A Wearable Patch Based on Flexible Porous Reduced Graphene Oxide Paper Sensor for Real-Time and Continuous Ultraviolet Radiation Monitoring
- Authors
- Lee, Hyun Joo; Hong, Won G.; Yang, Hee Yeon; Ha, Dong Han; Jun, Yongseok; Yun, Yong Ju
- Issue Date
- 3월-2022
- Publisher
- WILEY
- Keywords
- flexible ultraviolet sensor; graphene paper; porous graphene; PDMS encapsulation; reduced graphene oxide; wearable ultraviolet patch
- Citation
- ADVANCED MATERIALS TECHNOLOGIES, v.7, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED MATERIALS TECHNOLOGIES
- Volume
- 7
- Number
- 3
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/138503
- DOI
- 10.1002/admt.202100709
- ISSN
- 2365-709X
- Abstract
- Real-time and continuous monitoring of ultraviolet (UV) radiation in daily activity is critical in diverse fields ranging from personal fitness, cosmetics, to medical aspects. Here, a wearable UV monitoring patch that can be easily fixed/removed at desired locations and provide real-time and continuous UVA levels in daily life is developed. The wearable patch consists of a highly sensitive, flexible graphene sensor for UVA measurement and a multifunctional fabric patch integrated with commercial electronic components for signal processing, wireless transmission. To achieve a high sensitive UVA sensor with high flexibility and long-term stability, porous reduced graphene oxide (pRGO) papers are fabricated by simple solvent evaporation followed by thermochemical reduction. The flexible UVA sensors based on pRGO papers feature a high UVA photoresponsivity of 125 mA W-1, which is comparable to that of a commercial silicon-based UV sensor. Furthermore, the polydimethylsiloxane-encapsulated pRGO (PDMS-pRGO) sensors exhibit stable UVA photoresponse characteristics that is maintained under severe conditions, such as a large number of bending cycles, thermal heating, and high humidity. The use of wearable patches that enable real-time, wireless monitoring of personal UVA levels in various practical applications are demonstrated.
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Collections - Graduate School of Energy and Environment (KU-KIST GREEN SCHOOL) > Department of Energy and Environment > 1. Journal Articles
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