Self-Powered Humidity Sensor Using Chitosan-Based Plasmonic Metal-Hydrogel-Metal Filters

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A tunable Fabry-Perot resonator is realized using metal-insulator-metal structure, in which the insulator is chitosan hydrogel. The chitosan swells in response to changes in relative humidity; this change affects transmissive structural color of the multilayer structure. This tunable resonator is utilized for a humidity sensor combined with a photovoltaic cell. The change in current through the photovoltaic cell provides rapid precise measurement of relative humidity, and the change in color of the multilayer provides an approximate, remotely-readable estimate. The response requires no power, so the device has numerous sensing applications.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2020-05
Language
English
Article Type
Article
Citation

ADVANCED OPTICAL MATERIALS, v.8, no.9, pp.1901932

ISSN
2195-1071
DOI
10.1002/adom.201901932
URI
http://hdl.handle.net/10203/276694
Appears in Collection
ME-Journal Papers(저널논문)
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