Authors: Wei Wang (SurFunction GmbH), Bogdan Voisiat (TU Dresden), Dominik Britz (SurFunction GmbH), Andrés Fabián Lasagni (TU Dresden) 

🔗 The publication is available online: https://doi.org/10.1016/j.matlet.2025.138279 

The study explores how Direct Laser Interference Patterning (DLIP) can be implemented using a high-power multimode nanosecond fiber laser through the ELIPSYS® system developed by SurFunction GmbH. This approach enables precise periodic microstructures to be fabricated over large areas, demonstrating the scalability of DLIP for industrial use. 

Key Focus:
Developing a high-speed, high-precision DLIP process suitable for industrial-scale microstructuring. 

Key Outputs: 

• Realization of interference patterns with 24 µm periodicity over a 0.6 mm focus range
• Identification of an optimal process window for uniform structures (depth variation < 15 %)
• Demonstrated scalability for large and complex geometries
• Validation of fiber-laser-based DLIP as a reliable and efficient manufacturing method 

These findings mark a major step toward integrating laser interference patterning into industrial manufacturing, supporting the Made in Europe initiative by strengthening Europe’s technological and production capabilities through innovation and research.