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

Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

723
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
723
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

1.7K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.7K
Two-Dimensional (2D) NMR: Overview01:12

Two-Dimensional (2D) NMR: Overview

1.5K
The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
1.5K
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1.6K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.6K
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

1.4K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.4K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.5K
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...
1.5K

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

Introduction to the First Workshop on Vision Foundation Models and Generative AI for Accessibility.

... IEEE International Conference on Computer Vision workshops. IEEE International Conference on Computer Vision·2026
Same author

Fabrication of collagen fiber films incorporated with different sourced hydrocolloids and the application in chilled meat preservation: a comparative study.

Journal of the science of food and agriculture·2026
Same author

Predicting Solvation Free Energies of Molecules and Ions via First-Principles and Machine-Learning Molecular Dynamics.

Journal of chemical theory and computation·2026
Same author

Generative AI in physical education and health: a narrative review and conceptual framework for interdisciplinary thematic learning.

Frontiers in public health·2026
Same author

Integrated Metabolomics and Molecular Docking Reveal Spatial and Developmental Variations in Flavor and Bioactive Constituents of <i>Lonicera japonica</i> Flos.

Foods (Basel, Switzerland)·2026
Same author

Optical Anisotropy as a Probe of Proton Ordering at Ice Surfaces.

Journal of chemical theory and computation·2026

相关实验视频

Updated: Jan 15, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.9K

两个维的莫伊雷音声 (Moiré) 语音 (Phonon) 北极音 (Polaritons)

Hao Shi1,2, Chu Li2, Ding Pan2,3

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

Nano letters
|October 16, 2025
PubMed
概括

研究人员在扭曲的二维材料中发现了"moiré phonon polaritons" (PhP). 这些新的混合光物模式具有独特的光谱特性和纳米模式的波函数,使新的光物相互作用工程成为可能.

关键词:
莫埃尔超级网格 莫埃尔超级网格接近场光学近场光学语音波拉里顿语音波拉里顿语音频谱重建的重建这是二维材料的二维材料.

更多相关视频

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.6K
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.9K

相关实验视频

Last Updated: Jan 15, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
10:40

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

7.9K
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.6K
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.9K

科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 光子学 是一个光子学.
  • 材料科学是一种材料科学.

背景情况:

  • 声子极子 (Phonon polaritons,PhP) 是混合光物准粒子,由光子和光学声子的合产生的.
  • 二维 (2D) 材料提供了独特的平台来探索异国情调的物理现象,因为它们的缩小维度.
  • 由堆叠和扭曲2D材料形成的Moiré超级格子引入周期潜力,可以显著改变电子和光学特性.

研究的目的:

  • 为了研究由扭曲的2D材料形成的莫雷超级格子中的语音极子子的存在和特性.
  • 探索莫雷电位对PhP的光谱特征和电磁波功能的影响.
  • 建立moiré超级格子作为一个新的平台,以设计纳米级的光物质相互作用.

主要方法:

  • 在扭曲的二维物质系统中理论研究语音极子子行为.
  • 使用现实的格子模型进行数值模拟,以捕捉moiré潜力的效应.
  • 对光谱重建和电磁波功能模式的分析.

主要成果:

  • 识别了一种新的混合光物质模式类别,称为"莫雷声极子子" (moiré PhPs).
  • 观测基本的光谱重建到多个不同的分支由于moiré潜力.
  • 通过超级网格结构决定的纳米模式电磁波函数的确认.
  • 通过纳米尺度结构产生强大的,空间变化的近场反应的演示.

结论:

  • 莫伊尔超级格子提供了一个强大的平台,可以创建和控制新的声极子模式.
  • 莫雷PHP的独特的光谱和空间特性为先进的光物质相互作用工程开辟了道路.
  • 这项工作突显了moiré异构结构在下一代纳米光子设备和量子技术中的潜力.