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

Structures of Solids02:22

Structures of Solids

14.3K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
14.3K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

17.2K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
17.2K
Intermolecular vs Intramolecular Forces03:00

Intermolecular vs Intramolecular Forces

87.7K
Intermolecular forces (IMF) are electrostatic attractions arising from charge-charge interactions between molecules. The strength of the intermolecular force is influenced by the distance of separation between molecules. The forces significantly affect the interactions in solids and liquids, where the molecules are close together. In gases, IMFs become important only under high-pressure conditions (due to the proximity of gas molecules). Intermolecular forces dictate the physical properties of...
87.7K
Intrinsically Disordered Proteins02:18

Intrinsically Disordered Proteins

17.9K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
17.9K
First Law: Particles in One-dimensional Equilibrium01:10

First Law: Particles in One-dimensional Equilibrium

7.0K
Newton's first law of motion states that a body at rest remains at rest, or if in motion, remains in motion at constant velocity, unless acted on by a net external force. It also states that there must be a cause for any change in velocity (a change in either magnitude or direction) to occur. This cause is a net external force. For example, consider what happens to an object sliding along a rough horizontal surface. The object quickly grinds to a halt, due to the net force of friction. If...
7.0K
Entropy02:39

Entropy

30.4K
Salt particles that have dissolved in water never spontaneously come back together in solution to reform solid particles. Moreover, a gas that has expanded in a vacuum remains dispersed and never spontaneously reassembles. The unidirectional nature of these phenomena is the result of a thermodynamic state function called entropy (S). Entropy is the measure of the extent to which the energy is dispersed throughout a system, or in other words, it is proportional to the degree of disorder of a...
30.4K

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

Revealing bond level origin of stability in disordered solids from marginal stability to ultrastability.

Nature communications·2026
Same author

Unsupervised and probabilistic learning with Contrastive Local Learning Networks: The Restricted Kirchhoff Machine.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Effect of translational shear on interfacial structure in the viscous fingering instability.

Science advances·2026
Same author

Ideal non-crystals as a distinct form of ordered states without symmetry breaking.

Nature materials·2026
Same author

Evolutionary pathways in epistatic mechanical networks.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Order metrics of amorphous solids: structures, hyperuniformity, and implications for ultra-stable glasses.

Soft matter·2025
Same journal

In This Issue.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Correction for Otsuki et al., Extracellular sulfatases support cartilage homeostasis by regulating BMP and FGF signaling pathways.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Hive mind: Microbial communities and the making of memory.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Targets for disease modification in schizophrenia: New findings add to evidence for the involvement of the immune complement system.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Correction for Wang et al., The role of reduced aerosol masking from air pollutant emission reductions in recent global warming acceleration (2013-2023).

Proceedings of the National Academy of Sciences of the United States of America·2026
Same journal

Correction for Mishra, Ecology is not yet ready for AI-and why that matters.

Proceedings of the National Academy of Sciences of the United States of America·2026
查看所有相关文章

相关实验视频

Updated: Jul 19, 2025

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

2.3K

无序固体中不连续的不稳定性

Ding Xu1, Shiyun Zhang1, Andrea J Liu2,3

  • 1Hefei National Research Center for Physical Sciences at the Microscale, Chinese Academy of Sciences Key Laboratory of Microscale Magnetic Resonance, and Department of Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China.

Proceedings of the National Academy of Sciences of the United States of America
|August 16, 2023
PubMed
概括
此摘要是机器生成的。

无序的固体通过粒子重新排列表现出塑性流动. 这项研究揭示了一个新的"不连续不稳定性"机制,与折叠不稳定性不同,由"稳定键"的断裂驱动,这些键是机械故障的关键预测因素.

关键词:
没有秩序的固体.这是不稳定的不稳定.振动的正常模式.

更多相关视频

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.6K
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
10:35

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

12.3K

相关实验视频

Last Updated: Jul 19, 2025

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

2.3K
Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.6K
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
10:35

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

12.3K

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
  • 固体机械学 固体机械学

背景情况:

  • 固体中的可塑性涉及在负载下粒子重新排列.
  • 无热,准静态极限简化了可塑性分析.
  • 折叠不稳定性以前被认为是重新排列的主要原因.

研究的目的:

  • 在无序固体中识别和描述机械不稳定的新机制.
  • 为了调查的作用的作用.
  • 稳定债券债券稳定债券
  • 在材料故障中.
  • 为了建立准确的结构预测机械故障.

主要方法:

  • 在无序固体中分析振动模式.
  • 标识的识别方式
  • 折叠不稳定性的折叠不稳定性
  • 和和和和和和和和.
  • 不连续的不稳定.
  • . . . . . . . . . . . . . . 这就是为什么我会这样做.
  • 对调查的调查.
  • 稳定债券债券稳定债券
  • 以及它们在机械故障中的作用.

主要成果:

  • 一种新型的不稳定,
  • 不连续的不稳定性.
  • ,由造成的原因.
  • 稳定债券的稳定债券是什么
  • 突破,已经确定.
  • 这些这些这些这些这些
  • 不连续的不稳定.
  • 在常见的无序系统中,故障模式是普遍存在的,并且经常主导故障模式.
  • 稳定键作为初始机械故障的准确局部指标,预测不连续和折叠不稳定性.

结论:

  • 了解无序固体中的机械故障需要纳入不连续的不稳定性.
  • "稳定键"是预测材料失效的关键结构元素.
  • 这项工作为预测和潜在地减轻无序固体中的材料故障提供了新的框架.