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학술지 Highly Stretchable, Mechanically Stable, and Weavable Reduced Graphene Oxide Yarn with High NO2 Sensitivity for Wearable Gas Sensors
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저자
윤용주, 김도엽, 홍원기, 하동한, 전용석, 이형근
발행일
201802
출처
RSC Advances, v.8 no.14, pp.7615-7621
ISSN
2046-2069
출판사
Royal Society of Chemistry (RSC)
DOI
https://dx.doi.org/10.1039/c7ra12760j
협약과제
18JS1100, 다중 바이오마커 기반 모바일 다이어트 모니터링 기술 개발, 이대식
초록
Stretchable gas sensors are important components of wearable electronic devices used for human safety and healthcare applications. However, the current low stretchability and poor stability of the materials limit their use. Here, we report a highly stretchable, stable, and sensitive NO2 gas sensor composed of reduced graphene oxide (RGO) sheets and highly elastic commercial yarns. To achieve high stretchability and good stability, the RGO sensors were fabricated using a pre-strain strategy (strain-release assembly). The fabricated stretchable RGO gas sensors showed high NO2 sensitivity (55% at 5.0 ppm) under 200% strain and outstanding mechanical stability (even up to 5000 cycles at 400% applied strain), making them ideal for wearable electronic applications. In addition, our elastic graphene gas sensors can also be woven into fabrics and clothes for the creation of smart textiles. Finally, we successfully fabricated wearable gas-sensing wrist-bands from superelastic graphene yarns and stretchable knits to demonstrate a wearable electronic device.
KSP 제안 키워드
Gas sensing, Graphene oxide(GOS), Healthcare applications, Mechanical stability, Pre-strain, Smart textiles, Wearable electronic device, gas sensors, good stability, highly stretchable, human safety