Large-beam picosecond interference patterning of metallic substrates

0534162 - FZÚ 2021 RIV CH eng J - Článek v odborném periodiku
Hauschwitz, Petr - Jochcová, D. - Jagdheesh, Radhakrishnan - Cimrman, Martin - Brajer, Jan - Rostohar, Danijela - Mocek, Tomáš - Kopeček, Jaromír - Lucianetti, Antonio - Smrž, Martin
Large-beam picosecond interference patterning of metallic substrates.
Materials. Roč. 13, č. 20 (2020), s. 1-11, č. článku 4676. E-ISSN 1996-1944
Grant CEP: GA MŠMT EF15_006/0000674; GA MŠMT LO1602
GRANT EU: European Commission(XE) 739573 - HiLASE CoE
Grant ostatní: OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institucionální podpora: RVO:68378271
Klíčová slova: Perla laser * interference patterning * LIPSS * superhydrophobicity
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 3.623, rok: 2020
Způsob publikování: Open access

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
Trvalý link: http://hdl.handle.net/11104/0312392