Influence of a.c. Electric Field on Infrared Absorption Spectra of Liquid Crystals and Determination of Orientational Order Parameter by Infrared Dichroism. II. Molecules with Weak Negative Dielectric Anisotropy |
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| Authors: | N. Kirov P. Simova H. Ratajczak |
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| Affiliation: | 1. Institute of Solid State Physics , 72 Boul., Lenin, 1113, Sofia;2. Institute of Chemistry , 14 Joliot-Curie, 50–383, Wroclaw;3. Institute of Solid State Physics , 72 Boul., Lenin, 1113, Sofia |
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| Abstract: | The influence of a.c. electric field (10 kHz) on the IR spectra of the nematic phase of six p-alkoxybenzylidene-p,n-butylanilines with weak negative dielectric anisotropy was studied and the temperature dependence of the orientational order parameter and threshold voltage have been investigated. The values of band elastic constants K33 were calculated for MBBA and EBBA. |
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| Keywords: | Keywords Liquid crystals x-ray phenylbenzoates phase transistors transcyclohexane- 1,4-dicarboxylates |
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