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Nanosecond Laser Etching of Aluminum-Plated Composite Materials Applied to Frequency Selective Surfaces

Large-Beam Picosecond Interference Patterning of Metallic Substrates

HiLASE Centre, Institute of Physics, Czech Academy of Sciences, Za Radnici 828, 25241 Dolni Brezany, Czech Republic
Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehova 7, 115 19 Prague, Czech Republic
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;
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.

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.

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.

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