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.
Citation:
A. A. Ionin, S. I. Kudryashov, A. O. Levchenko, S. V. Makarov, I. N. Saraeva, A. A. Rudenko, A. V. Butsen, V. S. Burakov, “Hydrodynamic instability and self-organization of a submicron relief on metal surfaces upon femtosecond laser exposure in liquids”, Pis'ma v Zh. Èksper. Teoret. Fiz., 106:4 (2017), 247–251; JETP Letters, 106:4 (2017), 268–271