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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:41 |
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Conference: Bucharest University Faculty of Physics 2016 Meeting
Section: Polymer Physics
Title:
Study of the optical parameters of the nematic crystals by means of image analysis
Authors:
Constantin Catalin Armeanu(1), Bogdan BUTOI(1,2), Emil BARNA(1)
Affiliation:
1)University of Bucharest, Faculty of Physics, P.O.BOX MG-11, Magurele, Bucharest, Romania
2) National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, Magurele, Romania
E-mail
catalinarmeanu@gmail.com
Keywords:
liquid crystals, thermo-optical parameter, textures, image analysis
Abstract:
We investigated thermo-optical proprieties of nematic E7 liquid crystal by means of image analysis techniques obtained with a polarizing optical microscope and a Matlab routine. The textures of crystal liquid are captured via microscope and the changes in textural features as a function of temperature, using a Peltier Cell for gradually heating, are useful to compute the thermo-optical proprieties. These microscopic captured textures are analyzed using a Matlab routine for studying parameters like optical transmission, Absorption coefficient, Phase retardation, birefringence and order parameter.
References:
(1) Radu Mutihac, Medical Imaging, Editura Universitatii din Bucuresti, 2011
(2) Silvia Curteanu, Initiere in Matlab, Editura Polirom, 2008
(3) Rafael Gonzales, Richard Woods, Steven Eddins, Digital Image Processing Using Matlab,Pearson Education, 2004
(4) S. Sreehari Sastry, K. Lakshmi Sarada, K. Mallika, L. Tanuj Kumar, Ha Sie Tiong, Determination of Thermo Optical Parameters Using Image Analysis Technique in nBA: 7HB Hydrogen Bonded Liquid Crystals, International Journal of Innovative Research in Science,Engineering and Technology, Vol. 4, Issue 1, January 2015
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