Fabrication and photonic applications of large-domain blue phase films
Fabrication and photonic applications of large-domain blue phase films
复制标题
大域蓝相薄膜的制备和光子应用
DOI：
10.1039/c9tc02938a
复制
发表时间：
2019
影响因子：
6.4
通讯作者：
Jiang Lei
中科院分区：
文献类型：
--
作者：
Yang Jiajia;Liu Jie;Guan Bo;He wanli;Yang zhou;Wang Jingxia;Ikeda Tomiki;Jiang Lei
本文提出了一种基于自组装技术制备自支撑大畴蓝相（BP）薄膜的简便方法。这种制备方法能够形成横向尺寸为230 μm的大尺度BP畴，其具有高反射率的尖锐光子带隙。此外，大畴BP结构具有良好的光学性能，可以保存后的光聚合。更重要的是，双扭转圆柱的长程周期性纳米结构可以通过透射电子显微镜直接可视化，提供了一个强大的工具，以研究在纳米尺度上的BP结构。此外，通过在大畴BP薄膜中掺杂荧光染料实现了双波长激光输出，这在BP材料中尚属首次。
Here, a facile method is put forward to fabricate freestanding, large-domain blue phase (BP) films based on self-assembly technology. This fabrication method enables the formation of BP domains with large-scale lateral dimensions of ∼230 μm, which exhibit sharp photonic bandgaps with high reflectivity. In addition, the large-domain BP structures with good optical performances can be preserved after photopolymerization. What is more, the long-range periodic nanostructures of double-twist cylinders can be directly visualized through transmission electron microscopy, providing a powerful tool to investigate BP structures at the nanoscale. Furthermore, dual-wavelength lasing is achieved by doping the large-domain BP films with fluorescent dyes, which is firstly observed in BP materials.