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Updated: Jun 27, 2025

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment
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Wetting Behavior Driven by Surface Morphology Changes Induced by Picosecond Laser Texturing.

Carmelo Corsaro1, Gabriele Orlando1, Gabriele Costa1

  • 1Department of Mathematical and Computational Sciences, Physics Science and Earth Science, University of Messina, Viale F. Stagno d'Alcontres 31, I-98166 Messina, Italy.

Materials (Basel, Switzerland)
|April 27, 2024
PubMed
Summary

Laser surface texturing (LST) creates tunable hydrophobic metal surfaces by adjusting parameters. This study optimizes LST for controlled wetting and explores environmental dust effects on textured surfaces.

Keywords:
air humiditylaser-induced periodic surface structuresmetal surfacessurface texturingsurface wettability

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Nanotechnology

Background:

  • Laser surface texturing (LST) enhances adhesion and creates hydrophobic surfaces.
  • Surface polarity and wetting properties are controlled by LST parameters.
  • Developing controlled hydrophobic surfaces is crucial for various applications.

Purpose of the Study:

  • Systematically select laser and scan head parameters for high-quality metal surface topography.
  • Correlate texturing parameters with wetting properties for technological applications.
  • Investigate environmental dust effects on picosecond laser-textured surfaces.

Main Methods:

  • Utilized scanning electron microscopy and profilometry for surface analysis.
  • Employed laser surface texturing (LST) on metal-based materials (titanium, nickel).
  • Monitored ambient conditions and environmental dust influence on surface properties.

Main Results:

  • Achieved periodic microchannels with laser-induced periodic surface structures (LIPSS).
  • Observed a wide range of water contact angles (20°–100°) based on material.
  • Identified challenges in wettability transition time and environmental influences.

Conclusions:

  • LST offers precise control over surface topography and wetting characteristics of metals.
  • Optimized LST parameters are key for conformal layer growth on textured surfaces.
  • Environmental dust impacts the long-term stability and properties of laser-textured surfaces.