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Proceedings Paper

Ferroelectric liquid crystalline polymers with large pyroelectric coefficients for infrared detectors
Author(s): J. Ruth; Banahalli R. Ratna; Jawad W. Naciri; Ranganathan Shashidhar; S. K. Prasad; D. S. Shankar Rao; S. Chandrasekhar
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Paper Abstract

We have synthesized many ferroelectric side-chain liquid crystalline polymers exhibiting the Smectic C* phase over a wide temperature range extending to sub-ambient temperatures. The tuning of the mesophase temperature has been achieved by incorporating two different mesogens as side groups attached to the siloxane backbone. These copolymers exhibit large values of spontaneous polarization which varies linearly through out the Smectic C* phase. The pyroelectric coefficient and dielectric constants of these materials have been measured. The potential of these ferroelectric liquid crystals as pyroelectric detector materials will be examined.

Paper Details

Date Published: 13 August 1993
PDF: 7 pages
Proc. SPIE 1911, Liquid Crystal Materials, Devices, and Applications II, (13 August 1993); doi: 10.1117/12.151209
Show Author Affiliations
J. Ruth, Naval Research Lab. (United States)
Banahalli R. Ratna, Naval Research Lab. (United States)
Jawad W. Naciri, Naval Research Lab. (United States)
Ranganathan Shashidhar, Naval Research Lab. (United States)
S. K. Prasad, Raman Research Institute (India)
D. S. Shankar Rao, Raman Research Institute (India)
S. Chandrasekhar, Ctr. for Liquid Crystal Research (India)


Published in SPIE Proceedings Vol. 1911:
Liquid Crystal Materials, Devices, and Applications II
Uzi Efron; Michael D. Wand, Editor(s)

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