Journal
SMART MATERIALS AND STRUCTURES
Volume 26, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/aa79c3
Keywords
stretchable strain sensor; wearable electronics; human-activity monitoring; synergistic conductive network; single-walled carbon nanotube; carbon black
Funding
- National Natural Science Foundation of China [61471155, 61673369]
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Flexible, stretchable, and wearable strain sensors have attracted significant attention for their potential applications in human movement detection and recognition. Here, we report a highly stretchable and flexible strain sensor based on a single-walled carbon nanotube (SWCNTs)/carbon black (CB) synergistic conductive network. The fabrication, synergistic conductive mechanism, and characterization of the sandwich-structured strain sensor were investigated. The experimental results show that the device exhibits high stretchability (120%), excellent flexibility, fast response (similar to 60 ms), temperature independence, and superior stability and reproducibility during similar to 1100 stretching/releasing cycles. Furthermore, human activities such as the bending of a finger or elbow and gestures were monitored and recognized based on the strain sensor, indicating that the stretchable strain sensor based on the SWCNTs/CB synergistic conductive network could have promising applications in flexible and wearable devices for human motion monitoring.
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