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Applying Ultrashort Pulsed Direct Laser Interference Patterning for Functional Surfaces.

Daniel Wyn Müller1, Tobias Fox2, Philipp G Grützmacher2

  • 1Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany. daniel.mueller@uni-saarland.de.

Scientific Reports
|February 29, 2020
PubMed
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Ultrashort Pulsed Direct Laser Interference Patterning (USP-DLIP) creates intricate hierarchical surface structures on diverse materials. This advanced laser technique enables precise control over micro- and nano-scale topographies for tailored material properties.

Area of Science:

  • Surface Engineering
  • Materials Science
  • Laser Processing

Background:

  • Micro- and nano-scale surface structures significantly impact material performance and functionality.
  • Current processing techniques often limit pattern scales and material choices.
  • The morphology of surface topography is intricately linked to the processing methodology.

Purpose of the Study:

  • To generate hierarchical surface structures across micro- and sub-micrometre scales.
  • To investigate the material-specific interactions with ultrashort pulsed laser irradiation.
  • To tailor hierarchical topography and enhance process control for sub-micrometre patterns.

Main Methods:

  • Utilizing Ultrashort Pulsed Direct Laser Interference Patterning (USP-DLIP).

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  • Examining pattern morphologies in relation to material-laser interactions.
  • Combining experimental investigation with simulation for thermal interaction analysis.
  • Processing ceramic, polymer, and metallic materials including copper, brass, and stainless steel.

    • Main Results:

    • Successful generation of hierarchical surface structures on various materials.
    • Detailed understanding of pattern formation mechanisms based on material-specific thermal interactions.
    • Demonstrated ability to tailor hierarchical topography at the micro- and sub-micrometre scales.
    • Achieved enhanced process control for sub-micrometre pattern production.

    Conclusions:

    • USP-DLIP is a versatile technique for creating complex surface topographies.
    • Material-specific thermal responses are crucial for controlling pattern formation.
    • The study provides a pathway for precise engineering of surface functionalities through controlled topography.