Affiliation:
1. Southern University of Science and Technology
2. Université de Technologie de Troyes & CNRS ERL
3. Harbin Institute of Technology
4. Changchun Institute of Optics
Abstract
Actively tunable or reconfigurable structural colors are highly promising in future development for high resolution imaging and displaying applications. To this end, we demonstrate switchable structural colors covering the entire visible range by integrating aluminum nanoaperture arrays with nematic liquid crystals. The geometrically anisotropic design of the nanoapertures provides strong polarization-dependent coloration. By overlaying a nematic liquid crystal layer, we further demonstrate switchable ability of the structural colors by either changing the polarization of the incident light or applying an external voltage. The switchable structural colors have a fast response time of 28 ms at a driving voltage of 6.5 V. Furthermore, colorful patterns are demonstrated by coding the colors with various dimensions of nanoaperture arrays with dual switching modes. Our proposed technique in this work provides a dual-mode switchable structural colors, which is highly promising for polarimetric displays, imaging sensors, and visual cryptography.
Funder
National Natural Science Foundation of China
Guangdong Province Introduction of Innovative R&D Team
Natural Science Foundation of Guangdong Province
Science, Technology and Innovation Commission of Shenzhen Municipality
Open Fund of State Key Laboratory of Applied Optics
Subject
Atomic and Molecular Physics, and Optics
Cited by
6 articles.
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