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Proceedings Paper

Technical aspects of measurements of helical parameters in chiral phases
Author(s): Jerzy Kedzierski; Pawel Perkowski; Zbigniew Raszewski; Jolanta Rutkowska; Wiktor Piecek; Ludwika Lipinska
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Paper Abstract

The helical pitch for cholesteric and ferroelectric Sm C* phases has been measured. For cholesteric and also for Sm C* measurements have been done for several mixtures characterized by various concentration of chiral molecules. They have been done in planar geometry for cholesteric phase and in homeotropic geometry for Sm C* phase. Measurements involving reflection and transmission modes have been carried out. It has been used Grandjean-Cano method. We have done conoscopic and orthoscopic observations. Sign of the chirality has been found by Airy's spires method.

Paper Details

Date Published: 1 February 1998
PDF: 6 pages
Proc. SPIE 3318, Liquid Crystals: Physics, Technology, and Applications, (1 February 1998); doi: 10.1117/12.299957
Show Author Affiliations
Jerzy Kedzierski, Military Univ. of Technology (Poland)
Pawel Perkowski, Military Univ. of Technology (Poland)
Zbigniew Raszewski, Military Univ. of Technology (Poland)
Jolanta Rutkowska, Military Univ. of Technology (Poland)
Wiktor Piecek, Military Univ. of Technology (Poland)
Ludwika Lipinska, Institute of Electronic Materials Technology (Poland)


Published in SPIE Proceedings Vol. 3318:
Liquid Crystals: Physics, Technology, and Applications

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