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 Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
Eddy Currents01:25

Eddy Currents

Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
Magnetic Damping01:17

Magnetic Damping

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...

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

A Physics-Data Hybrid Framework Using Uncalibrated Consumer CMOS Vision: Pilot Study on Monocular Automatic TUG Assessment Towards Early Parkinson's Disease Risk Screening.

Micromachines·2026
Same author

Characterization of an Ultra-Thin Silicon Strain Gauge Exposed to Gamma Ray Irradiation.

Sensors (Basel, Switzerland)·2026
Same author

A Strain Decoupling Packaging Strategy for High-Fidelity Ultrathin Silicon Shape Sensors for Soft Medical Robotics.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Robust Full-Surface Bonding of Substrate and Electrode for Ultra-Flexible Sensor Integration.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Sensing the restoring force characteristics for detached house structural health monitoring using a camera and accelerometer fusion.

Scientific reports·2025
Same author

Feasibility of a nurse-initiated brief cognitive behavioral strategy intervention program for symptom clusters experienced by patients with advanced non-small cell lung cancer.

Asia-Pacific journal of oncology nursing·2024

相关实验视频

Updated: Jul 3, 2026

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
08:42

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

11.6K

一种无线被动压力传感方法用于使用磁电阻的冷应用.

Ziqi Zhao1, Michitaka Yamamoto1, Seiichi Takamatsu1

  • 1Department of Precision Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.

Sensors (Basel, Switzerland)
|February 10, 2024
PubMed
概括

我们开发了一种新的无线被动压力传感器,用于低温温度. 这种强大,低成本的传感器使用磁电阻和反射天线可用于在 -196 °C 的可靠远程压力监测.

科学领域:

  • 低温工程 低温工程是什么?
  • 无线传感器技术 无线传感器技术
  • 材料科学 材料科学 材料科学

背景情况:

  • 传统的冷压力传感器面临着挑战,原因是低温耐受性差,电源和数据的复杂布线.
  • 现有的方法需要繁的设置,限制它们在极寒环境中的应用.

研究的目的:

  • 开发一种新的无线,被动压力传感方法,专门用于冷温度 (-196°C).
  • 在极寒环境中克服传统传感器的局限性.
  • 为了使冷学中的压力监测能够简单,强大,且具有成本效益.

主要方法:

  • 将耐低温磁电阻 (MR) 集成到反散射天线上.
  • 利用MR和磁铁之间的压力诱导的位移来调节天线返回损失.
  • 采用无线回散技术用于被动数据采集.

主要成果:

  • 制造的传感器成功地检测到室温 (24°C) 和冷温度 (-196°C) 的不同压力.
  • 实现了4.3dB/MPa (室温) 和1.3dB/MPa (冷温度) 的高灵敏度.
  • 通过频段分离,证明了同时对多个传感器进行无线读取的能力.

结论:

关键词:
背向散射是一种背向散射.低温的冷却物质是什么磁电阻是磁电阻.是被动的被动的压力传感器 压力传感器无线无线无线无线无线.

更多相关视频

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

10.6K
Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

2.2K

相关实验视频

Last Updated: Jul 3, 2026

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
08:42

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

11.6K
Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

10.6K
Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
05:57

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

2.2K
  • 开发的方法提供了一种低成本,简单,坚固,被动和无线的解决方案,用于在 -196 °C 的压力测量.
  • 这种技术非常适用于各种需要可靠压力监测的冷应用.
  • 传感器的设计克服了极端寒冷环境中现有技术的局限性.