Structure of Twisted States in Ferroelectric Liquid Crystals Studied by Microspectrophotometry and Numerical Calculations

Structure of Twisted States in Ferroelectric Liquid Crystals Studied by Microspectrophotometry and Numerical Calculations

The transmittance spectra of twisted states of surface stabilized ferroelectric liquid crystal cells were measured under a polarizing optical microscope. It was found that the two twisted states give different spectra, as expected by an apparent color difference. There were two cases; in one case th...

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Veröffentlicht in:Japanese Journal of Applied Physics 1988-01, Vol.27 (1R), p.8
Hauptverfasser: Hiji, Naoki, Ouchi, Yukio, Takezoe, Hideo, Fukuda, Atsuo
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container_title Japanese Journal of Applied Physics
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creator Hiji, Naoki
Ouchi, Yukio
Takezoe, Hideo
Fukuda, Atsuo
description The transmittance spectra of twisted states of surface stabilized ferroelectric liquid crystal cells were measured under a polarizing optical microscope. It was found that the two twisted states give different spectra, as expected by an apparent color difference. There were two cases; in one case the two spectra interchange by rotating a cell, while in the other case the two spectra do not interchange. We could simulate both cases by numerical calculations of the spectra using a smectic layer bend model. The spectral interchange could be analytically explained on the basis of the Jones retardation matrix method. A simple method for judging the condition of the interchange is proposed.
doi_str_mv 10.1143/JJAP.27.8
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title Structure of Twisted States in Ferroelectric Liquid Crystals Studied by Microspectrophotometry and Numerical Calculations
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