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Proceedings Paper

Spectral investigation of different LC polymorphic modifications with induced spiral structure
Author(s): Andrey G. Iljin; Gertruda V. Klimusheva; Viktor I. Kulishov; A. G. Tereshchenko; A. S. Tolochko; L. P. Yatsenko
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Paper Abstract

According to the papers, liquid crystalline mixtures of achiral mesogen matrix and chiral mesogen additive area of great interest for the investigations of structural and physical properties of twist-grain-boundary (TGB) phases. Such systems allow studying the changes of the structure and properties of TGB phases resulting from the difference in the chiral additive concentration. We used liquid crystalline systems, polymorphism, structure and some physical properties of which had been investigated earlier. Of particular interest was to investigate selective reflection spectra and optical activity of helical smectic A (SmA*) in comparison with the same properties of the neighboring mesophases--a chiral nematic liquid crystal (N*) and a smectic C (SmC*)--with the different temperatures and chiral agent's concentrations. A comparative analysis of obtained spectral and optical characteristics of described mesophases and some conclusions on the peculiarities of the packing structure of these phases have been made in this paper.

Paper Details

Date Published: 12 May 2000
PDF: 4 pages
Proc. SPIE 4147, Liquid Crystals: Chemistry, Physics, and Applications, (12 May 2000); doi: 10.1117/12.385671
Show Author Affiliations
Andrey G. Iljin, Institute of Physics (Ukraine)
Gertruda V. Klimusheva, Institute of Physics (Ukraine)
Viktor I. Kulishov, Institute of Physics (Ukraine)
A. G. Tereshchenko, Institute of Physics (Ukraine)
A. S. Tolochko, Institute of Physics (Ukraine)
L. P. Yatsenko, Institute of Physics (Ukraine)

Published in SPIE Proceedings Vol. 4147:
Liquid Crystals: Chemistry, Physics, and Applications
Stanislaw J. Klosowicz; Jolanta Rutkowska; Jerzy Zielinski; Jozef Zmija, Editor(s)

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