Analysis of birefringence property of three different nematic liquid crystals dispersed with TiO2 nanoparticles |
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| Authors: | G Pathak R Katiyar K Agrahari A Srivastava R Dabrowski K Garbat R Manohar |
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| Institution: | 1. Liquid Crystal Research Lab, Department of Physics, University of Lucknow, Lucknow, 226007, India;2. Institute of Chemistry, Military University of Technology, S. Kaliskiego 2, 00-908 Warsaw, Poland |
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| Abstract: | In the present work TiO2 nanoparticles (NPs) have been dispersed into three different nematic liquid crystals (2020, 1823A and 1550C) in different concentration. The value of the birefringence (Δn) has been calculated by the transmitted intensity method at a 632.8 nm wavelength. NLC 2020 used in the present study is a high birefringent material (Δn = 0.44), NLC 1550C is a low birefringent material (Δn = 0.067) and NLC 1823A is a mid birefringent material (Δn = 0.14). An increased value of birefringence has been found after dispersion of TiO2 NPs in all three NLCs but this increment depends upon the concentration of the dopant material, temperature range and chemical character of the mixtures. It is suggested that this LC materials can be applicable in making of phase shifters, compensators and many more photonic devices. |
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| Keywords: | Nematic liquid crystal Birefringence |
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