| | 1 | Author
| Ingo Dierking, Frank Gießelmann, Peter Zugenmaier | Requires cookie* | | | Title
| A  | | | | Abstract
| n O p tic a l M e th o d f o r th e D e te r m in a tio n o f th e C h o le s te r ic P itc h in L iq u id C r y s ta ls Preparation of a cholesteric liquid crystalline phase in planar orienting liquid crystal cells exhibits discontinuous colour changes with temperature when viewed between crossed polarizers. The trans mission spectra of such a system can be described by a modified de Vries equation, with the bire fringence dispersion included in a simplified single-band model. With a suitable choice of the cell gap as compared to the cholesteric pitch, the procedure can be used as a new method to determine the temperature dependence of the cholesteric pitch. | | | |
Reference
| Z. Naturforsch. 50a, 589—594 (1995); received December 17 1994 | | | |
Published
| 1995 | | | |
Keywords
| Liquid crystal, cholesteric mesophase, pitch determination, birefringence dispersion, twist inversion | | | |
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| default:Reihe_A/50/ZNA-1995-50a-0589.pdf | | | | Identifier
| ZNA-1995-50a-0589 | | | | Volume
| 50 | |
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