Orientational order parameter studies on 3.Om and 3O.Om liquid crystals |
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| Authors: | D. Venkata Rao P. Pardhasaradhi P.V. Datta Prasad |
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| Affiliation: | 1. Department of Physics, S V College of Engineering, S V University, Tirupathi, India;2. LCRC, Department of ECE, K.L. University, Vaddeswram, India;3. R&4. D Department, SSD Polymers, Machilipatnam, India |
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| Abstract: | Orientational order parameter S is evaluated in the nematic phase of six liquid crystal compounds, N-(p-n-propyl benzylidene)-p-n-alkoxy anilines, 3.Om and N-(p-n-propyloxy benzylidene)-p-n-alkoxy anilines, 3O.Om compounds with m = 6, 7 and 8, using different methods. The techniques employed are S from birefringence δn, Haller's approximation from (1?T/Tc) β, effective geometry parameter αg and Vuks’ scaling factor SC. The values of S obtained using the above methods are compared with one another and with the results on a number of liquid crystals; the liquid crystals favor isotropic Vuks’ method. |
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| Keywords: | N-(p-n-alkyloxy benzeledene)-p-n-alkyl anilines, nO.m and N-(p-n-alkyloxy benzeledene)-p-n-alkyloxy anilines, nO.Om compounds birefringence order parameter Haller's approximation |
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