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Proceedings Paper

Technical aspects of measurement of elastic constants and diamagnetic anisotropy of nematic liquid crystals
Author(s): Jerzy Kedzierski; Zbigniew Raszewski; Jolanta Rutkowska; Tadeusz Opara; Jerzy Zielinski; Jozef Zmija; Roman S. Dabrowski
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Paper Abstract

We have measured the critical values of electric Ec and magnetic Hc fields in different types of Freedericksz transitions for 4-trans-n-hexyl-cyclohexyl-isothiocyanatobenzene (6CHBT). Capacitive and optical methods have been employed to detect these transitions. In the case of twist-type deformation we have proposed a new interference method for threshold fields determination. On the basis of these measurements diamagnetic anisotropy (Delta) (Chi) splay K11, twist K22 and bend K33 elastic constants have been calculated for cells of various thickness, coated with different polyimides.

Paper Details

Date Published: 15 October 1993
PDF: 5 pages
Proc. SPIE 1845, Liquid and Solid State Crystals: Physics, Technology and Applications, (15 October 1993); doi: 10.1117/12.156984
Show Author Affiliations
Jerzy Kedzierski, Military Technical Academy (Poland)
Zbigniew Raszewski, Military Technical Academy (Poland)
Jolanta Rutkowska, Military Technical Academy (Poland)
Tadeusz Opara, Military Technical Academy (Poland)
Jerzy Zielinski, Military Technical Academy (Poland)
Jozef Zmija, Military Technical Academy (Poland)
Roman S. Dabrowski, Military Technical Academy (Poland)

Published in SPIE Proceedings Vol. 1845:
Liquid and Solid State Crystals: Physics, Technology and Applications

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