Stimuli‐Responsive Dynamic Metaholographic Displays with Designer Liquid Crystal Modulators

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 metahologr...

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Vydáno v:Advanced materials (Weinheim) Ročník 32; číslo 50; s. e2004664 - n/a
Hlavní autoři: Kim, Inki, Ansari, Muhammad Afnan, Mehmood, Muhammad Qasim, Kim, Won‐Sik, Jang, Jaehyuck, Zubair, Muhammad, Kim, Young‐Ki, Rho, Junsuk
Médium: Journal Article
Jazyk:angličtina
Vydáno: Germany Wiley Subscription Services, Inc 01.12.2020
Témata:
Displays
dynamic holograms
Electric fields
External pressure
Helicity
Holography
Liquid crystals
Materials science
metaholographic displays
Modulators
Motion perception
photonic sensors
Pressure
Stimuli
stimuli‐responsive materials
Switches
Two dimensional materials
photonic sensors
stimuli-responsive materials
liquid crystals
dynamic holograms
metaholographic displays
ISSN:0935-9648, 1521-4095, 1521-4095
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Popis
Shrnutí: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. Liquid crystal (LC)‐based metamaterial devices, which can sense targeted stimuli such as electric‐field, temperature and pressure, and report them optically by displaying corresponding holograms, are demonstrated. The demonstrated systems enable a variety of applications like hologram labels that indicate freshness of temperature‐sensitive products during storage or transport and interactive holographic displays with touch sensing or motion recognition.
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ISSN:0935-9648
1521-4095
1521-4095
DOI:10.1002/adma.202004664