期刊
ADVANCED ELECTRONIC MATERIALS
卷 6, 期 1, 页码 -出版社
WILEY
DOI: 10.1002/aelm.201900934
关键词
hydrogels; pressure sensors; relative capacitance change; relative resistance change; strain sensors
资金
- national first-class discipline program of Light Industry Technology and Engineering [LITE2018-21]
- Key Laboratory of Eco-textiles, Ministry of Education - Fundamental Research Funds for the Central Universities [JUSRP51907A]
- National Natural Science Foundation of China [51803078]
- Natural Science Foundation of Jiangsu Province [BK20180628]
- 111 Project [B17021]
- Postgraduate Research AMP
- Practice Innovation Program of Jiangnan University [JNKY19_023]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions [PPZY2015B147]
Flexible and wearable sensors are fast establishing their status as go-to devices for human motion detection. A bacterial cellulose-reinforced hydrogel is fabricated through a facile and scalable freezing-thawing process with Ca2+ crosslinking for strain and pressure sensing. Polyvinyl alcohol/sodium alginate/bacterial cellulose/modified carbon nanotube and carbon black hydrogels assembled as piezoresistive strain sensors and capacitive pressure sensors exhibit an excellent synchronicity between mechanical load and electrical signal, good stability under various strains and pressures, an ability to distinguish strains and pressures, and extraordinary cycling repeatability and durability during loading/unloading process. Moreover, the dual-mode sensor can be used for monitoring human motion, such as limb movement, walking, and grasping weights, suggesting its great potential in flexible and wearable devices.
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