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Microfabrication and Surface Functionalization of Soda Lime Glass through Direct Laser Interference Patterning
Marcos Soldera1,2, Sabri Alamri3, Paul Alexander Sürmann3
1Institute of Manufacturing Science and Engineering, Technische Universität Dresden, George-Bähr-Str. 3c, 01069 Dresden, Germany.
Nanomaterials (Basel, Switzerland)
|January 12, 2021
Summary
Researchers developed a new laser technique to create micro- and nanostructures on transparent glass surfaces. This method enhances glass properties, making them super-hydrophilic and capable of diffracting light, opening new applications in optics and beyond.
Area of Science:
- Materials Science
- Optics
- Surface Engineering
Background:
- Glasses possess valuable properties for industries like microelectronics and biomedicine.
- Surface functionalization via nano/micropatterning can enhance glass performance.
- Laser structuring of transparent materials with visible light, especially for sub-10 µm features, remains challenging.
Purpose of the Study:
- To investigate direct laser patterning of transparent soda lime glass using visible ps-pulsed laser radiation.
- To achieve sub-10 µm feature sizes and explore the resulting surface properties.
- To optimize the process for high-quality textures with enhanced functionality.
Main Methods:
- Utilized interference-based optical setups for direct glass patterning.
- Employed picosecond (ps)-pulsed laser radiation in the visible spectrum.
- Investigated non-linear absorption mechanisms for transparent material processing.
Main Results:
- Successfully fabricated line- and dot-like micro-patterns with spatial periods from 2.3 to 9.0 µm.
- Observed laser-induced periodic surface structures (LIPSS) with feature sizes around 300 nm within microstructures.
- Achieved significantly enhanced surface properties, including super-hydrophilicity.
- Demonstrated that micropatterns function as relief diffraction gratings with efficiencies exceeding 30%.
Conclusions:
- Direct laser structuring of transparent glass with visible ps-pulsed lasers is feasible for creating sub-10 µm features.
- The developed method effectively modifies glass surface properties, inducing super-hydrophilicity and diffraction capabilities.
- Optimized process parameters yield high-quality, functionalized glass surfaces for advanced applications.
