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相关概念视频

Ferromagnetism01:31

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...

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全方位拉伸式旋传感器阵列,具有稳定的巨型磁阻性能.

Lili Pan1,2, Yali Xie1, Huali Yang1

  • 1CAS Key Laboratory of Magnetic Materials and Devices & Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. China.

ACS nano
|January 30, 2025
PubMed
概括

研究人员开发了一种全方位伸展的旋传感器阵列,用于电子皮肤. 这种灵活的磁传感器在复杂的变形和高应变下保持稳定的性能,推进可穿戴磁电学.

关键词:
磁敏电子皮肤是一种磁敏电子皮肤.模块分布结构的结构是模块分布的.全方位的伸展性.传感器阵列是一系列的传感器阵列.旋转门的旋转门

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电子工程 电子工程
  • 物理 物理学 物理

背景情况:

  • 灵活的磁传感器对于电子皮肤等应用至关重要,因为它们具有可变形性和非接触式检测.
  • 现有的传感器与复杂的,全方位的人类皮肤变形作斗争,限制了它们的性能和耐用性.
  • 需要高度伸展的磁传感器,在各种压力下保持稳定的性能.

研究的目的:

  • 为了展示一个通向可拉伸的旋传感器阵列,具有高可拉伸性和稳定的性能.
  • 为了克服当前柔性磁传感器在承受复杂变形方面的局限性.
  • 为了使磁敏电子皮肤和可穿戴设备的先进应用.

主要方法:

  • 模块分布结构与液体金属的整合,以实现全向伸展性.
  • 制造一个设计能够承受复杂变形的旋传感器阵列.
  • 在各种应变条件下测试传感器性能,包括巨型磁阻比和灵敏度.

主要成果:

  • 旋传感器阵列实现了通向伸展性,最高可达86%的应变.
  • 保持了8%的稳定巨型磁阻比和0.93%/OE的最大灵敏度.
  • 经过1000多次拉伸周期,在没有疲劳的情况下表现稳定.

结论:

  • 开发的传感器阵列在复杂的变形下提供了高伸展性和稳定的磁场传感.
  • 该技术适用于磁敏电子皮肤和其他可穿戴电子应用.
  • 为下一代可伸缩和可穿戴磁铁电子提供了基础.