Highly birefringent nematic mixtures at room temperature for microwave applications

Artiom Lapanik; Wolfgang Haase; Felix Golden; Stefan Muller; Rolf Jakoby

doi:10.1117/1.3564878

1 August 2011 Highly birefringent nematic mixtures at room temperature for microwave applications

Artiom Lapanik, Wolfgang Haase, Felix Golden, Stefan Muller, Rolf Jakoby

Author Affiliations +

Optical Engineering, Vol. 50, Issue 8, 081208 (August 2011). https://doi.org/10.1117/1.3564878

Abstract

We present results on how the dielectric anisotropy in the low frequency region up to 1 GHz and the birefringence of the nematic liquid crystal (LC) phase at optical wavelength (589 nm) influences the performance of LC mixtures at microwave frequencies. For this, we prepared a wide range of mixtures being nematic at room temperature and containing different classes of promising compounds. Their quasistatic and frequency depended dielectric properties, their birefringence and the impact of those properties on their microwave behavior were investigated. The measurements were done using the cavity perturbation method at 30 and 38 GHz, respectively, in the temperature interval of -20°C and 135°C.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Artiom Lapanik, Wolfgang Haase, Felix Golden, Stefan Muller, and Rolf Jakoby "Highly birefringent nematic mixtures at room temperature for microwave applications," Optical Engineering 50(8), 081208 (1 August 2011). https://doi.org/10.1117/1.3564878

Published: 1 August 2011

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