文章基本信息

标题：Determination of Thermo Optical Parameters Using Image Analysis Technique in nBA: 7HB Hydrogen Bonded Liquid Crystals
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作者：S. Sreehari Sastry ; K. Lakshmi Sarada ; K. Mallika 等
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：1
页码：18470
DOI：10.15680/IJIRSET.2015.0401010
出版社：S&S Publications
摘要：In this paper, thermo optical properties of homologous series of hydrogen bonded liquid crystals: p-nalkyl benzoic acid (nBA): heptyl p - hydroxybenzoate (7HB) (where n=5 to 10) have been investigated by means ofapplying Image analysis technique in conjunction with Polarizing Optical Microscope. Textures of liquid crystalcomplexes are captured. The changes in textural features as a function of temperature are useful to compute the thermooptical properties. These microscopic textures are analysed using MATLAB software. The investigated thermo opticalparameters are optical transmission, Absorption coefficient, Phase retardation, birefringence and order parameter.Experimentally, this is a simple technique to observe the behaviour of the optical parameters of different liquid crystalsas a function of temperature.
关键词：Liquid crystals; Hydrogen bond; Thermo optical parameter; Textures; Image analysis