灵活的应变传感器基于生物平行静脉状结构用于人类运动监测
Boshuo Yin1,2, Furong Liu1,2, Qingyuan Chen1,2
1Key Laboratory of Trans-Scale Laser Manufacturing (Beijing University of Technology), Ministry of Education, Beijing 100124, China.
Sensors (Basel, Switzerland)
|January 23, 2024
概括
研究人员使用双层石墨烯复合材料开发了一种高度敏感,可拉伸的应变传感器. 这种新型传感器实现了广泛的操作范围和简单的制造,非常适合用于人类健康监测应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 生物医学工程 生物医学工程
背景情况:
- 应变传感器对于将物理刺激转化为电信号至关重要,特别是在医疗保健领域.
- 现有的传感器在灵敏度,运行范围和成本方面经常面临局限性.
- 开发用于高性能传感的先进材料仍然是一个关键的挑战.
研究的目的:
- 开发一种新型,可伸缩的应变传感器,具有增强的灵敏度和广泛的操作范围.
- 为潜在的医疗保健应用创建一个具有成本效益和简单制造的传感器.
- 探索传感器在监测人类生理信号和运动中的实用性.
主要方法:
- 使用仿生多层石墨烯-Ecoflex (MLG-Ecoflex) 基板和多层石墨烯-碳纳米管 (MLG-CNT) 复合物上层制造双层导电网络传感器.
- 传感器性能的表征,包括灵敏度 (测量因子) 和操作范围.
- 一个压力传感器的设计和测试,该传感器采用仿生静脉状结构,并堆叠了MLG-Ecoflex/MLG-CNT/MLG-Ecoflex层.
主要成果:
- 开发的可拉伸式应变传感器表现出了卓越的性能,运行范围高达580%和高度因子 (GFmax) 为1517.94.
- 一个基于堆叠多层结构的压力传感器表现出高灵敏度 (0.344 kPa-1).
- 传感器有效地监控微妙的人类运动,如发声和手势.
结论:
- 这种基于石墨烯的新型双层传感器为高性能应变和压力传感提供了有前途的解决方案.
- 简单的翻转成型制造工艺和出色的性能使这些传感器适合用于人类健康监测和人机交互.
- 这项技术在推进可穿戴电子产品和非侵入性生理监测方面具有重大潜力.
相关概念视频
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This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...