Pyroelectric studies on liquid crystals

Kent Skarp; Gunnar Andersson; Rudolf Zentel; H. Poths

doi:10.1117/12.207525

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24 April 1995 Pyroelectric studies on liquid crystals

Kent Skarp, Gunnar Andersson, Rudolf Zentel, H. Poths

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Proceedings Volume 2408, Liquid Crystal Materials, Devices, and Displays; (1995) https://doi.org/10.1117/12.207525
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1995, San Jose, CA, United States

Abstract

We have studied the pyroelectric behavior of both low molecular weight and polymeric ferroelectric liquid crystals. The alignment and electric quality of the pyroelectric LC samples is found to strongly influence the measured pyrosignal. The pyroelectric current is recorded as a function of temperature, and by a calibration procedure absolute values of the pyroelectric coefficient can be obtained. For a well-aligned siloxane copolymer FLC with high spontaneous polarization, a maximum value of about 13 nC/cm².K for the pyroelectric coefficient was evaluated, comparable to values found for low-molar mass compounds.

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Kent Skarp, Gunnar Andersson, Rudolf Zentel, and H. Poths "Pyroelectric studies on liquid crystals", Proc. SPIE 2408, Liquid Crystal Materials, Devices, and Displays, (24 April 1995); https://doi.org/10.1117/12.207525

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