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相关概念视频

Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

4.6K
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
4.6K
Vapor Pressure of Fluid01:28

Vapor Pressure of Fluid

1.8K
The vapor pressure of a fluid is a crucial concept in fluid mechanics, influencing phenomena such as boiling and cavitation. Vapor pressure refers to the pressure exerted by a vapor at a state of thermodynamic equilibrium with its corresponding liquid phase at a specific temperature. It represents the tendency of molecules to escape from the fluid surface into the vapor phase.
When a liquid is placed in a closed container with a small air space, and the space is evacuated, vapor molecules will...
1.8K
Recrystallization: Solid–Solution Equilibria01:10

Recrystallization: Solid–Solution Equilibria

2.0K
Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
2.0K
Vapor Pressure02:34

Vapor Pressure

38.7K
When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
38.7K
Phase Diagrams02:39

Phase Diagrams

48.6K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
48.6K
Vapor Pressure Lowering03:28

Vapor Pressure Lowering

30.5K
The equilibrium vapor pressure of a liquid is the pressure exerted by its gaseous phase when vaporization and condensation are occurring at equal rates:
30.5K

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  1. 首页
  2. 通过分子模拟探索结晶压力极限.
  1. 首页
  2. 通过分子模拟探索结晶压力极限.

相关实验视频

Synthesis and Microdiffraction at Extreme Pressures and Temperatures
07:26

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

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通过分子模拟探索结晶压力极限.

Bilal Mahmoud Hawchar1,2,3, Tulio Honorio4, Matthieu Vandamme1

  • 1Laboratoire Navier, ENPC, Institut Polytechnique de Paris, Université Gustave Eiffel, CNRS, Marne-la-Vallée, France.

The Journal of chemical physics
|December 2, 2025

在PubMed 上查看摘要

概括
此摘要是机器生成的。

结晶压力会损坏像水泥这样的材料. 分子模拟揭示了纳米湿膜如何分解,定义了临界压力极限并改进了材料保存策略.

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Methane Hydrate Crystallization on Sessile Water Droplets
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Achieving Moderate Pressures in Sealed Vessels Using Dry Ice As a Solid CO2 Source
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Achieving Moderate Pressures in Sealed Vessels Using Dry Ice As a Solid CO2 Source

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Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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Synthesis and Microdiffraction at Extreme Pressures and Temperatures

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科学领域:

  • 地质化学 地质化学
  • 材料科学 材料科学 材料科学
  • 物理化学 物理化学

背景情况:

  • 结晶压力对水泥和地质材料造成重大损害.
  • 现有的结晶压力理论和实验数据高度异质.
  • 纳米湿膜对于封闭结晶至关重要,但很难通过实验来研究.

研究的目的:

  • 用分子模拟来确定纳米尺度上的结晶压力现象的极限.
  • 为了研究限制湿膜消失的临界压力.
  • 了解湿膜成分对结晶的影响.

主要方法:

  • 混合配置偏差蒙特卡洛分子动力学模拟.
  • 在各种温度和压力条件下进行的模拟.
  • 封闭纯水膜与封闭盐水溶液膜的比较.

主要成果:

  • 建立了结晶压力的上下界限.
  • 定义了现有理论方程的适用范围.
  • 确定了影响受约束片传输性能的限制因素.

结论:

  • 分子模拟为纳米尺度结晶压力提供了关键的见解.
  • 了解湿膜的行为是预测和减轻物质损坏的关键.
  • 结果有助于完善理论模型和开发地质材料和水泥材料的保存策略.