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

Jaehyuck Jang, Kyungnam Kang, Niloufar Raeis-Hosseini, Aizhan Ismukhanova, Heonyeong Jeong, Chunghwan Jung, Byeongsu Kim, Jung Yong Lee, Inkyu Park, Junsuk Rho

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)

Abstract

A tunable Fabry–Pérot 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.

Original languageEnglish
Article number1901932
JournalAdvanced Optical Materials
Volume8
Issue number9
DOIs
Publication statusPublished - 2020 May 1

Bibliographical note

Funding Information:
This work was financially supported from Samsung Research Funding & Incubation Center of Samsung Electronics (SRFC-IT1901-05). I.P. acknowledges the National Research Foundation (NRF) grant (NRF-2015R1A5A1037668) funded by the Ministry of Science and ICT (MSIT), Korea. J.J. acknowledges a fellowship from Hyundai Motor Chung Mong-Koo Foundation and the NRF fellowship (NRF-2019R1A6A3A13091132) by Ministry of Education, Korea. A.I. acknowledges the KGSP fellowship funded by the Ministry of Education, Korea.

Funding Information:
This work was financially supported from Samsung Research Funding & Incubation Center of Samsung Electronics (SRFC‐IT1901‐05). I.P. acknowledges the National Research Foundation (NRF) grant (NRF‐2015R1A5A1037668) funded by the Ministry of Science and ICT (MSIT), Korea. J.J. acknowledges a fellowship from Hyundai Motor Foundation and the NRF fellowship (NRF‐2019R1A6A3A13091132) by Ministry of Education, Korea. A.I. acknowledges the KGSP fellowship funded by the Ministry of Education, Korea. Chung Mong‐Koo

Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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