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Updated: Sep 4, 2025

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

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Robust Superhydrophobic Surfaces via the Sand-In Method.

Weiyin Chen1, Winston Wang1, Duy Xuan Luong1

  • 1Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States.

ACS Applied Materials & Interfaces
|July 21, 2022
PubMed
Summary

Researchers developed a simple, solvent-free sanding method to create durable superhydrophobic surfaces. These robust surfaces offer excellent water repellency and anti-icing properties, even after extensive testing and repair.

Keywords:
anti-icing abilitycontact anglerobustsand-in methodsuperhydrophobictribofilm

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Area of Science:

  • Materials Science
  • Surface Chemistry

Background:

  • Superhydrophobic surfaces are crucial for self-cleaning, anti-icing, and drag reduction.
  • Achieving desired properties requires large contact angles (>150°) and low hysteresis (<10°).
  • Existing methods often involve complex fabrication and lack temporal/mechanical stability.

Purpose of the Study:

  • To develop a simple, robust method for fabricating superhydrophobic surfaces.
  • To enhance the stability and applicability of superhydrophobic materials.
  • To investigate the repairability and tunable wettability of these surfaces.

Main Methods:

  • A one-step, solvent-free sand-in method was employed.
  • Powder additives were used to modify various substrates.
  • Surface characterization techniques were used to analyze microstructures and nanoscale asperities.

Main Results:

  • Fabricated surfaces achieved apparent contact angles up to ~163.8° and hysteresis <5°.
  • Superhydrophobicity demonstrated high durability against tape tests, prolonged humidity, and heat.
  • Surfaces exhibited enhanced anti-icing properties, including longer freezing times and reduced ice adhesion.

Conclusions:

  • The sand-in method offers a facile and robust route to superhydrophobic surfaces.
  • The developed surfaces show significant potential for anti-icing and self-cleaning applications.
  • The method allows for tunable wettability and easy repair of surface damage.