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Optical Measurements of Thermotropic Liquid Crystals
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作者 Tawfik A. El-Dessouki mohammed roushdy +2 位作者 Nabil I. Hendawy Magdi M. Naoum Ayman A. Zaki 《Journal of Modern Physics》 2013年第1期39-48,共10页
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 t... 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. 展开更多
关键词 THERMOTROPIC Liquid CRYSTAL INTERFERENCE BIREFRINGENCE SPECKLE PHOTOGRAPHY
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