Determination of the tilt angles at surfaces of substrates in liquid crystal cells
โ Scribed by G. Baur; V. Wittwer; D.W. Berreman
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 207 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0375-9601
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We present a new method of measuring the tilt angle and the optical biaxiality in liquid crystals (LCs). The method uses a fitting procedure of the optical path difference in specially prepared LC cells. Measurements are performed in the Sc phase of 4-n-hexyloxyplienyl-4n-decyloxybenzoate (HOPDOH) b
## Abstract Contact angle of water and formamide droplets on natural quartz crystals were observed. The specific surface free energy (SSFE) of m, r, and z faces, calculated using the Fowkes approximation, were approximately 54โ69 mN/m. The length of the normal line from the center of the crystal to