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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. © 1998 American Institute of Physics.
Panarin, Yu. P. et al. 1998. The investigation of the relaxation process in antiferroelectric liquid crystals by electro-optic spectroscopy. Applied Physics Letters , vol. 72, no. 14, pg. 1667-1669. doi:10.1063/1.121147