Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
K: Fachverband Kurzzeit- und angewandte Laserphysik
K 4: Poster
K 4.10: Poster
Dienstag, 10. März 2020, 16:30–18:30, f428
LIPSS guided by photolithographic pre-structured polymer films — •Martin Ehrhardt1, Shengying Lai1,2, Pierre Lorenz1, and Klaus Zimmer1 — 1Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, 04318 Leipzig, Germany — 2School of Science, Nanjing University of Science & Technology, Xiaolingwei 200, Nanjing 210094, China
The formation of LIPSS (Laser induced periodic surface structures) was discussed and investigated in detail in the last decades. However, only few studies were published dealing with the guiding of LIPSS on pre-structured substrates. In the present study, LIPSS formation on polymer dot and line structures is presented. The LIPSS are induced by a partial polarized excimer laser radiation (t=25ns, λ=248nm). The degree of order of the LIPSS are influenced by the shape and geometry of the polymer pre-structures as well as the alignment of the laser polarization to the pre-structure direction. Several hundred micrometers long LIPSS were observed using an optimized adjustment of the alignment as well as an adapted laser parameter set (fluence and laser pulse number). The highly ordered LIPSS formation process can accept alignment mismatches up to 10 °. The LIPSS are induced at the top and the side wall of the pre-structured polymer dependent on the applied laser parameters, respectively.