Fabrication and photonic applications of large-domain blue phase films

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 reflectivi...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2019, Vol.7 (31), p.946-9466
Main Authors: Yang, Jiajia, Liu, Jie, Guan, Bo, He, Wanli, Yang, Zhou, Wang, Jingxia, Ikeda, Tomiki, Jiang, Lei
Format: Article
Language:English
Subjects:
Cylinders
Domains
Fluorescent dyes
Photonic band gaps
Photonics
Photopolymerization
Self-assembly
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Summary: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. This paper presents a facile fabrication of high-quality freestanding blue phase (BP) polymer films, showing potential application in dual-wavelength lasers. It is of significance for the fabrication and application of novel BP-based optical devices.
ISSN:2050-7526
2050-7534
DOI:10.1039/c9tc02938a