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

Electromagnetic Wave Equation01:24

Electromagnetic Wave Equation

1.0K
Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose trajectory can thus be determined using suitable boundary conditions. The objective of electromagnetism is thus theoretically complete.
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...
1.0K
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

3.6K
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed...
3.6K
Electric Field of Two Equal and Opposite Charges01:30

Electric Field of Two Equal and Opposite Charges

5.8K
Atoms generally contain the same number of positively and negatively charged particles, protons, and electrons. Hence, they are electrically neutral. However, the centers of the positive and negative charges do not always coincide. In such a scenario, the electric field of an atom may not be zero.
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
5.8K
Plane Electromagnetic Waves II01:29

Plane Electromagnetic Waves II

3.0K
Consider a plane wavefront traveling in position x-direction with a constant speed. This wavefront can be utilized to obtain the relationship between electric and magnetic fields with the help of Faraday's law.
3.0K
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

887
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
887
Standing Electromagnetic Waves01:15

Standing Electromagnetic Waves

1.5K
Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
1.5K

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

Temporal topological state transitions of optical skyrmion lattices.

Optics letters·2026
Same author

Structureless excitation and manipulation of dynamic holographic plasmonic slides.

Nature communications·2026
Same author

Scalable and programmable topological transitions in plasmonic Moiré superlattices.

Nature communications·2026
Same author

Robust immunoreaction induced by a subunit vaccine of PEDV spike protein based on GEM surface-display system.

Vaccine·2026
Same author

Spin angular momentum modulation via spin-orbit interaction in fractional orbital angular momentum beams.

Nanophotonics (Berlin, Germany)·2025
Same author

Experimental Observation of Topological Transition in Optical Multimeron.

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

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026
Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026
Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026
Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026
Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026
Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026
查看所有相关文章

相关实验视频

Updated: Jun 16, 2025

Scanning SQUID Study of Vortex Manipulation by Local Contact
06:53

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

6.8K

无衍射极限的电磁场旋-反旋对.

Min Lin, Luping Du, Xiaocong Yuan

    Optics express
    |June 14, 2025
    PubMed
    概括
    此摘要是机器生成的。

    研究人员在 evanescent 领域展示了无衍射极限的 vortex-antivortex 对. 这些光学现象的分离可以控制,为拓准粒子和显微镜中的应用提供了新的见解.

    更多相关视频

    Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
    06:27

    Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques

    Published on: July 2, 2018

    8.1K
    Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
    12:26

    Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

    Published on: August 27, 2013

    17.1K

    相关实验视频

    Last Updated: Jun 16, 2025

    Scanning SQUID Study of Vortex Manipulation by Local Contact
    06:53

    Scanning SQUID Study of Vortex Manipulation by Local Contact

    Published on: February 1, 2017

    6.8K
    Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
    06:27

    Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques

    Published on: July 2, 2018

    8.1K
    Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
    12:26

    Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

    Published on: August 27, 2013

    17.1K

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 凝聚物质物理学 凝聚物质物理学

    背景情况:

    • 在各种物理系统中研究了 vortex-antivortex对的生成.
    • 光学-反对已经在自由空间实现,但不是在 evanescent 领域.
    • 发光场和反与像光子天体一样的拓准粒子的形成有关.

    研究的目的:

    • 为了首次演示波因廷向量的无衍射极限旋-反旋对在 evanescent 场.
    • 为了研究控制和抗之间的分离距离.
    • 为拓准粒子机制和潜在应用提供见解.

    主要方法:

    • 使用特定的光学设置,在 evanescent 场中生成和观察 vortex-antivortex 对.
    • 操纵发生光场的螺旋相.
    • 分析Poynting向量-反对的空间特征和分离.

    主要成果:

    • 在 evanescent 场中成功演示了无衍射极限的 vortex-antivortex 对.
    • 证明了和反之间的分离距离可以通过事件场的螺旋相调节.
    • 确认这种分离是独立于衍射极限的.

    结论:

    • 这项工作建立了一种创新的方法,用于在 evanescent 场中创建和控制 vortex-antivortex 对.
    • 这些发现提高了对拓准粒子及其形成机制的理解.
    • 展示的技术有望为超分辨率显微镜和精密计量学的进步提供希望.