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Optical Measurements of Thermotropic Liquid Crystals
Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
Physics Department, Faculty of Science, Cairo University, Giza, Egypt
Physics Department, Faculty of Science, Benha University, Benha, Egypt
Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
Physics Department, Faculty of Science, Benha University, Benha, Egypt
- 1 Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
- 2 Physics Department, Faculty of Science, Cairo University, Giza, Egypt
- 3 Physics Department, Faculty of Science, Benha University, Benha, Egypt
- 4 Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
- 5 Physics Department, Faculty of Science, Benha University, Benha, Egypt
Journal of Modern Physics·Volume 04 (2013)·Pages 39–48·Published 11 January 2013·DOI10.4236/jmp.2013.41008
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Abstract
In this work, an experimental approach was used for measuring birefringence of thermotropic liquid crystal materials at different wavelengths in the visible region by using speckle interferometry. Also the values of the refractive indices were measured for these thermotropic liquid crystal materials in isotropic and liquid crystal phases at different wave - lengths. Temperature dependency of the refractive indices for each LC sample at certain wavelengths was investigated in the isotropic and in LC phases.
KeywordsThermotropic Liquid CrystalInterferenceBirefringenceSpeckle Photography
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