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Liquid Crystals and their Application
Russian Journal Zhidkie kristally i ikh prakticheskoe ispol'zovanie Жидкие кристаллы и их практическое использование |
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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2019, 19 (2), 69—75.
DOI: 10.18083/LCAppl.2019.2.69 |
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Photon Correlation Spectroscopy for Investigation of Viscous-Elastic Properties of Shock-Free Ferroelectric Liquid Crystal
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G. I. Maksimochkin1, D. V. Shmeliova1, S. V. Pasechnik1, E. P. Pozhidaev2,
S. S. Kharlamov1, A. A. Konovalova1
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Author affiliations
1Problem Laboratory of Molecular Acoustics, Russian Technological University,
78 Vernadsky Av., Moscow, 119454, Russia
E-mail: s–p–a–s–m@mail.ru
2P.N. Lebedev Physical Institute,
53 Leninsky Pr., Moscow, 119991, Russia
E-mail: epozhidaev@mail.ru
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Abstract
Photon correlation spectroscopy was applied for the first time to study viscous-elastic properties of ferroelectric liquid crystal showing relatively high fluidity in smectic C* phase (shock-free FLC). The spectral analysis of correlation functions made it possible to calculate viscous-elastic ratios defining dynamics of Goldstone mode of director’s fluctuations. The obtained results were discussed taking into account the data on elastic and viscous parameters derived from independent experiments.
Keywords: ferroelectric liquid crystal, photon correlation spectroscopy, viscous-elastic properties
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