Hannover 2020 – scientific programme
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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 5: Laser Systems and Laser Applications
K 5.4: Talk
Wednesday, March 11, 2020, 11:45–12:00, f428
Micro- and nanostructuring of metal surfaces by ultra-short laser pulses — •Pierre Lorenz1, Marcel Himmerlich2, Martin Ehrhardt1, Karolina Bogdanowicz2, Mauro Taborelli2, Bela Hopp3, Bing Han4, and Klaus Zimmer1 — 1Leibniz Institute of Surface Engineering (IOM), Leipzig, Germany — 2CERN - European Organization for Nuclear Research, Switzerland — 3University of Szeged, Szeged, Hungary — 4Nanjing University of Science and Technology, Nanjing, China
The ultra-short laser irradiation of metal surfaces e.g. copper, nickel, chromium allows the direct adjustment of the surface topography in the micrometer range as well as the sub-µm periodic structuring due to the LIPSS (laser-induced periodic surface structures) formation process. Furthermore, laser treatment with high laser fluences allows the nanostructuring of the metal surface where the shape and chemical composition of the formed structures depends on the laser parameter as well as on the environment conditions (gas pressure and composition). The morphology and composition of the modified surface are analyzed by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The laser treatment is performed on plane and curved surfaces up to several 100 cm2. Furthermore, the different applications of the fabricated structures will be presented.