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相关概念视频

Van der Waals Interactions01:24

Van der Waals Interactions

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Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
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Intermolecular Forces and Physical Properties02:56

Intermolecular Forces and Physical Properties

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Molecular Models02:00

Molecular Models

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Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
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Molecular Comparison of Gases, Liquids, and Solids02:26

Molecular Comparison of Gases, Liquids, and Solids

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Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
41.3K
Thermodynamic Potentials01:26

Thermodynamic Potentials

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Thermodynamic potentials are state functions that are extremely useful in analyzing a thermodynamic system. They have dimensions of energy. The four important thermodynamic potentials are internal energy, enthalpy, Helmholtz free energy, and Gibbs free energy. These thermodynamic potentials can be expressed using two of the following variables: pressure, volume, temperature, and entropy. These two variables are expressed as the rate of change of the thermodynamic potential with respect to other...
850
Network Covalent Solids02:18

Network Covalent Solids

13.5K
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...
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相关实验视频

Updated: Jul 12, 2025

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
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Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

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ColabFit交易所:为数据驱动的原子间潜力提供开放访问数据集.

Joshua A Vita1, Eric G Fuemmeler2, Amit Gupta2

  • 1Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA.

The Journal of chemical physics
|October 20, 2023
PubMed
概括
此摘要是机器生成的。

ColabFit Exchange是一个新的公共数据库,解决了缺乏有组织的数据集以开发数据驱动的原子间潜力 (IP) 的问题. 它促进了知识产权的基准测试和在计算材料科学和化学方面的进步.

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Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
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Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry

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Fully Autonomous Characterization and Data Collection from Crystals of Biological Macromolecules
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科学领域:

  • 计算材料科学科学 计算材料科学
  • 计算化学计算化学
  • 数据科学数据科学数据科学

背景情况:

  • 数据驱动的原子间潜力 (IPs) 对于材料科学和化学中的原子尺度模拟至关重要.
  • 严重缺乏有组织的,公开可访问的数据集,阻碍了知识产权的开发和基准测试.
  • 这种缺陷限制了创造更普遍和可转移的原子间潜能.

研究的目的:

  • 推出 ColabFit Exchange,这是第一个为原子间潜力开发而设计的数据库.
  • 提供对来自不同领域的大型,系统地组织的数据集集合的开放访问.
  • 促进社区推动的贡献和知识产权研究的进步.

主要方法:

  • 开发了一个基于网络的平台 (https://colabfit.org) 用于数据集的探索,下载和贡献.
  • 汇总了139个数据集,涵盖了近7万种来自文学和社区提交的独特化学物质.
  • 实施了用于数据集构建和访问的软件框架,包括多样性分析工具.

主要成果:

  • 科拉布Fit交易所为原子间潜力开发数据集提供了一个集中资源.
  • 该数据库目前拥有139个不同的数据集,并计划持续增长.
  • 分析量化了数据库的多样性,并提出了评估数据集多样性的指标.

结论:

  • 科拉布Fit交易所解决了在原子间潜力研究中对标准化数据集的关键需求.
  • 它使得可靠的基准测试,模型比较和更普遍的IP开发成为可能.
  • 该平台支持端到端的知识产权开发管道,集成适配和验证工具.