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関連する概念動画

Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

28.7K
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
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Noncovalent Attractions in Biomolecules02:35

Noncovalent Attractions in Biomolecules

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Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
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Van der Waals Interactions01:24

Van der Waals Interactions

65.0K
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.
65.0K
Intermolecular Forces03:13

Intermolecular Forces

59.8K
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...
59.8K
Rise of Liquid in a Capillary Tube01:18

Rise of Liquid in a Capillary Tube

2.3K
When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.
2.3K
Adhesion01:14

Adhesion

40.7K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
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Author Spotlight: Evaluation of Protein-Condensate Dynamics in Live Human Cells
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Author Spotlight: Evaluation of Protein-Condensate Dynamics in Live Human Cells

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生物分子凝縮物によって生成される毛細血管力

Bernardo Gouveia1, Yoonji Kim2, Joshua W Shaevitz3

  • 1Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA.

Nature
|September 7, 2022
PubMed
まとめ
この要約は機械生成です。

細胞の液体相分離により 生物分子凝縮物が生成されます 凝縮物表面の毛細血管力は 細胞プロセスを駆動し 細胞生物学の新しい境界線を提供します

さらに関連する動画

Molecular Spring Constant Analysis by Biomembrane Force Probe Spectroscopy
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Molecular Spring Constant Analysis by Biomembrane Force Probe Spectroscopy

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Imaging Integrin Tension and Cellular Force at Submicron Resolution with an Integrative Tension Sensor
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Imaging Integrin Tension and Cellular Force at Submicron Resolution with an Integrative Tension Sensor

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関連する実験動画

Last Updated: Aug 29, 2025

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Author Spotlight: Evaluation of Protein-Condensate Dynamics in Live Human Cells

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Molecular Spring Constant Analysis by Biomembrane Force Probe Spectroscopy
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Molecular Spring Constant Analysis by Biomembrane Force Probe Spectroscopy

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Imaging Integrin Tension and Cellular Force at Submicron Resolution with an Integrative Tension Sensor
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Imaging Integrin Tension and Cellular Force at Submicron Resolution with an Integrative Tension Sensor

Published on: April 25, 2019

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科学分野:

  • 細胞生物学
  • 柔らかい物質の物理
  • バイオ物理学

背景:

  • 細胞内の液体-液体相分離によって形成される膜のないコンパートメント,または生物分子凝縮物.
  • 混合不能の液体相の間のインターフェイスは,毛細血管力につながるインターフェイスの緊張を示します.

研究 の 目的:

  • 毛細血管の物理的原理を生物学的システムの文脈で提示する.
  • 毛細血管の力が生物分子凝縮物の構造と機能にどのように影響するか説明する.
  • 生物学的基質の再構築における毛細血管力の役割を強調する.

主な方法:

  • 毛細血管の理論物理学原理について
  • 多相コンデンサートにおける表面張力と毛細血管力の分析
  • 毛細血管力による生物学的基板の再構築の例

主要な成果:

  • 表面の緊張から生じる毛細血管力は,細胞環境内で作業を行うことができます.
  • これらの力は多相コンデンサートの構造に役割を果たします.
  • 毛細血管の力は 生物学的基質を改造し 細胞のプロセスに影響を与えます

結論:

  • 毛細血管の力は 細胞内での力発生の 重要なメカニズムですが あまり評価されていません
  • 凝縮毛細血管の橋渡しを理解する 柔らかい物質の物理と細胞生物学
  • 凝縮毛細血管の生物分子の決定因子を特定することは,将来の重要な研究方向です.