一种基于协同的三维导电网络的高伸展性纤维,用于广泛的应变传感
Wei Shi1, Xing Yang1, Langhuan Lei1
1Health Management Research Institute, People's Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences Nanning 530021 People's Republic of China liwei2186gxqyy@163.com jianguansuo2024YJR@163.com.
Nanoscale advances
|December 6, 2024
概括
这项研究通过将银纳米粒子 (AgNPs) 集成到多壁碳纳米管/石墨烯/热塑性聚氨 (MWCNT/GE/TPU) 复合材料中,开发了一种高导电性和可拉伸的纤维应变传感器. 这种新型传感器具有出色的耐用性和高灵敏度,可实时监测人类生理信号和身体运动.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 可穿戴电子设备的电子产品
背景情况:
- 纤维拉伸传感器对于可穿戴电子产品至关重要,因为它们的灵活性和轻量级.
- 现有的传感器在拉伸时受损导电性,这对高性能构成了挑战.
- 在纤维应变传感器中实现高导电性和伸展性仍然是一个重大障碍.
研究的目的:
- 为了制造一个带有增强导电性和伸展性的纤维应变传感器.
- 为了克服传统纤维应变传感器中导电性降解的局限性.
- 开发一种能够实时监测生理信号和身体运动的传感器.
主要方法:
- 银纳米颗粒 (AgNPs) 集成到多壁碳纳米管/石墨烯/热塑性聚氨 (MWCNT/GE/TPU) 复合纤维中.
- 利用MWCNT/GE层的道效应来维持压力下的导电路径.
- 在3D导电网络中利用协同效应来提高性能.
主要成果:
- 实现了高导电性 (116 S m−1) 和广泛的工作范围 (高达600%).
- 经过8000次拉伸释放周期,证明了出色的耐用性.
- 由于在高菌株 (500-600%) 的AgNP层中发生裂纹传播,表现出高灵敏度 (测量系数为545).
结论:
- 开发的AgNPs/MWCNT/GE/TPU纤维应变传感器为高性能可穿戴设备提供了一个有前途的解决方案.
- 传感器在巨大的压力下保持导电性和灵敏性的能力,使人类生理信号和身体运动的实时监控成为可能.
- 这一进步有助于智能织品和下一代可穿戴电子设备的发展.
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