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

Imperfections in Crystal Structure: Point, Line and Plane Defects01:25

Imperfections in Crystal Structure: Point, Line and Plane Defects

A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
Imperfections in Crystal Structure: Non-Stoichiometric Defects01:29

Imperfections in Crystal Structure: Non-Stoichiometric Defects

Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...

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

Characteristic Constituents of Maocangzhu and Beicangzhu Revealed Using Electronic Nose, Electronic Tongue, HS-GC-IMS, and UPLC-Orbitrap Technologies.

Molecules (Basel, Switzerland)·2026
Same author

Ultrabright Near-Infrared Lead-Free Perovskite Light-Emitting Diodes with Negligible Efficiency Roll-Off.

Journal of the American Chemical Society·2026
Same author

Dual-Functional Alumina Additive Enabling Efficient, Volumetric Mechanoluminescence for Nighttime Safety Footwear.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Iodine-Mediated On-DNA Oxidative Cyclization of 2-Pyridylhydrazones for 1,2,4-Triazolo[4,3-<i>a</i>]pyridines.

Organic letters·2026
Same author

Halide-site-substituting spacer creates quasi-two-dimensional perovskites for vapour-deposited light-emitting diodes.

Nature nanotechnology·2026
Same author

Dopant-localized mechanoluminescence in simple oxides.

Light, science & applications·2026

相关实验视频

Updated: Jun 9, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.3K

缺陷局部化机械发光模型在铜合硫化中.

Hong In Jeong1, Milos Dubajic1, Cheong Beom Lee2,3

  • 1Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom.

ACS nano
|September 26, 2025
PubMed
概括

硫化物微粒中的机械发光是可用于光电子的机械调节. 这项研究揭示了铜缺陷,而不是格子,是排放的关键,使新的材料设计成为可能.

关键词:
用铜合的 ZnS机械发光机械发光机超光谱光发光显微镜学机械发光机制 发光机制这是一种光效应 (piezophotonic effect).压力依赖的X射线衍射.应变诱导缺陷局部化的ML模型

更多相关视频

Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation
04:58

Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation

Published on: January 6, 2023

5.6K
Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
09:22

Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications

Published on: July 25, 2025

680

相关实验视频

Last Updated: Jun 9, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.3K
Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation
04:58

Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation

Published on: January 6, 2023

5.6K
Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
09:22

Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications

Published on: July 25, 2025

680

科学领域:

  • 材料科学 材料科学 材料科学
  • 光电学是指光电子产品.
  • 固态物理 固态物理

背景情况:

  • 硫化物 (ZnS) 微粒显示可调节的机械发光 (ML),这对于先进的光电子技术至关重要.
  • 这些材料的基本ML机制尚不清楚,阻碍了技术进步.

研究的目的:

  • 为了阐明铜-硫化物 (Cu-ZnS) 微粒中的机械发光动力学.
  • 建立对ML机制的基本理解,以改善材料设计.

主要方法:

  • 采用混合技术,在单个样本水平上对结构和光学特性进行关联.
  • 视觉化了机械发光发射过程中发生的动态过程.

主要成果:

  • 铜 (Cu) 缺陷对应用于应变的格子扭曲非常敏感.
  • 应变诱导的格子扭曲局部填充电荷载体到与缺陷相关的电子状态.
  • 机械发光辐射源于这些局部缺陷点,而不是大量的ZnS网格.

结论:

  • 已经提出了一个缺陷局部化的机械发光模型,由弹性应变触发.
  • 这个模型为ZnS机械发光的长期提供了基本的见解.
  • 这些发现对设计下一代应用的高性能机械发光材料具有重大意义.