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Hydrodynamic instability and self-organization of a submicron relief on metal surfaces upon femtosecond laser exposure in liquids |
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| Authors: | A A Ionin S I Kudryashov A O Levchenko S V Makarov I N Saraeva A A Rudenko A V Butsen V S Burakov |
| Institution: | 1.Lebedev Physical Institute,Russian Academy of Sciences,Moscow,Russia;2.National Research Nuclear University MEPhI (Moscow Engineering Physics Institute),Moscow,Russia;3.Stepanov Institute of Physics,National Academy of Sciences of Belarus,Minsk,Belarus |
| Abstract: | Multishot exposure of nickel and iron surfaces by loosely focused femtosecond laser pulses in isopropyl alcohol resulted in quasi-regular arrays of submicron spikes and other intermediate self-organized structures. Such self-organized surface relief is considered to be formed via hydrodynamic instability of molten metallic surfaces in their contact with a near-critical alcohol vapor layer with the pressure of about 5 MPa. |
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