期刊
SMALL
卷 17, 期 31, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202100542
关键词
contact-noncontact sensing; electronic skin; graphene; nacre-mimetic structure; silver nanowires
类别
资金
- National Natural Science Foundation of China [51773183, U1804133]
- National Natural Science Foundation of China-Henan Province [U1604253]
- Henan Province University Innovation Talents Support Program [20HASTIT001]
- Innovation Team of Colleges and Universities in Henan Province [20IRTSTHN002]
The electronic skin developed in this study, inspired by the structure of nacre, exhibits exceptional strain response performance with a tunable detection range, ultra-low response limit, high sensitivity, fast response time, and excellent stability. This innovative e-skin can accurately monitor full-range human body motions, detect relative humidity, and exhibit excellent performance in noncontact sensing, showing promising applications in motion monitoring and contact-noncontact human machine interaction.
Electronic skins (e-skins) have attracted great attention for their applications in disease diagnostics, soft robots, and human-machine interaction. The integration of high sensitivity, low detection limit, large stretchability, and multiple stimulus response capacity into a single e-skin remains an enormous challenge. Herein, inspired by the structure of nacre, an ultra-stretchable and multifunctional e-skin with tunable strain detection range based on nacre-mimetic multi-layered silver nanowires /reduced graphene oxide /thermoplastic polyurethane mats is fabricated. The e-skin possesses extraordinary strain response performance with a tunable detection range (50 to 200% strain), an ultralow response limit (0.1% strain), a high sensitivity (gauge factor up to 1902.5), a fast response time (20 ms), and an excellent stability (stretching/releasing test of 11 000 cycles). These excellent response behaviors enable the e-skin to accurately monitor full-range human body motions. Additionally, the e-skin can detect relative humidity quickly and sensitively through a reversible physical adsorption/desorption of water vapor, and the assembled e-skin array exhibits excellent performance in noncontact sensing. The tunable and multifunctional e-skins show promising applications in motion monitoring and contact-noncontact human machine interaction.
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