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Updated: Jun 19, 2025

An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components
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An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components

Published on: July 18, 2018

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高磁化复合磁流体:旋转密封的结构,磁铁学和新的密封机制

Daniela Susan-Resiga1,2, Vlad-Mircea Socoliuc1,3, István Borbáth4

  • 1Romanian Academy - Timisoara Branch, Center for Fundamental and Advanced Technical Research, Laboratory for Magnetic Fluids, 24 Mihai Viteazul Ave., 300223, Timisoara, Romania. vsocoliuc@gmail.com.

Soft matter
|July 24, 2024
PubMed
概括

这项研究引入了一种新的纳米复合材料磁流体,用于旋转密封. 添加铁纳米粒子显著提高了密封性能和破裂压力,提供了一个具有成本效益的解决方案.

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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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In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
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