Bio-inspired thermal-responsive inverse opal films with dual structural colors based on liquid crystal elastomer

Bio-inspired thermal-responsive inverse opal films with dual structural colors based on liquid crystal elastomer
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基于液晶弹性体的双结构色仿生热响应反蛋白石薄膜

DOI:
10.1039/c5tc00548e
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发表时间:
2015-04
影响因子:
6.4
通讯作者:
Wei Jie
Wei Jie
中科院分区:
材料科学2区
文献类型:
--
作者:
Xing Huihui;Li Jun;Guo Jinbao;Wei Jie

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我们开发了一种基于液晶弹性体(LCE)的具有双结构色的生物启发热响应微图案化反蛋白石膜。在本文中,通过将LC前体渗透到二氧化硅蛋白石光子晶体模板中,随后进行UV照射,然后去除二氧化硅球体来制造反蛋白石膜。此外,具有双结构色的微图案化反蛋白石薄膜已经通过两步光聚合技术结合直流电场制备。直流电场用于在第二光聚合阶段调节二氧化硅蛋白石模板的晶格空间。此外,由于热诱导的LCE分子取向的变化,具有双结构色的LCE反蛋白石薄膜的光子带隙可以通过温度可逆地切换。这种制备具有微图案的双色反蛋白石的方法为显示和光子应用的发展开辟了一条新的途径。
We have developed a bio-inspired thermal-responsive micropatterned inverse opal film with dual structural colors based on liquid crystal elastomers (LCEs). Herein, inverse opal films are fabricated by infiltrating the LC precursor into silica opal photonic crystal templates followed by UV irradiation and then removing the silica spheres. Furthermore, the micropatterned inverse opal films with dual structural colors have been fabricated by a two-step photo-polymerization technique combining a DC electric field. The DC electric field is used to tune the lattice space of the silica opal templates at the second photo-polymerization stage. In addition, the photonic band gaps of the LCE inverse opal films with dual structural colors can be reversibly switched by temperature because of the thermally induced molecular orientation change of the LCEs. This approach to create bi-colored inverse opals with micropatterns opens up a new way to the development of display and photonic applications.
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