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Proceedings Paper

Spectroscopy investigations of phase transitions in liquid crystals
Author(s): Valerii E. Pogorelov; Igor P. Pinkevich; Iryna Estrela-Llopis; Vyacheslav Bukalo
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Paper Abstract

The results of study of nonoriented nematic MBBA structural genesis at different temperature pre-history are reported. The temperature depended transformations of vibrational Raman spectra and their connections with the change of MBBA structure were investigated. Spectral region was 1100-1600 cm-1, temperature interval was from 163 K to 333 K. The method allows to prognosticate structural evolution of MBBA and to identify phase states. In particular it is discovered that in dependence on cooling rate several coexisting fractions may be obtained at region lower than glass transition temperature.

Paper Details

Date Published: 23 September 1998
PDF: 12 pages
Proc. SPIE 3488, Nonlinear Optics of Liquid and Photorefractive Crystals II, (23 September 1998); doi: 10.1117/12.323686
Show Author Affiliations
Valerii E. Pogorelov, Kiev National Univ. (Ukraine)
Igor P. Pinkevich, Kiev National Univ. (Ukraine)
Iryna Estrela-Llopis, Kiev National Univ. (Ukraine)
Vyacheslav Bukalo, Kiev National Univ. (Ukraine)

Published in SPIE Proceedings Vol. 3488:
Nonlinear Optics of Liquid and Photorefractive Crystals II
Gertruda V. Klimusheva, Editor(s)

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