Journal
ADVANCED MATERIALS
Volume 32, Issue 50, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202004664
Keywords
dynamic holograms; liquid crystals; metaholographic displays; photonic sensors; stimuli‐ responsive materials
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Funding
- LGD-SNU incubation program - LG Display
- National Research Foundation (NRF) - Ministry of Science and ICT (MSIT) of the Korean government [NRF-2019R1A2C3003129, CAMM-2019M3A6B3030637, NRF-2019R1A5A8080290, NRF-2018M3D1A1058997]
- NRF grant - MSIT of the Korean government [NRF-2020R1F1A1066377]
- NRF Global Ph.D. fellowship - Ministry of Education of the Korean government [NRF-2016H1A2A1906519]
- Hyundai Motor Chung Mong-Koo Foundation
- NRF fellowship - Ministry of Education of the Korean government [NRF-2019R1A6A3A13091132]
- National Research Foundation of Korea [4199990314087, 2016H1A2A1906519, 4120200413631, 2018M3D1A1058997] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Flat optics, realized by the artificially created 2D material platform called optical metasurfaces, is currently undergoing a science-to-technology transition. However, real-time active operations of such flat optical devices remain yet unresolved. Here, liquid crystals (LCs)-integrated metaholograms for ultracompact dynamic holographic displays are proposed. The anisotropic nature of the LCs allows facile and repeatable manipulation of the polarization of light. Specifically designed (designer) LCs and efficient helicity-encoded metaholograms are combined to realize stimuli-responsive dynamic displays. The designer LC modulators are used as switches that enable a variety of external stimuli (e.g., electric field, heat, surface pressure) to operate holographic images in real-time. Such a dynamic metaholographic platform will provide a path to external stimuli-driven smart sensing and display applications such as hologram labels for temperature/pressure/touch monitoring and interactive holographic displays with haptic motion recognition.
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