New method for measuring the viscoelastic twist properties of nematic liquid crystals by evanescent wave scattering

Chien-Ming Chen; Keiichi Wakida; Masahiko Hiraki; Kiyoshi Takamasu; Shigeo Ozono

doi:10.1117/12.279263

30 October 1997 New method for measuring the viscoelastic twist properties of nematic liquid crystals by evanescent wave scattering

Chien-Ming Chen, Keiichi Wakida, Masahiko Hiraki, Kiyoshi Takamasu, Shigeo Ozono

Author Affiliations +

Proceedings Volume 3143, Liquid Crystals; (1997) https://doi.org/10.1117/12.279263
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

There exist many studies for measuring the viscoelastic properties with the Frederiks transition of nematic liquid crystal sin an external field. It usually needs to measure the threshold field before measuring the viscoelastic properties. This study introduces the method of measuring the scattering of nematic liquid crystals with evanescent-wave to get the threshold field since it can make sure the anchoring condition. The result for the elastic constants and twist viscosity (gamma) are reported and compared with the data from the liquid crystals supplier.

Citation Download Citation

Chien-Ming Chen, Keiichi Wakida, Masahiko Hiraki, Kiyoshi Takamasu, and Shigeo Ozono "New method for measuring the viscoelastic twist properties of nematic liquid crystals by evanescent wave scattering", Proc. SPIE 3143, Liquid Crystals, (30 October 1997); https://doi.org/10.1117/12.279263

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