title: Formation of crownlike and related nanostructures on thin supported gold films irradiated by single diffraction-limited nanosecond laser pulses.
abstract: A type of laser-induced surface relief nanostructure-the nanocrown-on thin metallic films was studied both experimentally and theoretically. The nanocrowns, representing a thin corrugated rim of resolidified melt and resembling well-known impact-induced water-crown splashes, were produced by single diffraction-limited nanosecond laser pulses on thin gold films of variable thickness on low-melting copper and high-melting tungsten substrates, providing different transient melting and adhesion conditions for these films. The proposed model of the nanocrown formation, based on a hydrodynamical (thermocapillary Marangoni) surface instability and described by a Kuramoto-Sivashinsky equation, envisions key steps of the nanocrown appearance and gives qualitative predictions of the acquired nanocrown parameters.
authors.affiliation: Institute of Automation and Control Processes, Far Eastern Branch, Russian Academy of Science, 690041 Vladivostok, Russia and Far-Eastern Federal University, 690041 Vladivostok, Russia.
authors.forename: Yu N
authors.initials: YN
authors.lastname: Kulchin
authors.affiliation: Institute of Automation and Control Processes, Far Eastern Branch, Russian Academy of Science, 690041 Vladivostok, Russia and Far-Eastern Federal University, 690041 Vladivostok, Russia.
authors.forename: O B
authors.initials: OB
authors.lastname: Vitrik
authors.affiliation: Institute of Automation and Control Processes, Far Eastern Branch, Russian Academy of Science, 690041 Vladivostok, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Kuchmizhak
authors.affiliation: Moscow State University, 119899 Moscow, Russia.
authors.forename: V I
authors.initials: VI
authors.lastname: Emel'yanov
authors.affiliation: P. N. Lebedev Physical Institute, Russian Academy of Science, 119991 Moscow, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Ionin
authors.affiliation: P. N. Lebedev Physical Institute, Russian Academy of Science, 119991 Moscow, Russia and National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia.
authors.forename: S I
authors.initials: SI
authors.lastname: Kudryashov
authors.affiliation: P. N. Lebedev Physical Institute, Russian Academy of Science, 119991 Moscow, Russia.
authors.forename: S V
authors.initials: SV
authors.lastname: Makarov
mesh_terms: D003300:Copper; D017612:Gold Compounds; D057446:Hydrodynamics; D007834:Lasers; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D049329:Nanostructures; D010165:Palladium; D013499:Surface Properties; D017973:Tungsten Compounds
chemical_list: D017612:Gold Compounds; D017973:Tungsten Compounds; D010165:Palladium; D003300:Copper