Numerical Studies of One-Dimensional Gratings of Heliconical Liquid Crystals
ORAL
Abstract
Numerical Studies of One-Dimensional Gratings of Heliconical Liquid Crystals
Sha Liu, Hao Yu, Miao Jiang, Qi-Huo Wei
Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Corresponding author: weiqh@sustech.edu.cn
In this work, we numerically study one-dimensional gratings made of heliconical liquid crystals by using finite-difference time-domain approach. In the gratings, the molecular orientations at the surface are varied periodically in one direction. In interestingly, we found that in contrast to what observed in typical cholesteric liquid crystals, the heliconical gratings exhibit two reflection bands, one corresponds to the band wavelengths of the heliconical liquid crystals, the other is at exactly twice the band wavelengths. We will present the physical mechanisms behind this phenomenon.
Key words: Heliconical liquid crystal, finite-difference time-domain
Sha Liu, Hao Yu, Miao Jiang, Qi-Huo Wei
Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Corresponding author: weiqh@sustech.edu.cn
In this work, we numerically study one-dimensional gratings made of heliconical liquid crystals by using finite-difference time-domain approach. In the gratings, the molecular orientations at the surface are varied periodically in one direction. In interestingly, we found that in contrast to what observed in typical cholesteric liquid crystals, the heliconical gratings exhibit two reflection bands, one corresponds to the band wavelengths of the heliconical liquid crystals, the other is at exactly twice the band wavelengths. We will present the physical mechanisms behind this phenomenon.
Key words: Heliconical liquid crystal, finite-difference time-domain
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Presenters
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Qi-Huo Wei
Southern University of Science and Technology, Department of Mechanical and Energy Engineering, Southern University of Science and Technology
Authors
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Sha Liu
Southern University of Science and Technology
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Qi-Huo Wei
Southern University of Science and Technology, Department of Mechanical and Energy Engineering, Southern University of Science and Technology