可穿戴磁场传感器,具有低检测极限和广泛的操作范围,用于电子皮肤应用
Shengbin Li1,2,3, Yuanzhao Wu1,2, Waqas Asghar1,2,4
1CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 1, 2023
概括
这项研究引入了一种新的灵活磁场传感器,具有前所未有的七级检测范围. 这一进步显著改善了现有的灵活磁电学,用于各种应用.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 物理 物理学 物理
背景情况:
- 灵活的电子设备可以增强人类对环境的感知.
- 灵活的磁场传感器对于检测磁场变化至关重要.
- 目前的柔性磁电器缺乏同时低的检测极限和广泛的工作范围.
研究的目的:
- 开发一个灵活的磁场传感器,具有广泛的检测范围和高灵敏度.
- 克服现有的灵活磁场传感器技术的局限性.
主要方法:
- 设计了一个悬臂梁结构,采用灵活的永磁复合材料和无形磁线.
- 在无形磁线中利用巨型磁阻效应的异构性进行高场检测.
主要成果:
- 实现了22nT的低检测极限和从22nT到400mT的广泛传感范围.
- 演示了七个数量级的检测范围,这与当前技术相比是显著的改进.
结论:
- 开发的柔性磁场传感器在检测范围和灵敏度上提供了显著的改进.
- 潜在的应用包括用于导航,互动,康复和安全监控的智能可穿戴设备.
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