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학술지 High Durability and Waterproofing rGO/SWCNT-Fabric-Based Multifunctional Sensors for Human-Motion Detection
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김성준, 송우석, 이윤식, 민복기, 슈브라 몬달, 안기석, 최춘기
ACS Applied Materials & Interfaces, v.10 no.4, pp.3921-3928
American Chemical Society(ACS)
17ZB1300, 원자수준 물성제어를 통한 신개념 그래핀 소자 연구, 최춘기
Wearable strain-pressure sensors for detecting electrical signals generated by human activities are being widely investigated because of their diverse potential applications, from observing human motion to health monitoring. In this study, we fabricated reduced graphene oxide (rGO)/single-wall carbon nanotube (SWCNT) hybrid fabric-based strain-pressure sensors using a simple solution process. The structural and chemical properties of the rGO/SWCNT fabrics were characterized using scanning electron microscopy (SEM), Raman, and X-ray photoelectron spectroscopy (XPS). Complex networks containing rGO and SWCNTs were homogeneously formed on the cotton fabric. The sensing performance of the devices was evaluated by measuring the effects of bending strain and pressure. When the CNT content was increased, the change in relative resistance decreased, while durability was significantly improved. The rGO/SWCNT (0.04 wt %) fabric sensor showed particularly high mechanical stability and flexibility during 100 000 bending tests at the extremely small bending radius of 3.5 mm (11.6% bending strain). Moreover, the rGO/SWCNT fabric device exhibited excellent water resistant properties after 10 washing tests due to its hydrophobic nature. Finally, we demonstrated a fabric-sensor-based motion glove and confirmed its practical applicability.
KSP 제안 키워드
3.5 mm, Carbon nano-tube(CNT), Complex Networks(CN), Cotton fabric, Electrical signal, Fabric sensor, Graphene oxide(GOS), Health monitoring, Human motion, Hydrophobic nature, Mechanical stability