The investigation of the relaxation processes in antiferroelectric liquid crystals by electro-optic spectroscopy

The investigation of the relaxation processes in antiferroelectric liquid crystals by electro-optic spectroscopy

Electrooptic spectroscopy of an antiferroelectric liquid crystal is carried out over a range of frequencies from 1 Hz to 100 kHz. In the antiferroelectric SmCA phase two relaxation processes are found, one at the fundamental frequency of a mode and the second at twice the frequency of a different mo...

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Veröffentlicht in:Applied physics letters 1998-04, Vol.72 (14), p.1667-1669
Hauptverfasser: Panarin, Yu. P., Kalinovskaya, O., Vij, J. K.
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creator Panarin, Yu. P.
Kalinovskaya, O.
Vij, J. K.
description Electrooptic spectroscopy of an antiferroelectric liquid crystal is carried out over a range of frequencies from 1 Hz to 100 kHz. In the antiferroelectric SmCA phase two relaxation processes are found, one at the fundamental frequency of a mode and the second at twice the frequency of a different mode. A comparison of the results of the electro-optic spectroscopy with a theoretical study of the motion of the director of an antiferroelectric helix subject to a weak alternating field enables a determination of the origin of the relaxation processes in antiferroelectric phases.
doi_str_mv 10.1063/1.121147
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title The investigation of the relaxation processes in antiferroelectric liquid crystals by electro-optic spectroscopy
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