High birefringence liquid crystal mixtures for electro-optical devices

High-birefringence nematic liquid crystals recently developed in the Military University of Technology (Poland) are examined for selected physical properties. In particular, for six liquid crystal mixtures there were determined: two components of dielectric permittivity for voltage frequencies in the range from 10 Hz to 10 MHz; rotational viscosity; splay, twist and bend elastic constants; ordinary and extraordinary refractive indices for light wavelengths in the range from 0.3 μm to 1.6 μm. The properties are discussed in terms of applicability of the new liquid crystals to electro-optical devices.

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