𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Stable Liquid Crystals with Large Negative Dielectric Anisotropy. Part IV

✍ Scribed by Maged A. Osman; T. Huynh-Ba

Publisher
John Wiley and Sons
Year
1983
Tongue
German
Weight
217 KB
Volume
66
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Stable liquid crystals with negative dielectric anisotropy containing the bicyclo [2.2.2]octyl group were synthesized. The incorporation of this moiety in the molecules increased the thermodynamic stability of the mesophase and lowered the smectic tendency. These new compounds can be useful in liquid crystal mixtures for homeotropic nematic displays.

πŸ“œ SIMILAR VOLUMES

Liquid Crystals with Large Negative Diel
Liquid Crystals with Large Negative Dielectric Anisotropy. Part V
✍ Maged A. Osman πŸ“‚ Article πŸ“… 1985 πŸ› John Wiley and Sons 🌐 German βš– 203 KB

## Abstract Liquid crystals with negative Δϡ can be obtained by incorporating a cyano group in the terminal alkyl substituent or in an ethylene bridge between the cyclic units of the rigid core. The clearing points of such compounds are higher than those of the corresponding derivatives where the c

Homeotropic alignment of nematic liquid
Homeotropic alignment of nematic liquid crystals with negative dielectric anisotropy
✍ G. Singh; G. Vijaya Prakash; A. Choudhary; A.M. Biradar πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 348 KB

We report here uniform and defect-free homeotropic alignment of nematic liquid crystal having negative dielectric anisotropy (ΔΡ<0) 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