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Cited 168 time in webofscience Cited 144 time in scopus
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Holographic metasurface gas sensors for instantaneous visual alarms SCIE SCOPUS

Title
Holographic metasurface gas sensors for instantaneous visual alarms
Authors
KIM, INKIKIM, WONSIKKim, KwanAnsari, Muhammad AfnanMehmood, Muhammad QasimBadloe, TrevonKim, YeseulGwak, JunhoLee, HeonKIM, YOUNGKIRHO, JUNSUK
Date Issued
2021-04
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Abstract
The rapid detection of biological and chemical substances in real time is particularly important for public health and environmental monitoring and in the military sector. If the process of substance detection to visual reporting can be implemented into a single miniaturized sensor, there could be a profound impact on practical applications. Here, we propose a compact sensor platform that integrates liquid crystals (LCs) and holographic metasurfaces to autonomously sense the existence of a volatile gas and provide an immediate visual holographic alarm. By combining the advantage of the rapid responses to gases realized by LCs with the compactness of holographic metasurfaces, we develop ultracompact gas sensors without additional complex instruments or machinery to report the visual information of gas detection. To prove the applicability of the compact sensors, we demonstrate a metasurface-integrated gas sensor on safety goggles via a one-step nanocasting process that is attachable to flat, curved, and flexible surfaces.
URI
https://oasis.postech.ac.kr/handle/2014.oak/105124
DOI
10.1126/sciadv.abe9943
ISSN
2375-2548
Article Type
Article
Citation
SCIENCE ADVANCES, vol. 7, no. 15, 2021-04
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노준석RHO, JUNSUK
Dept of Mechanical Enginrg
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