Paper
24 April 1995 High-birefringence dopants for use in ferroelectric and nematic liquid crystal mixtures
Michael D. Wand, Rohini T. Vohra, William N. Thurmes, Kundalika M. More
Author Affiliations +
Proceedings Volume 2408, Liquid Crystal Materials, Devices, and Displays; (1995) https://doi.org/10.1117/12.207523
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1995, San Jose, CA, United States
Abstract
Ferroelectric smectic C* liquid crystals have been shown to exhibit high speed, electro-optic switching when incorporated into the surface stabilized ferroelectric liquid crystal (SSFLC) light valve. Certain applications utilizing IR modulation, waveguide, and phase modulation, and certain fiber-optic devices, can benefit from materials with a birefringence higher than that typically seen in FLC materials ((Delta) n approximately equals 0.15). A new class of compounds, the tolane cinnamates, was developed to help meet this need. These compounds combine a cinnamate moiety with the well known high birefringence tolane core, resulting in two improvements: first, the birefringence increases from 0.24 to 0.29; and second, the tolane cinnamate system is significantly more stable to UV light than the parent tolane system. The new materials show smectic C as well as nematic phases and demonstrate good compatibility with both nematic and FLC hosts.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael D. Wand, Rohini T. Vohra, William N. Thurmes, and Kundalika M. More "High-birefringence dopants for use in ferroelectric and nematic liquid crystal mixtures", Proc. SPIE 2408, Liquid Crystal Materials, Devices, and Displays, (24 April 1995); https://doi.org/10.1117/12.207523
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KEYWORDS
Birefringence

Ultraviolet radiation

Liquid crystals

Sulfur

LCDs

Polarization

Argon

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