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- Title
Bioinspired Gradient Stretchable Aerogels for Ultrabroad‐Range‐Response Pressure‐Sensitive Wearable Electronics and High‐Efficient Separators.
- Authors
Zhang, Xiaoyu; Hu, Zhenyu; Sun, Qi; Liang, Xing; Gu, Puzhong; Huang, Jia; Zu, Guoqing
- Abstract
Broad‐range‐response pressure‐sensitive wearable electronics are urgently needed but their preparation remains a challenge. Herein, we report unprecedented bioinspired wearable electronics based on stretchable and superelastic reduced graphene oxide/polyurethane nanocomposite aerogels with gradient porous structures by a sol‐gel/hot pressing/freeze casting/ambient pressure drying strategy. The gradient structure with a hot‐pressed layer promotes strain transfer and resistance variation under high pressures, leading to an ultrabroad detection range of 1 Pa–12.6 MPa, one of the broadest ranges ever reported. They can withstand 10 000 compression cycles under 1 MPa, which can't be achieved by traditional flexible pressure sensors. They can be applied for broad‐range‐response electronic skins and monitoring various physical signals/motions and ultrahigh pressures of automobile tires. Moreover, the gradient aerogels can be used as high‐efficient gradient separators for water purification.
- Subjects
WEARABLE technology; AEROGELS; AUTOMOBILE tires; PRESSURE sensors; ELECTRONIC surveillance; HOT pressing; DENATURING gradient gel electrophoresis; MICROBIOLOGICAL aerosols
- Publication
Angewandte Chemie, 2023, Vol 135, Issue 1, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202213952