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Related Concept Videos

  • Engineering
  • Environmental Engineering
  • Air Pollution Modelling And Control
  • Wettability Investigation Of Laser-crafted Antiwetting/superwetting Surfaces On A Polyethylene-painted Aluminum Plate For Moisture Management.
  • Engineering
  • Environmental Engineering
  • Air Pollution Modelling And Control
  • Wettability Investigation Of Laser-crafted Antiwetting/superwetting Surfaces On A Polyethylene-painted Aluminum Plate For Moisture Management.

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    Wettability Investigation of Laser-Crafted Antiwetting/Superwetting Surfaces on a Polyethylene-Painted Aluminum Plate for Moisture Management.

    Huan Liu1, Minseong Kim1, Yang Xu1

    • 1Center for Smart Manufacturing, Division of Integrative Systems and Design, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR 999077, China.

    ACS Applied Materials & Interfaces
    |May 9, 2025

    View abstract on PubMed

    Summary
    This summary is machine-generated.

    This study presents a simple laser etching method to create advanced surfaces with superhydrophobic and superhydrophilic properties. This technique offers a sustainable and scalable solution for moisture management in humid environments.

    Keywords:
    isotropic superhydrophobicitylaser etchingmoisture managementsuperhydrophilicitywetting mechanism

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    Area of Science:

    • Materials Science
    • Surface Engineering
    • Nanotechnology

    Background:

    • Rising atmospheric humidity due to sea warming causes infrastructure damage and discomfort.
    • Existing surface engineering for antiwetting and dehumidification faces challenges in large-scale, sustainable production.
    • Need for efficient and industrially viable methods to create advanced wetting surfaces.

    Purpose of the Study:

    • To develop a straightforward, chemical-free laser etching method for creating dual superhydrophobic and superhydrophilic surfaces on aluminum.
    • To investigate the mechanisms governing wettability reversal and optimize surface properties.
    • To assess the practical applications and industrial potential of the developed surface engineering technique.

    Main Methods:

    • Utilized a laser etching technique on commercially available aluminum plates.
    • Controlled machine parameters and laser beam energy to achieve desired wetting properties.
    • Conducted mechanism investigations, including surface tension analysis and roughness correlation with contact angles.
    • Evaluated antiwetting/dehumidifying capabilities and designed a moisture-capturing system.

    Main Results:

    • Achieved outstanding isotropic superhydrophobicity (WCA = 162.81 ± 2.26°, WSA = 6.06 ± 0.44°) and superhydrophilicity (WCA ≈ 0°).
    • Demonstrated that surface tension increase facilitates wettability reversal, while surface roughness evolution dictates superhydrophobicity/superhydrophilicity.
    • Confirmed the effectiveness of the surfaces in antiwetting and dehumidification under various humid conditions.

    Conclusions:

    • The laser etching method is a versatile, one-step fabrication technique for large-scale production of customized wetting surfaces.
    • The developed surfaces show significant promise for industrial applications in moisture management.
    • This approach offers a cost-effective and sustainable alternative to conventional methods.