Optical Measurements of Thermotropic Liquid Crystals - Journal of Modern Physics

JMP > Vol.4 No.1, January 2013

Journal of Modern Physics

Volume 4, Issue 1 (January 2013)

ISSN Print: 2153-1196 ISSN Online: 2153-120X

Google-based Impact Factor: 0.97 Citations

Optical Measurements of Thermotropic Liquid Crystals ()

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Download as PDF (Size: 1820KB) PP. 39-48

DOI: 10.4236/jmp.2013.41008 6,176 Downloads 9,526 Views Citations

Author(s)

Tawfik A. El-Dessouki, Mohammed Roushdy, Nabil I. Hendawy, Magdi M. Naoum, Ayman A. Zaki

Affiliation(s)

Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt.
Physics Department, Faculty of Science, Benha University, Benha, Egypt.
Physics Department, Faculty of Science, Cairo University, Giza, Egypt.

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.

KEYWORDS

Thermotropic Liquid Crystal; Interference; Birefringence; Speckle Photography

Share and Cite:

T. El-Dessouki, M. Roushdy, N. Hendawy, M. Naoum and A. Zaki, "Optical Measurements of Thermotropic Liquid Crystals," Journal of Modern Physics, Vol. 4 No. 1, 2013, pp. 39-48. doi: 10.4236/jmp.2013.41008.

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