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Article

Large-Beam Picosecond Interference Patterning of Metallic Substrates

1
HiLASE Centre, Institute of Physics, Czech Academy of Sciences, Za Radnici 828, 25241 Dolni Brezany, Czech Republic
2
Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehova 7, 115 19 Prague, Czech Republic
3
Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Materials 2020, 13(20), 4676; https://doi.org/10.3390/ma13204676
Received: 20 September 2020 / Revised: 14 October 2020 / Accepted: 17 October 2020 / Published: 20 October 2020
(This article belongs to the Special Issue Advances in Laser Processing)
In this paper, we introduce a method to efficiently use a high-energy pulsed 1.7 ps HiLASE Perla laser system for two beam interference patterning. The newly developed method of large-beam interference patterning permits the production of micro and sub-micron sized features on a treated surface with increased processing throughputs by enlarging the interference area. The limits for beam enlarging are explained and calculated for the used laser source. The formation of a variety of surface micro and nanostructures and their combinations are reported on stainless steel, invar, and tungsten with the maximum fabrication speed of 206 cm2/min. The wettability of selected hierarchical structures combining interference patterns with 2.6 µm periodicity and the nanoscale surface structures on top were analyzed showing superhydrophobic behavior with contact angles of 164°, 156°, and 150° in the case of stainless steel, invar, and tungsten, respectively. View Full-Text
Keywords: Perla laser; interference patterning; LIPSS; superhydrophobicity Perla laser; interference patterning; LIPSS; superhydrophobicity
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MDPI and ACS Style

Hauschwitz, P.; Jochcová, D.; Jagdheesh, R.; Cimrman, M.; Brajer, J.; Rostohar, D.; Mocek, T.; Kopeček, J.; Lucianetti, A.; Smrž, M. Large-Beam Picosecond Interference Patterning of Metallic Substrates. Materials 2020, 13, 4676. https://doi.org/10.3390/ma13204676

AMA Style

Hauschwitz P, Jochcová D, Jagdheesh R, Cimrman M, Brajer J, Rostohar D, Mocek T, Kopeček J, Lucianetti A, Smrž M. Large-Beam Picosecond Interference Patterning of Metallic Substrates. Materials. 2020; 13(20):4676. https://doi.org/10.3390/ma13204676

Chicago/Turabian Style

Hauschwitz, Petr, Dominika Jochcová, Radhakrishnan Jagdheesh, Martin Cimrman, Jan Brajer, Danijela Rostohar, Tomáš Mocek, Jaromír Kopeček, Antonio Lucianetti, and Martin Smrž. 2020. "Large-Beam Picosecond Interference Patterning of Metallic Substrates" Materials 13, no. 20: 4676. https://doi.org/10.3390/ma13204676

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