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相关概念视频

Ferromagnetism01:31

Ferromagnetism

2.5K
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...
2.5K
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

1.1K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.1K
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
2.5K

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相关实验视频

Updated: Sep 13, 2025

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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重灌亚毫米级铁磁软连续体.

Yang Yang1, Wentao Shi1, Boguang Yang2

  • 1Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong, SAR, China.

Nature communications
|July 31, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了能够自我分裂和自我融合的新型铁磁软连续体 (FSC). 这种"重新接种"能力提高了复杂的生物医学任务的灵活性.

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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
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科学领域:

  • 材料科学 材料科学 材料科学
  • 机器人技术 机器人技术 机器人技术
  • 生物医学工程 生物医学工程

背景情况:

  • 亚毫米级铁磁软连续体 (FSC) 在狭窄的生物空间中提供精确的导航.
  • 由于设计的局限性,目前的FSC缺乏先进的体内治疗的复杂性.

研究的目的:

  • 为复杂的生物医学任务开发具有增强可重构性和功能性的FSC.
  • 在亚毫米尺度的FSC中引入"重灌"概念的"自我分裂和自我融合".

主要方法:

  • 开发了用于FSC的新型铁磁热塑性软材料,取代了传统的耐热材料.
  • 工程 FSC 经历可逆弹性体-流体过渡,使控制的分裂和合并成为可能.
  • 证明FSC能够进行自我分裂和自我融合以改变形状的能力.

主要成果:

  • 实现了能够积极自我分裂和自我融合 ("重新植入") 的亚毫米尺度的FSC.
  • 成功地从导航的连续结构强度过渡到分裂/合并的低断裂强度.
  • 通过利用固有的材料特性,消除了对外部涂层的需求.

结论:

  • 重塑增强了FSC的灵活性,并为各种生物医学应用在现场进行重新配置.
  • 开发的热塑性FSC为先进的内镜任务和治疗提供了一个多功能平台.
  • 这一创新为更复杂的体内操作和治疗铺平了道路.