## Abstract Liquid crystals with negative ฮฯต 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
Broadband reflective liquid crystalline films prepared from liquid crystals with negative dielectric anisotropy
โ Scribed by Li, Kexuan; Cheng, Zihui; Guo, Renwei; Zhang, Lipei; Wang, Feifei; Wu, Xiaojuan; Cao, Hui; Yang, Huai; Yang, Deng-ke
- Book ID
- 120529576
- Publisher
- Taylor and Francis Group
- Year
- 2012
- Tongue
- English
- Weight
- 788 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0267-8292
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
We report here uniform and defect-free homeotropic alignment of nematic liquid crystal having negative dielectric anisotropy (ฮฮต<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
## 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 us