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Related Concept Videos

Adhesion01:14

Adhesion

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 glass...
Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

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...
Surface Tension01:24

Surface Tension

Surface tension is defined as the force per unit length (γ) acting along the surface of a liquid. It arises due to strong intermolecular forces of attraction. A molecule located inside the bulk of the liquid is surrounded by other molecules and experiences equal forces in all directions. However, a molecule at the surface experiences unbalanced forces because there are more neighboring molecules below than above. This creates a net inward force that pulls surface molecules toward the interior,...
Cell Adhesion Molecules - Types and Functions01:20

Cell Adhesion Molecules - Types and Functions

Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
The Integrin family of proteins is primarily  involved in a...
Intermolecular Forces and Physical Properties02:56

Intermolecular Forces and Physical Properties

Cohesion01:07

Cohesion

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 surface,...

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Updated: Jun 20, 2026

Adhesion Frequency Assay for In Situ Kinetics Analysis of Cross-Junctional Molecular Interactions at the Cell-Cell Interface
13:22

Adhesion Frequency Assay for In Situ Kinetics Analysis of Cross-Junctional Molecular Interactions at the Cell-Cell Interface

Published on: November 2, 2011

Adhesion Depends on Interfacial Strength: Time and Temperature Effects.

Shi-Qing Wang1, Zehao Fan1, Tianji Pang1

  • 1School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States.

Langmuir : the ACS Journal of Surfaces and Colloids
|June 18, 2026
PubMed
Summary
This summary is machine-generated.

Polymer adhesion is governed by interfacial strength, not just energy. A new tensile adhesion test reveals peel strength directly correlates with this interfacial strength, offering a clearer understanding of adhesive detachment. This finding impacts polymer adhesion research.

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Adhesion Frequency Assay for In Situ Kinetics Analysis of Cross-Junctional Molecular Interactions at the Cell-Cell Interface
13:22

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09:48

Investigating Single Molecule Adhesion by Atomic Force Spectroscopy

Published on: February 27, 2015

Area of Science:

  • Materials Science
  • Polymer Science
  • Adhesion Science

Background:

  • Conventional models describe adhesive peeling using adhesion energies.
  • Energy-based adhesion models struggle to explain peel strength exceeding thermodynamic work of adhesion.
  • A gap exists in understanding the fundamental drivers of polymer adhesion and detachment.

Purpose of the Study:

  • To experimentally demonstrate that polymer adhesion is governed by interfacial strength.
  • To introduce and validate a tensile adhesion test for estimating interfacial strength.
  • To establish a new correlation between peel strength and interfacial strength.

Main Methods:

  • Performed tensile adhesion tests on polymer-substrate specimens at various rates and temperatures.
  • Measured adhesion strength (engineering stress at detachment) during tensile tests.
  • Correlated results with conventional peeling tests to compare peel strength dependence on speed and temperature.

Main Results:

  • Demonstrated that polymer adhesion is governed by interfacial strength (σinterf), defined by the adhesive-substrate pair.
  • Showed that peel strength (Γp) correlates with adhesion strength (σadh) via a characteristic length scale (P), not thermodynamic work of adhesion (Γ0).
  • Observed that both peeling and tensile adhesion tests exhibit similar dependencies of stress on rate and temperature, indicating activated processes.

Conclusions:

  • Polymer adhesion is fundamentally controlled by interfacial strength, providing a more accurate physical basis than energy-based models.
  • The tensile adhesion test is a viable method for quantifying interfacial strength and understanding adhesion phenomena.
  • Peel strength is directly linked to the polymer-substrate interfacial strength, offering new insights into adhesive behavior.