상세정보
학술지
Highly Stretchable, Mechanically Stable, and Weavable Reduced Graphene Oxide Yarn with High NO2 Sensitivity for Wearable Gas Sensors
- 발행일
- 201802
- 출처
- RSC Advances, v.8 no.14, pp.7615-7621
- ISSN
- 2046-2069
- 출판사
- Royal Society of Chemistry (RSC)
- 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