Large three-dimensional photonic crystals based on monocrystalline liquid crystal blue phases

被引：113

作者：

Chen, Chun-Wei ^{[1
,2
]}

Hou, Chien-Tsung ^{[1
]}

Li, Cheng-Chang ^{[1
]}

Jau, Hung-Chang ^{[1
]}

Wang, Chun-Ta ^{[1
]}

Hong, Ching-Lang ^{[1
]}

Guo, Duan-Yi ^{[1
]}

Wang, Cheng-Yu ^{[1
,2
]}

Chiang, Sheng-Ping ^{[1
]}

Bunning, Timothy J. ^{[3
]}

Khoo, Iam-Choon ^{[2
]}

Lin, Tsung-Hsien ^{[1
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Photon, Kaohsiung 80424, Taiwan

[2] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

[3] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA

来源：

NATURE COMMUNICATIONS | 2017年 / 8卷

关键词：

NANOSTRUCTURES; HYSTERESIS; LIGHT; LASER; TWIST;

D O I：

10.1038/s41467-017-00822-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Although there have been intense efforts to fabricate large three-dimensional photonic crystals in order to realize their full potential, the technologies developed so far are still beset with various material processing and cost issues. Conventional top-down fabrications are costly and time-consuming, whereas natural self-assembly and bottom-up fabrications often result in high defect density and limited dimensions. Here we report the fabrication of extraordinarily large monocrystalline photonic crystals by controlling the self-assembly processes which occur in unique phases of liquid crystals that exhibit three-dimensional photonic-crystalline properties called liquid-crystal blue phases. In particular, we have developed a gradient-temperature technique that enables three-dimensional photonic crystals to grow to lateral dimensions of similar to 1 cm (similar to 30,000 of unit cells) and thickness of similar to 100 mu m (similar to 300 unit cells). These giant single crystals exhibit extraordinarily sharp photonic bandgaps with high reflectivity, long-range periodicity in all dimensions and well-defined lattice orientation.

引用

页数：8

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