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関連する概念動画

Molecular Comparison of Gases, Liquids, and Solids02:26

Molecular Comparison of Gases, Liquids, and Solids

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...
Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation04:01

Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation

Thus far, the ideal gas law, PV = nRT, has been applied to a variety of different types of problems, ranging from reaction stoichiometry and empirical and molecular formula problems to determining the density and molar mass of a gas. However, the behavior of a gas is often non-ideal, meaning that the observed relationships between its pressure, volume, and temperature are not accurately described by the gas laws.
Adsorption of Gases on Solids01:28

Adsorption of Gases on Solids

Adsorption is a process where molecules, known as the adsorbates, accumulate on a surface, which is referred to as the adsorbent or substrate. Occurring at the solid-gas interface, this phenomenon is crucial in various scientific and industrial contexts. The reverse of adsorption is desorption.Two types of adsorptions exist: physical (physisorption) and chemical (chemisorption). Physisorption involves gas molecules held to the solid's surface by relatively weak intermolecular van der Waals...
Intermolecular Forces and Physical Properties02:56

Intermolecular Forces and Physical Properties

Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...

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関連する実験動画

Updated: Jul 12, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

二次元のガス・固体界面の原子スケールダイナミクス

S J Stranick, M M Kamna, P S Weiss

    Science (New York, N.Y.)
    |October 7, 1994
    PubMed
    まとめ

    研究者は,スキャニングトンネル顕微鏡を用いて,2D分子ガスと固体の間のインターフェースをイメージしました. ベンゼンの分子は,移動可能な2Dガスを形成し,銅の表面上のステップエッジで固体を形成しました.

    科学分野:

    • 表面科学とは,地表科学のことである.
    • 物理化学 物理化学とは
    • マテリアルサイエンス 材料科学

    背景:

    • インタフェースにおける分子行動を理解することは,材料設計において極めて重要です.
    • 二次元の (2D) 分子システムは,縮小された次元性によりユニークな特性を提供します.

    研究 の 目的:

    • 2D分子ガスと2D分子固体間のインターフェースを視覚化および特徴づけること.
    • このインターフェースの分子動態を調査するために.

    主な方法:

    • 低温,超高真空スキャニングトンネル顕微鏡 (STM).
    • ベンゼン分子でCu{111}表面を使用しました.

    主要な成果:

    • 2Dベンゼンガスと固体ベンゼンとの間のインターフェースを成功裏にイメージしました.
    • ベンゼン分子がテラスに移動可能な2Dガスを形成し,ステップのエッジに固体を形成することを観察した.
    • サイト間の分子拡散とインターフェースでの相交換を文書化した.
    • 2Dガスを2D固体"ケージ"の中に,高層のテラスに閉じ込めることを実証した.

    結論:

    さらに関連する動画

    Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
    06:37

    Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package

    Published on: September 17, 2021

    関連する実験動画

    Last Updated: Jul 12, 2026

    An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
    11:03

    An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

    Published on: December 4, 2017

    Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
    06:37

    Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package

    Published on: September 17, 2021

    • この研究は,2Dのガス-固体界面を分子レベルで直接可視化します.
    • ベンゼンの分子は,インターフェースのガスと固体相で異なる行動を示します.
    • 観測されたダイナミクスは,分子自己組み立てと表面現象を理解するために重要である.