Journal
SENSORS AND ACTUATORS A-PHYSICAL
Volume 306, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2020.111959
Keywords
MWCNTs/PDMS microspheres; Flexible strain sensor; Human motion detection
Funding
- NSFC-Shenzhen Robot Jointed Funding [U1613215]
- TSV 3D Integrated Micro/Nanosystem Lab [ZDSYS201802061805105]
- NSFC-Guangdong Jointed Funding [U1601202]
- National Natural Science Foundation of China [61904191]
- China Postdoctoral Science Foundation [2018M640840]
- National Key R&D Project from Minister of Science and Technology of China [2017ZX02519]
- Science and Technology Service Network Initiative of Chinese Academy of Sciences [KFJ-STS-SCYD-211]
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In this paper, a novel method for the preparation of flexible strain sensors based on multi-walled carbon nanotubes/polydimethylsiloxane (MWCNTs/PDMS) microspheres (MSs) is proposed. The conductive and elastic MWCNTs/PDMS MSs were prepared by the oil-in-water Pickering emulsion mechanism at room temperature which served as the sensing materials. After being covered with the PDMS matrix, the flexible strain sensor was obtained and it exhibited high conductivity of 157.64 Omega. cm, high strain range of more than 40 %, high sensitivity (GF = 7.22), and high stability (>500 stretch and release cycles). Besides, the as-prepared strain sensor successfully recognized different finger gestures, and the movements of wrists, elbows and knees, which proved the sensor's application prospects in the fields of human motion detection, electronic skins of bionic robots and human-machine interfaces, etc. (C) 2020 Elsevier B.V. All rights reserved.
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