Birefringence measurement on the liquid crystal by phase modulation technique

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A convenient and accurate technique for measuring the birefringence of liquid crystal (LC) is developed. The birefringence of LC was obtained with only one experimental run by using phase modulation technique, which is an expansion of PMFB (Phase Modulated Flow Birefringence) technique developed elsewhere [1], The basic principle of the method is based on the determination of the phase differences which occur when a phase modulated monochromatic polarized light propagates through a medium with an anisotropic refractive index. Birefringence measurements with red light (wavelength: 0.6328μm) for commercial liquid crystal material (Merck, ZLI 3201-000) are reported. © 1990 Korean Institute of Chemical Engineering.
Publisher
Korean Institute of Chemical Engineers
Issue Date
1990-01
Language
English
Citation

KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.7, no.1, pp.18 - 21

ISSN
0256-1115
URI
http://hdl.handle.net/10203/62670
Appears in Collection
CBE-Journal Papers(저널논문)
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