Geodesic
Orientational order parameter of liquid crystalline mixtures — a birefringence study
Nanosistemy: fizika, himiâ, matematika, Tome 9 (2018) no. 6, pp. 735-740 Cet article a éte moissonné depuis la source Math-Net.Ru

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The orientational order parameter is one of the most important material parameters of nematic phase. In the present work, the phase transition temperatures of the mesogenic mixtures are measured by using a polarizing optical microscope. The birefringence in nematic phase is estimated by measuring ordinary and extraordinary refractive indices. The birefringence is also measured by measuring the diameter of Newton’s rings at various temperatures in nematic phase. The orientational order parameter is evaluated by using the birefringence data obtained in the above two methods. The orientation order parameter can be enhanced by the dispersion of different nanoparticles in the liquid crystal matrix.
Keywords: Liquid crystalline mesogens, orientational order parameter, birefringence, refractive index, Newtons rings. 
@article{NANO_2018_9_6_a4,
     author = {Shahina and C. M. Subhan and S. Rangappa and K. Fakruddin},
     title = {Orientational order parameter of liquid crystalline mixtures~{\textemdash} a birefringence study},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {735--740},
     year = {2018},
     volume = {9},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2018_9_6_a4/}
}
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Shahina; C. M. Subhan; S. Rangappa; K. Fakruddin. Orientational order parameter of liquid crystalline mixtures — a birefringence study. Nanosistemy: fizika, himiâ, matematika, Tome 9 (2018) no. 6, pp. 735-740. http://geodesic.mathdoc.fr/item/NANO_2018_9_6_a4/