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

Valence Bond Theory02:42

Valence Bond Theory

11.1K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.1K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.5K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.5K
Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

1.8K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
1.8K
Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

26.4K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
26.4K
VSEPR Theory02:37

VSEPR Theory

13.9K
Valence shell electron-pair repulsion theory (VSEPR theory) enables us to predict the molecular structure around a central atom from an examination of the number of bonds and lone electron pairs in its Lewis structure. The VSEPR model assumes that electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between these electron pairs by maximizing the distance between them. The electrons in the valence shell of a central atom form either bonding...
13.9K
VSEPR Theory and the Effect of Lone Pairs04:01

VSEPR Theory and the Effect of Lone Pairs

52.1K
Effect of Lone Pairs of Electrons on Molecule Geometry
52.1K

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

Revealing the hidden third dimension of point defects in two-dimensional MXenes.

Nature communications·2026
Same author

Probing the Nanoscale Onset of Plasticity in Electroplated Copper for Hybrid Bonding Structures via Multimodal Atomic Force Microscopy.

ACS applied nano materials·2025
Same author

Direct Observation of Structural Phase Transformations during Phosphorene Formation on Cu(111).

ACS nano·2025
Same author

High-entropy alloy screening for halide perovskites.

Materials horizons·2024
Same author

Growth of Highly Oriented (VNbMoTaW)S<sub>2</sub> Layers.

Nano letters·2023
Same author

Magnetotransport Signatures of Superconducting Cooper Pairs Carried by Topological Surface States in Bismuth Selenide.

Nano letters·2023

相关实验视频

Updated: Jan 10, 2026

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.6K

多极模型用于MXenes中的无otropic空隙相互作用.

Steven R Goldy1, Garritt J Tucker2, Cristian V Ciobanu3

  • 1Department of Mechanical Engineering, Colorado School of Mines, Golden, Colorado 80401, United States.

ACS applied materials & interfaces
|November 21, 2025
PubMed
概括

在二维 (2D) MXenes 中的原子尺度空位表现出复杂的相互作用,具有短距离振荡和长距离功率定律行为. 了解这些缺陷相互作用对于调整电子和催化应用的MXene特性至关重要.

关键词:
二维弹性 2D弹性这就是MXenesenes.不同类型的异型性异型性多极模型是多极的模型.职位空缺的相互作用.

更多相关视频

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

6.7K
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.9K

相关实验视频

Last Updated: Jan 10, 2026

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.6K
Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
07:24

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

6.7K
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.9K

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
  • 表面科学是一门学科.

背景情况:

  • 原子尺度上的缺陷,如空缺,是二维 (2D) MXene 合成中固有的.
  • 这些缺陷影响了MXenes的电子,催化和传感性能.
  • 了解缺陷相互作用及其空间分布是控制材料属性的关键.

研究的目的:

  • 在Ti$_{m+1}$C$_m$ MXenes中研究空缺位置之间的相互作用能量.
  • 分析这些相互作用对间隙分离的异构依赖性.
  • 在二维材料中开发一个模型来描述空缺职位的长期相互作用.

主要方法:

  • 运用分子静态计算,利用键序的原子间电位.
  • 提取空缺职位之间的应力介导相互作用能量.
  • 使用多极扩张 (力双极和三极) 模型空位相互作用.

主要成果:

  • 在空位短距离时观察到的吸引力-排斥振荡.
  • 建立了空缺位置的远程相互作用模型,如叠加的平面内力三极和平面外力双极.
  • 证明了长距离相互作用遵循1/r^2和1/r^4功率规律的组合,与弹性半无限介质不同.

结论:

  • 衍生出来的双多极模型准确地描述了MXenes中的空位相互作用.
  • 该模型的原则可以扩展到各种2D材料上的其他缺陷或习惯.
  • 确定了最近邻居Ti空缺职位之间的有吸引力的相互作用,解释了它们在MXenes中观察到的集群.