Journal
NANOSCALE
Volume 14, Issue 48, Pages 17921-17928Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nr05374h
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Funding
- National Key R&D Program of China [2021YFB2802300]
- National Natural Science Foundation of China [62075093, 62211530039]
- Guangdong Innovative and Entrepreneurial Research Team Program [2017ZT07C071]
- Natural Science Foundation of Guangdong Province [2019A1515110864]
- Shenzhen Science and Technology Innovation Commission [JCYJ20180305180635082, JCYJ20170817111349280, GJHZ20180928155207206]
- Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University [KJS2132]
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This paper proposes an electrically programmable metasurface enabled by dual-frequency cholesteric liquid crystals, which can achieve polarization multiplexing and demonstrate multiple optical effects.
Metasurfaces can enable polarization multiplexing of light so as to carry more information. Specific polarized light necessitates bulk polarizers and waveplates, which significantly increases the form size of metasurface devices. We propose an electrically programmable metasurface enabled by dual-frequency cholesteric liquid crystals (DF-CLCs) for simultaneous near- and far-field displays. Moreover, the integrated device can be electrically programmed to demonstrate 6 different optical images by engineering the DF-CLCs with frequency-modulated voltage pulses. Such programmable metasurfaces are potentially useful for many applications including information storage, displays, anti-counterfeiting, and so on.
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