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Intermolecular Forces and Physical Properties02:56

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Intermolecular Forces03:13

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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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Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
11:20

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Published on: August 15, 2018

From superhydrophobicity to icephobicity: forces and interaction analysis.

Vahid Hejazi1, Konstantin Sobolev, Michael Nosonovsky

  • 1College of Engineering & Applied Science, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211, United States.

Scientific Reports
|July 13, 2013
PubMed
Summary

Icephobicity differs from superhydrophobicity, as surfaces that repel water may still strongly adhere ice. This study defines icephobicity based on low ice adhesion and delayed ice crystallization for effective anti-icing solutions.

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11:20

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Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
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08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

Area of Science:

  • Materials Science
  • Surface Science
  • Tribology

Background:

  • The term "icephobicity" is newly emerging, prompting discussions on its relationship with superhydrophobicity.
  • While both phenomena involve repellency, direct correlation between icephobicity and superhydrophobicity is not established.
  • Similarities exist in hydrophobic interactions, protein folding, and ice crystal formation mechanisms.

Purpose of the Study:

  • To differentiate ice adhesion from water adhesion using force balance analysis.
  • To investigate why superhydrophobic surfaces are not necessarily icephobic.
  • To propose a comprehensive definition for icephobicity encompassing anti-icing and de-icing applications.

Main Methods:

  • Force balance analysis to compare ice and water adhesion.
  • Experimental evaluation of anti-icing properties on diverse surfaces.
  • Analysis of ice crystallization kinetics and adhesion strength.

Main Results:

  • Ice adhesion is fundamentally different from water adhesion.
  • Superhydrophobic surfaces do not guarantee ice-repellent properties.
  • Experimental data reveal varying anti-icing performance across different surface types.

Conclusions:

  • Icephobicity is distinct from superhydrophobicity, requiring specific strategies for effective anti-icing.
  • A proposed definition of icephobicity includes low ice adhesion strength and delayed ice crystallization.
  • Understanding these differences is crucial for developing advanced de-icing technologies.