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- Valyukh, Iryna, 1971-, et al.
(author)
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Characteristic functions for uniformly twisted birefringent media
- 2007
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In: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 102:6, s. 063110-1-063110-7
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Journal article (peer-reviewed)abstract
- We present two functions for characterization of birefringent media with application to twisted nematic liquid crystal (LC) cells in the field off state. The first function is for reflective LC cells and the second is for transmissive LC cells. Based on the Stockes formalism, it is shown that these functions describe the ability of a layer of the twisted birefringent medium to change polarization of the output light and are invariant to the layer orientation. The characteristic functions are found in simple procedures and can be used for simultaneous determination of retardation, its wavelength dispersion, and twist angle, as well as for solving optimization problems.
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2. |
- Valyukh, Iryna, 1972-, et al.
(author)
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Theoretical study of the optical properties of low voltage stacked cholesteric liquid-crystal displays
- 2004
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In: Asia Display/IMID'04, South Korea. ; , s. 202-204
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Conference paper (peer-reviewed)abstract
- We study theoretically optical properties of thin layered stacked monochrome cholesteric liquid-crystal displays. Thin thickness of the layers (~1 µm) allows us appreciably to reduce driving voltage and use such displays in smart cards. Good selective reflection is achieved due to stacked structure. Dependence of the reflectivity of this type of displays on the quality of the layers, their thickness, and liquid crystal birefringence is investigated.
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