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Related Concept Videos

Adhesion01:14

Adhesion

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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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Contact Angle01:13

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When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
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Surface Tension, Capillary Action, and Viscosity02:57

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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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Surface Tension of Fluid01:22

Surface Tension of Fluid

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Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies...
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Cohesion01:07

Cohesion

60.0K
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...
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Rise of Liquid in a Capillary Tube01:18

Rise of Liquid in a Capillary Tube

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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.
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Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
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Reply to Comment on "Solid-Liquid Work of Adhesion".

S Gulec1, S Yadav1, R Das1

  • 1The Department of Chemical Engineering, Lamar University , Beaumont Texas 77705, United States.

Langmuir : the ACS Journal of Surfaces and Colloids
|November 14, 2017
PubMed
Summary
This summary is machine-generated.

This study compares two interpretations of the solid-liquid work of adhesion. We clarify differences to improve physical understanding of interfacial phenomena.

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Area of Science:

  • Materials Science
  • Physical Chemistry
  • Surface Science

Background:

  • The solid-liquid work of adhesion is crucial for understanding interfacial phenomena.
  • Extrand's interpretation offers a new perspective on this concept.
  • Tadmor and Coworkers' work provides a foundational model.

Purpose of the Study:

  • To compare Extrand's interpretation with the existing model by Tadmor and Coworkers.
  • To elucidate the key differences between the two approaches.
  • To foster a clearer physical understanding of solid-liquid adhesion.

Main Methods:

  • Comparative analysis of theoretical frameworks.
  • Identification and explanation of discrepancies in interpretations.
  • Discussion of implications for physical understanding.

Main Results:

  • Extrand's interpretation presents a distinct viewpoint on solid-liquid adhesion.
  • Specific differences in the models are highlighted.
  • The comparison aims to resolve ambiguities and enhance clarity.

Conclusions:

  • The comparative analysis provides a clearer perspective on the solid-liquid work of adhesion.
  • Understanding these differences is vital for advancing interfacial science.
  • This work facilitates a more robust physical interpretation of adhesion phenomena.