Atmospheric pressure plasma-assisted femtosecond laser engraving of aluminium
| Autor: | Jennifer Hoffmeister, Wolfgang Viöl, Günter Flachenecker, Wolfgang Schade, Stephan Wieneke, Stephan Brückner, Christoph Gerhard, Daniel Tasche, Thomas Gimpel |
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| Přispěvatelé: | Publica |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Acoustics and Ultrasonics medicine.medical_treatment chemistry.chemical_element Atmospheric-pressure plasma 02 engineering and technology Dielectric barrier discharge dielectric barrier discharge 01 natural sciences 010309 optics Aluminium 0103 physical sciences medicine Composite material Argon Atmospheric pressure Laser engraving aluminium 021001 nanoscience & nanotechnology Condensed Matter Physics Ablation atmospheric pressure plasma Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Femtosecond micro-structuring ddc:621 laser-plasma-processing 0210 nano-technology femtosecond laser machining |
| Zdroj: | Journal of Physics D: Applied Physics. 51:175201 |
| ISSN: | 1361-6463 0022-3727 |
| DOI: | 10.1088/1361-6463/aab6e6 |
| Popis: | In this contribution, we report on the impact of direct dielectric barrier discharge argon plasma at atmospheric pressure on femtosecond laser engraving of aluminium. It is shown that the assisting plasma strongly affects the surface geometry and formation of spikes of both laser-engraved single lines and patterns of adjacent lines with an appropriate overlap. Further, it was observed that the overall ablation depth is significantly increased in case of large-scale patterning whereas no notable differences in ablation depth are found for single lines. Several possible mechanisms and underlying effects of this behaviour are suggested. The increase in ablation depth is supposed to be due to a plasma-induced removal of debris particles from the cutting point via charging and oxidation as supported by EDX analysis of the re-solidified debris. Furthermore, the impact of a higher degree of surface wrinkling as well as direct interactions of plasma species with the aluminium surface on the ablation process are discussed. |
| Databáze: | OpenAIRE |
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