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Laser-induced periodic surface structures: When electromagnetics drives hydrodynamics

  • Laser-induced Periodic Surface Structures (LIPSS, ripples) are a universal phenomenon and can be generated in a contactless, single-step process on almost any material upon irradiation of solids with intense laser radiation. Nowadays processing rates of up to m^2/min are enabling new industrial applications in medicine, optics, tribology, biology, etc. Depending on the specific type of LIPSS, their structural sizes typically range from several micrometers down to less than 100 nanometers – far beyond the optical diffraction limit – while their orientations exhibit a clear correlation with the local polarization direction of the laser radiation. From a theoretical point of view, however, a vivid, controversial, and long-lasting debate has emerged during the last two decades, whether LIPSS originate from electromagnetic effects (seeded already during the laser irradiation) – or whether they emerge from matter reorganization processes (distinctly after the laser irradiation). ThisLaser-induced Periodic Surface Structures (LIPSS, ripples) are a universal phenomenon and can be generated in a contactless, single-step process on almost any material upon irradiation of solids with intense laser radiation. Nowadays processing rates of up to m^2/min are enabling new industrial applications in medicine, optics, tribology, biology, etc. Depending on the specific type of LIPSS, their structural sizes typically range from several micrometers down to less than 100 nanometers – far beyond the optical diffraction limit – while their orientations exhibit a clear correlation with the local polarization direction of the laser radiation. From a theoretical point of view, however, a vivid, controversial, and long-lasting debate has emerged during the last two decades, whether LIPSS originate from electromagnetic effects (seeded already during the laser irradiation) – or whether they emerge from matter reorganization processes (distinctly after the laser irradiation). This presentation reviews the currently existent theories of LIPSS. A focus is laid on the historic development of the fundamental ideas, their corresponding mathematical descriptions and numerical implementations, along with a comparison and critical assessment of the different approaches.zeige mehrzeige weniger

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  • Bonse_ALT21_LM-I-14_Invited_publica.pdf
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  • 2021-Bonse_ALT-Proceedings_25.pdf
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Metadaten
Autor*innen:Jörn BonseORCiD
Koautor*innen:Marek Mezera, Camilo Florian, Jörg Krüger, S. Gräf
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2021
Organisationseinheit der BAM:6 Materialchemie
6 Materialchemie / 6.2 Material- und Oberflächentechnologien
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik
Freie Schlagwörter:Electromagnetic scattering; Laser-induced periodic surface structures, LIPSS; Matter reorganization
Themenfelder/Aktivitätsfelder der BAM:Energie
Material
Material / Nano
Veranstaltung:28th International Conference on Advanced Laser Technologies (ALT'21)
Veranstaltungsort:Online meeting
Beginndatum der Veranstaltung:06.09.2021
Enddatum der Veranstaltung:10.09.2021
DOI:10.24412/cl-35039-2021-21-25-25
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:08.09.2021
Referierte Publikation:Nein
Eingeladener Vortrag:Nein
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