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Proceedings Article

Ferroelectric liquid crystalline polymers with large pyroelectric coefficients for infrared detectors

[+] Author Affiliations
J. Ruth, Banahalli R. Ratna, Jawad W. Naciri, Ranganathan Shashidhar

Naval Research Lab. (USA)

S. K. Prasad, D. S. Shankar Rao

Raman Research Institute (India)

S. Chandrasekhar

Ctr. for Liquid Crystal Research (India)

Proc. SPIE 1911, Liquid Crystal Materials, Devices, and Applications II, 104 (August 13, 1993); doi:10.1117/12.151209
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From Conference Volume 1911

  • Liquid Crystal Materials, Devices, and Applications II
  • Uzi Efron; Michael D. Wand
  • San Jose, CA | January 31, 1993

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.

© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

J. Ruth ; Banahalli R. Ratna ; Jawad W. Naciri ; Ranganathan Shashidhar ; S. K. Prasad, et al.
"Ferroelectric liquid crystalline polymers with large pyroelectric coefficients for infrared detectors", Proc. SPIE 1911, Liquid Crystal Materials, Devices, and Applications II, 104 (August 13, 1993); doi:10.1117/12.151209; http://dx.doi.org/10.1117/12.151209


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