An electrically light-transmittance-controllable film with a low-driving voltage from a coexistent system of polymer-dispersed and polymer-stabilised cholesteric liquid crystals
An electrically light-transmittance-controllable film with a low-driving voltage from a coexistent system of polymer-dispersed and polymer-stabilised cholesteric liquid crystals
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一种由聚合物分散和聚合物稳定的胆甾型液晶共存系统制成的具有低驱动电压的电透光率可控薄膜
DOI：
10.1080/02678292.2018.1501820
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发表时间：
2018-07
期刊：
影响因子：
2.2
通讯作者：
Yang Huai
中科院分区：
文献类型：
--
作者：
Guo Shumeng;Liang Xiao;Zhang Huimin;Shen Wenbo;Li Chunxin;Wang Xiao;Zhang Cuihong;Zhang Lanying;Yang Huai
摘要聚合物分散液晶（PDLC）薄膜已成功应用于智能窗、建筑隔断和投影屏幕领域。然而，现有的PDLC膜的高驱动电压不仅导致严重的安全问题，而且导致巨大的能量消耗。尽管研究了几十年，但是，由于液晶（LC）的运动受到PDLC的多孔聚合物结构的极大限制，因此没有实现降低驱动电压的切实改进。本文采用一种新型聚合物分散稳定的PDLC体系制备了一种具有前所未有的低驱动电压（比典型PDLC薄膜低50%以上）的电致透光可控薄膜。研究了手性掺杂量对薄膜电光性能的影响。图形摘要
ABSTRACT Polymer-dispersed liquid crystal (PDLC) films have been successfully applied in the field of smart windows, building partitions and projection screens. However, the high-driving voltage of the state-of-the-art PDLC films not only results in serious security problems but also leads to huge energy consumptions. Although studied for decades, however, no tangible improvements of reducing the driving voltage have been achieved due to the movements liquid crystals (LCs) are greatly confined by the porous polymer structures of PDLCs. In this paper, an electrically light-transmittance-controllable film with an unprecedented low-driving voltage (more than 50% lower than that of the typical PDLC films) was prepared from a new polymer dispersed and stabilised cholesteric LC system. Also, the effects of the amounts of chiral dopants on the electro-optical properties were studied. Graphical Abstract
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