Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

2.9K
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.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
2.9K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

The Role and Diagnostic Efficacy of the METTL14/GADD45B m<sup>6</sup>A Methylation/BDNF Regulatory Axis in Acute Ischemic Stroke.

Cellular and molecular neurobiology·2026
Same author

Power-efficient ultra-broadband soliton microcombs in resonantly-coupled microresonators.

Light, science & applications·2026
Same author

Integrated optomechanical ultrasonic sensors with nano-Pascal-level sensitivity.

Light, science & applications·2026
Same author

Revisiting <i>HLA-DQA1</i>*05 in Asian inflammatory bowel disease cohorts: Ethnic variations in genetic susceptibility to immunogenicity.

World journal of gastroenterology·2026
Same author

Relationship between surface pollen and their vegetation in Hupingshan National Nature Reserve, Hunan Province, China.

Ying yong sheng tai xue bao = The journal of applied ecology·2025
Same author

Large-scale cluster quantum microcombs.

Light, science & applications·2025

相关实验视频

Updated: May 2, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.1K

皮科特斯拉-灵敏度微腔光学机械磁力测量

Zhi-Gang Hu1,2, Yi-Meng Gao1,2, Jian-Fei Liu1,2

  • 1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.

Light, science & applications
|September 28, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了使用FeGaB薄膜的新型微腔光机磁计 (MCOM),实现了前所未有的磁场传感灵敏度. 开发的设备提供了两个数量级的改进,可以在没有偏差磁场的情况下进行精确的测量.

更多相关视频

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

2.7K
High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.0K

相关实验视频

Last Updated: May 2, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.1K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

2.7K
High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.0K

科学领域:

  • 物理 物理学 物理
  • 材料科学 材料科学 材料科学
  • 工程 工程师 工程师 工程师

背景情况:

  • 洞光机械系统通过光学和机械共振增强磁场传感.
  • 之前使用特尔-D膜的微腔光机磁测量 (MCOM) 具有有限的灵敏度 (585 pT Hz-1/2).

研究的目的:

  • 通过在SiO2 WGM微盘上使用FeGaB薄膜开发一种高灵敏度,可大规模生产的MCOM.
  • 通过改变膜和微盘的参数,理论上探索磁性启动和噪声受限的灵敏度.
  • 为了展示实时脉冲磁场测量,用于诸如冠状病毒电流监测等应用.

主要方法:

  • 在高QSiO2微光盘上喷射FeGaB薄膜,以低声画廊模式 (WGM) 的方式.
  • 制造和表征具有不同半径和薄膜厚度的多个磁力计.
  • 进行有关磁性调动常数和噪声受限灵敏度的理论研究.

主要成果:

  • 在9.52 MHz使用355微米半径的微光盘和1.3微米厚的FeGaB薄膜,达到1.68 pT Hz-1/2的峰值灵敏度.
  • 与之前的Terfenol-D喷膜相比,表现出超过两倍的灵敏度改善.
  • 由于FeGaB的柔软磁性,因此没有偏差磁场的操作.

结论:

  • 基于FeGaB的MCOM在磁场传感灵敏度和性能方面取得了重大进展.
  • 开发的磁力计适用于实时脉冲磁场测量,例如高压线路中的冠冕电流.
  • 高灵敏度磁力计显示了磁感应断层扫描和冠状电流监测中的应用潜力.