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Molecular Crystals and Liquid Crystals Volume 646, 2017 - Issue 1: Proceedings of the 26th International Liquid Crystals Conference (ILCC 2016)
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Original Articles

The electro-optical properties of doping toluene in inverted twisted nematic liquid crystals

Yen-Te ChiangInstitute of Applied Physics, National Taiwan University, Taipei, Taiwan
,
Tsu-Ruey ChouDepartment of Physics, National Taiwan University, Taipei, Taiwan
,
Szu-Hua ChenDepartment of Physics, National Taiwan University, Taipei, Taiwan
&
Chih-Yu ChaoInstitute of Applied Physics, National Taiwan University, Taipei, Taiwan;Department of Physics, National Taiwan University, Taipei, Taiwan;Molecular Imaging Center, National Taiwan University, Taipei, TaiwanCorrespondence[email protected]
Pages 74-80 | Published online: 23 May 2017
 
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ABSTRACT

The optimized electro-optical (EO) properties of inverse twisted nematic (ITN) liquid crystals (LCs) were demonstrated by utilizing liquid doping technique. ITN LC display is a driving system having 90° twisted structure on homeotropic polyimide with negative LCs. Toluene was chosen as dopants and doped into ITN LCs which successfully improved the driving voltage and response time of ITN LCs. The main reason of these EO properties enhancement is that toluene molecules penetrated between LC molecules and decreased the visco-elastic coefficient of LCs. The simplicity of liquid doping technique shows the potential to developments of a wide range of applications.

Funding

This work was supported by National Taiwan University, Ministry of Science and Technology, and Ministry of Education of the Republic of China.

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