TITLE

Method for the measurement of the K[sub 22] nematic elastic constant

AUTHOR(S)
Raynes, E. P.; Brown, C. V.; Strömer, J. F.
PUB. DATE
January 2003
SOURCE
Applied Physics Letters;1/6/2003, Vol. 82 Issue 1, p13
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A technique has been developed for the measurement of the K[sub 22] twist elastic constant in nematic liquid crystal materials. This involves the measurement of the Freedericksz transition voltages in untwisted linear and π-twist regions in a wedge cell geometry. The method avoids the need for the accurate determination of the cell thickness and cholesteric pitch and is far more straightforward to implement than other methods in the literature. The validity of this method is demonstrated for the well-characterized material E7.
ACCESSION #
8781331

 

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