A switchable optical diffuser based on a polymer/nematic liquid crystal composite film with transient polymer balls-networks microstructure
A switchable optical diffuser based on a polymer/nematic liquid crystal composite film with transient polymer balls-networks microstructure
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一种基于瞬态聚合物球网络微结构的聚合物/向列液晶复合膜的可切换光学扩散器
DOI：
10.1080/02678292.2019.1616227
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发表时间：
2019-05
期刊：
影响因子：
2.2
通讯作者：
Zhang Lanying
中科院分区：
文献类型：
--
作者：
Zhou Le;Han Cheng;Saeed Mohsin Hassan;Zhang Cuihong;Zhang Lanying
摘要随着多功能液晶显示器（LCD）的不断发展，多功能光学扩散器受到了越来越多的关注。本论文制备了基于聚合物/液晶复合膜中的瞬态聚合物球网络的可开关光漫射体，系统研究了硫醇含量、固化时间、液晶含量和光引发剂含量对聚合物微结构和光漫射体光学性能的影响。具有瞬态聚合物球网络微结构的光学扩散器在其关闭状态下实现了高透射率（96.42%）、高雾度（90.49%）、优异的光学扩散能力和150°（从-75 °到75°）的宽视角。通过施加40.0V的电场，光学扩散器的视角变得更窄（从-60 °到60°），这在可调视角器件和其他电光器件中具有很大的应用。图形摘要液晶/聚合物复合薄膜中的瞬态聚合物球网络微结构不仅为光学漫射器提供了高透射率和高雾度，而且由于特殊的结构，光学漫射器还可以通过电场来切换。此外，通过烯-硫醇点击反应控制聚合物球网络的瞬时形态，在液晶/聚合物复合膜的应用中具有巨大的潜力。
ABSTRACT With the increasing development of multifunction liquid crystal displays (LCDs), multifunction optical diffusers have attracted more attention. In this work, switchable optical diffusers based on the transient polymer balls-networks in polymer/nematic liquid crystal composite films have been prepared and investigated, and the effects of thiol content, curing time, LC content and photo-initiator content on the polymer microstructures and optical properties of optical diffusers are systematically studied. An optical diffuser with the transient polymer balls-networks microstructure has achieved the high transmission (96.42%), high haze (90.49%), excellent optical diffusing ability and wide viewing angle of 150° (from −75° to 75°) on its off state. By the application of electric field of 40.0 voltage, the viewing angle of the optical diffuser turns to be narrower (from −60° to 60°), which gives great applications in tunable viewing angle devices and other electric optical devices. Graphical abstract The transient polymer balls-networks microstructure in the LCs/polymer composite films not only provides the optical diffuser with high transmission and high haze, but the optical diffuser is also switched by the electric field due to the special structure. Additionally, the transient polymer balls-networks morphology is controlled via ene-thiol click reaction, which has great potential in the applications of LCs/polymer composite films.
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影响因子：
17.1
作者：
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通讯作者：
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影响因子：
3.9
作者：
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Butt H
影响因子：
3.9
作者：
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通讯作者：
Zhang, Lanying
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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