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Related Concept Videos

Van der Waals Interactions01:24

Van der Waals Interactions

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.
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...
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...
Factors Influencing Attraction I: Proximity01:22

Factors Influencing Attraction I: Proximity

Proximity plays a fundamental role in shaping interpersonal attraction by increasing opportunities for interaction and fostering familiarity. Research consistently demonstrates that individuals are more likely to form social bonds with those who are physically closer to them, whether in residential settings, workplaces, or educational institutions. This effect is largely driven by the increased frequency of encounters, which facilitates the development of friendships and romantic...
Noncovalent Attractions in Biomolecules02:35

Noncovalent Attractions in Biomolecules

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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Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

Long-ranged attraction between disordered heterogeneous surfaces.

Gilad Silbert1, Dan Ben-Yaakov, Yael Dror

  • 1Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel.

Physical Review Letters
|December 11, 2012
PubMed
Summary
This summary is machine-generated.

Heterogeneous surfaces with random charge domains exhibit strong, long-range attraction in water, exceeding van der Waals forces. This arises from interaction asymmetry between charged domains, even on neutral surfaces.

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Last Updated: May 16, 2026

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Published on: February 11, 2020

Area of Science:

  • Surface science
  • Colloid and interface science
  • Physical chemistry

Background:

  • Interactions between uniformly charged surfaces in aqueous media are well-established.
  • Real-world surfaces are often heterogeneous and disordered, deviating from uniform charge distributions.
  • Understanding forces between disordered surfaces is crucial for various applications.

Purpose of the Study:

  • To investigate the interaction forces between heterogeneous surfaces with random charge domains in aqueous media.
  • To determine if long-range attraction exists between such surfaces and quantify its strength.
  • To elucidate the underlying mechanism for attraction in disordered surface systems.

Main Methods:

  • Theoretical modeling and simulation of charged domain interactions.
  • Analysis of electrostatic and van der Waals forces.
  • Investigation of surface heterogeneity and charge disorder effects.

Main Results:

  • Two heterogeneous surfaces with random charge domains exhibit a strong, long-range attraction in water.
  • This attraction is orders of magnitude stronger than van der Waals forces.
  • The attraction persists even without charge correlations and for overall neutral surfaces.

Conclusions:

  • Inherent interaction asymmetry between equally and oppositely charged domains drives strong attraction.
  • Disordered surface charge is a general mechanism for significant interfacial attraction in aqueous environments.
  • Findings challenge conventional understanding of surface interactions and open new avenues for controlling interfacial forces.