Measurement of nematic liquid crystal splay and bend elastic constants with obliquely incident light

With the use of an obliquely incident light propagating in the plane containing the liquid crystal director, a simple optical method is presented to study the planar oriented liquid crystal cell properties. This method is very useful for the measurement of the liquid crystal splay and bend elastic c...

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Bibliographic Details
Published in:Journal of applied physics 1991-08, Vol.70 (4), p.2023-2030
Main Author: Ong, Hiap Liew
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Elasticity, elastic constants
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Physics
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Summary:With the use of an obliquely incident light propagating in the plane containing the liquid crystal director, a simple optical method is presented to study the planar oriented liquid crystal cell properties. This method is very useful for the measurement of the liquid crystal splay and bend elastic constants. Simple analytic formulas are obtained for the optical responses in the parallel and homeotropic oriented nematic liquid crystal cells. The results are applied to the magnetic field-, electric field-, and optical field-induced Freedericksz transitions.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.349461