材料科学
石墨烯
数码产品
纳米复合材料
紧迫的
可穿戴技术
纳米技术
氧化物
压力传感器
图层(电子)
可穿戴计算机
气凝胶
复合材料
机械工程
计算机科学
电气工程
嵌入式系统
冶金
工程类
作者
Xiaoyu Zhang,Zhenyu Hu,Qi Sun,Xing Liang,Puzhong Gu,Jia Huang,Guoqing Zu
标识
DOI:10.1002/anie.202213952
摘要
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.
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