Comparative Study of the Thermal Dependence of the Birefringence and Order Parameter of Two nOCB Compounds |
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| Authors: | Koushik Sarkar Anuradha Mukhopadhyay Krzysztof Czuprynski |
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| Institution: | 1. Department of Physics, Jadavpur University, Kolkata, India;2. Faculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland |
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| Abstract: | The optical properties, birefringence and order parameter of two alkoxycyanobiphenyls (nOCBs, where n = 5 or 8) have been studied as a function of temperature. The variation of orientational order parameter has been determined experimentally. Theoretical order parameter values have also been computed in the smectic range using McMillan potential and in the nematic range using Maier–Saupe potential and compared with the experimentally obtained values. The variations of polarizabilities with temperature have also been evaluated from density variation and birefringence studies. |
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| Keywords: | Birefringence order parameter polarizability thermotropic liquid crystals |
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