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Large-Area Fabrication of LIPSS for Wetting Control Using Multi-Parallel Femtosecond Laser Processing
Simonas Indrišiūnas1, Evaldas Svirplys1, Mindaugas Gedvilas1
1Department of Laser Technologies (LTS), Center for Physical Sciences and Technology (FTMC), Savanorių Ave. 231, LT-02300 Vilnius, Lithuania.
Materials (Basel, Switzerland)
|August 26, 2022
Summary
Researchers precisely controlled stainless steel
Area of Science:
- Materials Science
- Surface Engineering
- Laser Processing
Background:
- Controlling surface wettability is crucial for various applications.
- Laser-induced periodic surface structures (LIPSS) offer a method for surface modification.
Purpose of the Study:
- To investigate the control of wetting properties on stainless steel using femtosecond laser texturing.
- To explore the relationship between LIPSS parameters and wettability.
Main Methods:
- Utilized parallel processing with an 8x8 array of 64-femtosecond laser beams.
- Scanned the laser array to create uniform LIPSS over large areas.
- Measured static water contact angles and LIPSS periods.
Main Results:
- Achieved tunable wettability on stainless steel, from ~63° to superhydrophobic (>150°).
- Investigated the dependence of contact angle and LIPSS period on processing parameters.
- Analyzed the relationship between wettability and LIPSS characteristics in the Fourier plane.
Conclusions:
- Femtosecond laser texturing enables precise control over stainless steel surface wettability.
- LIPSS parameters significantly influence the resulting surface properties and wettability.
- This technique offers a pathway to engineer superhydrophobic stainless steel surfaces.
