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Temperature Dependence of Optical Parameters by Image Analysis in Nematic Liquid Crystals


Temperature Dependence of Optical Parameters by Image Analysis in Nematic Liquid Crystals
Authors : Ch. Venkayamma, S. Sreehari Sastry
Publication Date: 14-03-2017

Authors

Author(s):  Ch. Venkayamma, S. Sreehari Sastry

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Volume. 6 - Issue. 03 , March - 2017

e-ISSN:   2278-0181

 DOI:  http://dx.doi.org/10.17577/IJERTV6IS030191

Abstract

In this paper, thermo optical properties of nematic liquid crystal: N-4-methoxybenzylidene-4-butylaniline (MBBA) has been investigated by means of applying Image analysis technique in conjunction with Polarizing Optical Microscope. Textures of liquid crystal complexes are captured. The changes in textural features as a function of temperature are useful to compute the thermo optical properties. These microscopic textures are analyzed using MATLAB software. The investigated thermo optical parameters are optical transmission, Absorption coefficient, Phase retardation, birefringence and order parameter. Experimentally, this is a simple technique to observe the behavior of the optical parameters of different liquid crystals as a function of temperature.

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