期刊
SMART MATERIALS AND STRUCTURES
卷 26, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/aa6849
关键词
carbon nanotube; human performance sensing; nanocomposite; respiration rate; temperature sensing; wearable technology
资金
- US National Science Foundation (NSF) [CMMI CAREER1253564]
- Jacobs School of Engineering, University of California-San Diego
A target application of wearable sensors is to detect human motion and to monitor physical activity for improving athletic performance and for delivering better physical therapy. In addition, measuring human vital signals (e.g., respiration rate and body temperature) provides rich information that can be used to assess a subject's physiological or psychological condition. This study aims to design a multifunctional, wearable, fabric-based sensing system. First, carbon nanotube (CNT)-based thin films were fabricated by spraying. Second, the thin films were integrated with stretchable fabrics to form the fabric sensors. Third, the strain and temperature sensing properties of sensors fabricated using different CNT concentrations were characterized. Furthermore, the sensors were demonstrated to detect human finger bending motions, so as to validate their practical strain sensing performance. Finally, to monitor human respiration, the fabric sensors were integrated with a chest band, which was directly worn by a human subject. Quantification of respiration rates were successfully achieved. Overall, the fabric sensors were characterized by advantages such as flexibility, ease of fabrication, lightweight, low-cost, noninvasiveness, and user comfort.
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