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相关概念视频

Diamagnetic Shielding of Nuclei: Local Diamagnetic Current01:14

Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

907
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
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Magnetic Damping01:17

Magnetic Damping

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Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
505
Electromagnetic Fields01:30

Electromagnetic Fields

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Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of...
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相关实验视频

Updated: Jul 26, 2025

Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh
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银网用于记录性能透明的电磁干扰屏蔽.

Mingxuan Li1, Mehdi Zarei2, Khashayar Mohammadi3

  • 1Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States.

ACS applied materials & interfaces
|June 14, 2023
PubMed
概括
此摘要是机器生成的。

研究人员开发了用于透明电磁干扰 (EMI) 屏蔽的银网. 这些网格提供高屏蔽效率和可见光传输,使它们适合先进的电子应用.

关键词:
在EMI屏蔽中使用EMI屏蔽.金属墨水是金属墨水.金属网状网的金属网状网.摄影石版印刷 (photolithography) 是一种摄影方式.反应性离子蚀刻是一种反应性离子蚀刻.透明电极 透明的电极

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电气工程 电气工程
  • 光学是什么?光学是什么?光学是什么?

背景情况:

  • 透明的电磁干扰 (EMI) 屏蔽对于电子设备至关重要.
  • 现有的解决方案往往会损害透明度或屏蔽效率.

研究的目的:

  • 为了研究银网的性能,以实现透明的EMI屏蔽.
  • 为了优化屏蔽效率和可见光传输的网格参数.

主要方法:

  • 利用模拟来分析网格宽度,斜率和厚度对EMI屏蔽和透明度的影响.
  • 开发了一种可扩展的制造方法,使用蚀刻的玻璃和银色墨水.
  • 经过实验验证的模拟结果.

主要成果:

  • 实现了58.4dB的EMI屏蔽,可见光传输率为83%.
  • 证明了48.3dB的EMI屏蔽,可见光传输率为90.3%.
  • 确定了高性能透明屏蔽的最佳参数.

结论:

  • 银网格为透明的EMI屏蔽提供了一个有前途的解决方案.
  • 开发的制造方法是可扩展和有效的.
  • 材料特性和设计参数的结合导致了卓越的性能.