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

Induced Electric Dipoles01:28

Induced Electric Dipoles

4.2K
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
4.2K
Induced Electric Fields01:23

Induced Electric Fields

3.7K
The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...
3.7K
Electric Field of Two Equal and Opposite Charges01:30

Electric Field of Two Equal and Opposite Charges

5.9K
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...
5.9K
Induced Electric Fields: Applications01:27

Induced Electric Fields: Applications

1.6K
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
1.6K
Electric Field01:16

Electric Field

10.7K
Consider two point charges, each exerting Coulomb force on the other. It is possible to describe the Coulomb interaction via an intermediate step by defining a new physical quantity called the electric field.
In the new picture, imagine that the first charge sets up an electric field independent of all other charges in the universe. When another charge comes in its vicinity, the second charge experiences an electric force depending on the electric field at that point. The source charge does not...
10.7K
Electric Field Lines01:25

Electric Field Lines

7.5K
The three-dimensional representation of the electric field of a positive point charge requires tracing the electric field vectors, whose lengths decrease as the square of their distance from the charge and which point away from the charge at each point. This vector field is no doubt challenging to visualize. The visualization of electric fields becomes quickly intractable as the number of charges increases.
The solution to this problem is to use electric field lines, which are not vectors but...
7.5K

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

Association of the global inflammatory-nutritional index (GINI) with time to next treatment and overall survival in patients with metastatic colorectal cancer receiving third-line therapy: a real-world retrospective study.

Journal of gastrointestinal oncology·2026
Same author

Room-Temperature Intrinsic Nonlinear Planar Hall Effect in TaIrTe_{4}.

Physical review letters·2026
Same author

Perioperative Applications of Electrical Stimulation in Flap Surgeries: Mechanisms and Benefits.

Advances in skin & wound care·2026
Same author

Wideband high-gain Fabry-Perot resonator antenna based on a water-based metasurface.

Optics express·2026
Same author

Moxibustion for gastrointestinal cancer-related fatigue: study protocol for a randomized clinical trial.

Frontiers in psychiatry·2026
Same author

GLUT3 drives paclitaxel resistance in peritoneal metastatic gastric cancer by promoting H3K18 lactylation-mediated MAPKAP1 transcription to suppress ferroptosis.

International journal of biological sciences·2026

相关实验视频

Updated: Jun 23, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

9.6K

由量子几何起源的平面内场诱导的间层电极多极.

Huiyuan Zheng1,2, Dawei Zhai1,2, Cong Xiao2,3

  • 1New Cornerstone Science Laboratory, Department of Physics, The University of Hong Kong, Hong Kong, China.

Nano letters
|June 20, 2024
PubMed
概括

我们展示了电场可以控制2D材料中的电荷转移,产生电极多极. 这种量子几何效应为操纵分层材料提供了新的方法.

关键词:
异常电极化异常电极化电气多极电气多极电气在飞机内部的电场.量子几何学的量子几何学扭曲的二层和三层.

更多相关视频

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

11.5K
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

8.7K

相关实验视频

Last Updated: Jun 23, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

9.6K
Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
10:36

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Published on: April 12, 2018

11.5K
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

8.7K

科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 材料科学 材料科学 材料科学
  • 量子力学就是量子力学.

背景情况:

  • 由于量子束,二维 (2D) 材料表现出独特的电子特性.
  • 层次的二维材料中的层间相互作用对于它们的新兴现象至关重要.
  • 了解应对外部场的电荷动态对于新型电子设备至关重要.

研究的目的:

  • 通过二维材料的层间电荷传输来研究电气多极的产生.
  • 探索量子几何特性 (贝里曲率和量子度量) 在这种现象中的作用.
  • 在2D系统中展示电场对层自由度的控制.

主要方法:

  • 响应平面内电场的电荷转移动态的理论建模.
  • 量子几何起源的分析,包括贝里曲率和量子度量.
  • 线性和非线性电响应的对称性表征.
  • 对过渡金属二甲基化物 (TMD) 双层和三层的研究.
  • 通过层间转换诱导的拓相位过渡期间的影响的研究.

主要成果:

  • 平面内电场驱动层间电荷转移,产生线性 (双极) 和第二阶非线性 (四极) 电气多极.
  • 这些效应源于层级材料扩展参数空间中的量子几何性质.
  • 在扭曲的TMD双层和三层中证明了可观的双极和四极极化.
  • 电荷转移和多极生成在拓相位过渡附近显著增强,通过层间转换调整.

结论:

  • 建立了一种用于电气控制二维材料中层间电荷转移和多极生成的新型机制.
  • 量子几何学,特别是贝里曲率和量子度量学,支配着这些线性和非线性电反应.
  • 这些发现为2D材料中层自由度的电气操纵提供了一个新的途径,在下一代电子产品中具有潜在的应用.