effects appl...

Low Absorption Liquid Crystal Materials for Midwave Infrared

IV. Photorefractive and liquid crystal materials.

1. See, for example, L. L. Chang and K. Ploog, Eds., Molecular Beam Epitaxy and Heterostructures (NATO Advanced Sciences Institute Series, Nijhoff, Dordrecht, 1985). 2. See, for example, J. B. Mullin et al., Metal Organic Vapor Phase Epitaxy (North-Holland, Amsterdam, 1984). 3. The IEEE J. Quantum Electron. recently published (Sept. 1986) a special issue devoted to quantum well structures. This...

Ultra Wide Band Liquid Crystal Polymer Microstrip Elliptical Patch Antenna

A microstrip elliptical patch antenna was designed on liquid crystal polymer substrate for ultra wide band wireless communications. The proposed ultra wide band antenna simply consist of an elliptical patch with coaxial feeding and liquid crystal polymer substrate of 3.16 permittivity and 0.004 dielectric loss tangent placed on the ground plane. At operating frequencies of 4.5, 6, 8 GHz, the pr...