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

Network Covalent Solids02:18

Network Covalent Solids

16.0K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.0K
Non-ohmic Devices00:51

Non-ohmic Devices

1.5K
In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
Consider a simple circuit consisting of a battery, a diode, and a resistor. A...
1.5K
Ionic Crystal Structures02:42

Ionic Crystal Structures

16.8K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.8K
Metallic Solids02:37

Metallic Solids

20.4K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.4K
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

882
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
882
MOS Capacitor01:25

MOS Capacitor

1.4K
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
1.4K

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

Cold-injection synthesis of highly emissive perovskite nanocrystals.

Nature·2026
Same author

A hierarchical shell locks and stabilizes perovskite nanocrystals with near-unity quantum yield.

Science (New York, N.Y.)·2026
Same author

Electronic Configurational Transformation of Network Modifiers in Aluminate Glass above Megabar Pressures.

Journal of the American Chemical Society·2025
Same author

Electronic Structures of Iron in Oxide Glasses via 1s3p Resonant Inelastic X-ray Scattering.

The journal of physical chemistry letters·2025
Same author

Imaging of the electronic bonding of diamond at pressures up to 2 million atmospheres.

Science advances·2023
Same author

Coordination Changes in Densified Aluminate Glass upon Compression up to 65 GPa: A View from Solid-State Nuclear Magnetic Resonance.

The journal of physical chemistry letters·2023

相关实验视频

Updated: Jan 11, 2026

Fabrication of Spatially Confined Complex Oxides
08:45

Fabrication of Spatially Confined Complex Oxides

Published on: July 1, 2013

10.1K

在压缩下超连接的无形氧化物网络.

Sung Keun Lee1,2, Elias El Ghazaoui3, Jin Jung Kweon3

  • 1Laboratory of Physics and Chemistry of Earth and Planetary Materials, School of Earth and Environmental Sciences, Seoul National University, Seoul, Republic of Korea. sungklee@snu.ac.kr.

Nature communications
|November 14, 2025
PubMed
概括

无可逆转密集氧化玻璃由于增强的网络纠和超连接性,显示出令人惊的可塑性. 这一发现解释了双重机械反应,并指导了新型超硬玻璃材料的开发.

更多相关视频

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
06:44

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

3.7K
Writing and Low-Temperature Characterization of Oxide Nanostructures
06:43

Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

10.4K

相关实验视频

Last Updated: Jan 11, 2026

Fabrication of Spatially Confined Complex Oxides
08:45

Fabrication of Spatially Confined Complex Oxides

Published on: July 1, 2013

10.1K
Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
06:44

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing

Published on: June 9, 2023

3.7K
Writing and Low-Temperature Characterization of Oxide Nanostructures
06:43

Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

10.4K

科学领域:

  • 材料科学 材料科学 材料科学
  • 固态化学 固态化学
  • 地质物理学 地质物理学

背景情况:

  • 无可逆转密集的氧化玻璃表现出意想不到的软化和可塑性,与密集后的典型刚性相矛盾.
  • 在无形网络中,控制这些独特的机械反应的原子级机制尚不清楚.
  • 了解高压下网络纠和连接对于解释这些现象至关重要.

研究的目的:

  • 为了研究在极端变形下缩无形氧化物的原子级变化.
  • 阐明网络结构,纠和机械特性之间的关系.
  • 探索玻璃行为中的配置多样性和超连接性的作用.

主要方法:

  • 磁共振光谱学被用来测量密集的无形氧化物.
  • 分析的重点是网络纠,超连接和原子的协调.
  • 研究了无形氧化 (Al2O3) 和其他复杂氧化玻璃的配置多样性.

主要成果:

  • 在密集的无形氧化物中发现了增强网络纠和超连接的证据.
  • 高度协调的原子的增加和它们的空间接近表明了超连接性.
  • 与其他氧化玻璃相比,无形Al2O3表现出更大的配置多样性,并在较低的压力下达到超连接性.
  • 通过增加非网络电话的现场强度来促进配置多样性.

结论:

  • 增强的连接性,特别是低压的超连接性,可能会在变形过程中促进网络的灵活性.
  • 这项工作提供了一个概念框架,用于控制压力下的眼镜中的双重机械反应.
  • 这些发现指导了超硬密集玻璃的开发,并解释了行星内部超连接玻璃的弱化.