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

Emission Spectra02:39

Emission Spectra

79.0K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
79.0K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.8K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.8K
Molecular Orbital Theory II03:51

Molecular Orbital Theory II

28.5K
Molecular Orbital Energy Diagrams
28.5K
The de Broglie Wavelength02:32

The de Broglie Wavelength

34.8K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
34.8K
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

861
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
861
The Bohr Model02:18

The Bohr Model

84.0K
Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the...
84.0K

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

Multiparticle entanglement of nuclear spins in silicon.

Nature communications·2026
Same author

Quantum-Enhanced Sensing Enabled by Scrambling-Induced Genuine Multipartite Entanglement.

Physical review letters·2026
Same author

Author Correction: Bose-Einstein condensation of a two-magnon bound state in a spin-1 triangular lattice.

Nature materials·2026
Same author

Quantum-Enhanced Dark Matter Search Using Cat States.

Physical review letters·2026
Same author

Picosecond-scale coherent toggle switching of topological spin helicity.

Nature nanotechnology·2026
Same author

IL-3 Modulates Microglia Polarization and Attenuates Neuroinflammation in Traumatic Brain Injury.

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

相关实验视频

Updated: Apr 11, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
10:17

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

12.1K

在原子层的GaSe中强大的第二子生成.

Xu Zhou, Jingxin Cheng1, Yubing Zhou

  • 1‡State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures (MOE), Collaborative Innovation Center of Advanced Microstructures and Department of Physics, Fudan University, Shanghai 200433, China.

Journal of the American Chemical Society
|June 11, 2015
PubMed
概括
此摘要是机器生成的。

研究人员观察到高二 (GaSe) 原子层中的强光二生成 (SHG). 在GaSe中,这种非线性光学效应是两维 (2D) 材料中报告的最强的效应,为其特性提供了新的见解.

更多相关视频

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.3K
Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
11:21

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

8.0K

相关实验视频

Last Updated: Apr 11, 2026

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
10:17

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

12.1K
Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.3K
Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
11:21

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

8.0K

科学领域:

  • 材料科学 材料科学 材料科学
  • 凝聚物质物理学 凝聚物质物理学
  • 光电学是指光电子产品.

背景情况:

  • 在二维 (2D) 原子层材料中的非线性光学现象正在获得显著的关注.
  • 这些效应,包括非线性光学边缘响应和山谷/旋转电流,扩大了2D材料的潜在应用.
  • 在新兴的二维材料中探索新型非线性效应对于技术进步至关重要.

研究的目的:

  • 报告第一个在单层化 (GaSe) 中强光二生成 (SHG) 的观察.
  • 在非共振激发和发射条件下研究GaSe的非线性光学特性.
  • 使用SHG探测GaSe原子层的对称性和结构性质.

主要方法:

  • 在单层和双层GaSe.Se中实验观察光学第二和生成 (SHG).
  • 在波长为1600nm的非共振激发和发射光谱学.
  • 偏振依赖的SHG强度测量和SHG映射.
  • 在GaSe.Se中分析格子对称性和堆叠顺序 (AA,AB).

主要成果:

  • 单层GaSe表现出非常强的非共振SHG,超过迄今为止测量的其他二维原子晶体.
  • 来自单层GaSe的SHG信号在相同的激发功率下比MoS2的信号强出1-2个数量级.
  • 单层GaSe显示3倍格子对称性,与其三角形状相关联.
  • 双层GaSe显示主导的AA和AB堆叠顺序,边缘配置在不同层中一致.

结论:

  • 在目前研究的二维原子晶体中,GaSe具有最强的非线性光学响应.
  • SHG是一种强大的工具,用于研究GaSe原子层的结构和对称性.
  • 这些发现为探索GaSe和类似材料中的其他非线性光学效应开辟了道路.