Reconfiguration of three-dimensional liquid-crystalline photonic crystals by electrostriction

被引:93
|
作者
Guo, Duan-Yi [1 ]
Chen, Chun-Wei [2 ]
Li, Cheng-Chang [1 ]
Jau, Hung-Chang [1 ]
Lin, Keng-Hsien [1 ]
Feng, Ting-Mao [1 ]
Wang, Chun-Ta [1 ]
Bunning, Timothy J. [3 ]
Khoo, Iam Choon [2 ]
Lin, Tsung-Hsien [1 ]
机构
[1] Natl Sun Yat Sen Univ, Dept Photon, Kaohsiung, 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 USA
关键词
BLUE PHASES; KOSSEL DIAGRAMS; REFLECTIONS; DYNAMICS; LATTICE; SURFACE;
D O I
10.1038/s41563-019-0512-3
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Natural self-assembled three-dimensional photonic crystals such as blue-phase liquid crystals typically assume cubic lattice structures. Nonetheless, blue-phase liquid crystals with distinct crystal symmetries and thus band structures will be advantageous for optical applications. Here we use repetitive electrical pulses to reconfigure blue-phase liquid crystals into stable orthorhombic and tetragonal lattices. This approach, termed repetitively applied field, allows the system to relax between each pulse, gradually transforming the initial cubic lattice into various intermediate metastable states until a stable non-cubic crystal is achieved. We show that this technique is suitable for engineering non-cubic lattices with tailored photonic bandgaps, associated dispersion and band structure across the entire visible spectrum in blue-phase liquid crystals with distinct composition and initial crystal orientation. These field-free blue-phase liquid crystals exhibit large electro-optic responses and can be polymer-stabilized to have a wide operating temperature range and submillisecond response speed, which are promising properties for information display, electro-optics, nonlinear optics, microlasers and biosensing applications.
引用
收藏
页码:94 / +
页数:9
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