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 Vector Potential01:15

Magnetic Vector Potential

1.7K
In electrostatics, the electric field can be written as the negative gradient of the potential. In magnetostatics, the zero divergence of the magnetic field ensures that the magnetic field can be expressed as the curl of a vector potential. This potential is known as the magnetic vector potential.
Consider an ideal solenoid with n turns per unit length and radius R. If I is the current through the solenoid, the magnetic field inside the solenoid is expressed as the product of vacuum...
1.7K
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.8K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.8K
Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

6.4K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
6.4K
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

6.6K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
6.6K
Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

12.0K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
12.0K
Magnetic Field Lines01:19

Magnetic Field Lines

6.1K
The representation of magnetic fields by magnetic field lines is very useful in visualizing the strength and direction of the magnetic field. Each of the magnetic field lines forms a closed loop. The field lines emerge from the north pole (N), loop around to the south pole (S), and continue through the bar magnet back to the north pole.
Magnetic field lines follow several hard-and-fast rules:
6.1K

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

Crystal Symmetry-Driven Spin-Optical Dynamics in Cr<sup>3+</sup> Molecular Spins.

Inorganic chemistry·2026
Same author

Highlighting radical sites through polarized neutron scattering from AFP-modulated polarized protons.

IUCrJ·2025
Same author

Author Correction: Approaching coupled-cluster accuracy for molecular electronic structures with multi-task learning.

Nature computational science·2025
Same author

Approaching coupled-cluster accuracy for molecular electronic structures with multi-task learning.

Nature computational science·2024
Same author

Dynamic Nuclear Polarization with P1 Centers in Diamond.

The journal of physical chemistry letters·2024
Same author

Peptidic "Molecular Beacon" for Collagen.

Biomacromolecules·2024

相关实验视频

Updated: Mar 7, 2026

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

10.0K

强大的交流矢量传感器在零磁场时使用五烯.

Boning Li1,2, Garrett Heller2,3, Jungbae Yoon2

  • 1Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.

Nano letters
|March 6, 2026
PubMed
概括

研究人员开发了室温,零场微波向量磁力测量,使用pentacene分子旋转. 这一量子传感突破实现了高灵敏度和空间分辨率,用于探测微波场.

关键词:
五二烯 (Pentacene) 是一种新物质.量子控制是一种量子控制.灵敏度 灵敏度 灵敏度 灵敏度 灵敏度矢量磁力测量学 矢量磁力测量学

更多相关视频

DNA-magnetic Particle Binding Analysis by Dynamic and Electrophoretic Light Scattering
10:35

DNA-magnetic Particle Binding Analysis by Dynamic and Electrophoretic Light Scattering

Published on: November 9, 2017

12.6K
Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties
14:42

Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties

Published on: May 2, 2014

9.6K

相关实验视频

Last Updated: Mar 7, 2026

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

10.0K
DNA-magnetic Particle Binding Analysis by Dynamic and Electrophoretic Light Scattering
10:35

DNA-magnetic Particle Binding Analysis by Dynamic and Electrophoretic Light Scattering

Published on: November 9, 2017

12.6K
Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties
14:42

Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties

Published on: May 2, 2014

9.6K

科学领域:

  • 量子传感是一种量子感应.
  • 分子自旋电子学分子自旋电子学
  • 微波场检测检测 微波场检测 微波场检测

背景情况:

  • 固态系统中的电子旋转对于探测微波场是有效的.
  • 分子晶体为基于自旋的传感器提供了诸如高自旋密度和化学可调性等优势.
  • 现有的方法通常需要冷温度或外部磁场.

研究的目的:

  • 通过在室温和零磁场下使用分子旋转来演示微波向量磁力测量.
  • 为了实现完全的三维微波场重建.
  • 为了提高量子传感应用的灵敏度和空间分辨率.

主要方法:

  • 利用了纳斯烯晶体中的化五烯分子的光激发自旋三重组.
  • 检测到两种晶体学方向的异型自旋三重过渡的拉比频率.
  • 实施了相位交替协议,以延长旋转框架一致性时间.

主要成果:

  • 在室温和零外磁场下实现了完整的3D微波场重建.
  • 经证明的 1 μT/Hz 的灵敏度,具有微米以下的空间分辨率.
  • 通过使用相交替协议将旋转框架连贯时间延长了数量级.

结论:

  • 基于五烯的分子旋转代表了微波量子传感的实用和高性能平台.
  • 开发的控制技术广泛适用于其他分子和固态自旋系统.
  • 这项工作为在环境条件下先进的微波场检测铺平了道路.