Formation of microstructures on Ni film surface by nanosecond laser irradiation

The formation of microstructures on a Ni film surface by nanosecond laser irradiation was investigated. The microstructures were formed by the interaction between the laser-induced plume and the film surface. The laser process was conducted in air and under slight vacuum pressure. The microstructure...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2018-03, Vol.124 (3), p.1-6, Article 227
Main Authors: Koda, Kazuki, Kobayashi, Wataru, Imai, Hirokazu, Tsukamoto, Masahiro
Format: Article
Language:English
Subjects:
Applied physics
Characterization and Evaluation of Materials
Condensed Matter Physics
Flocculation
Irradiation
Lasers
Low pressure
Machines
Manufacturing
Materials science
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Surfaces and Interfaces
Thin Films
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Summary:The formation of microstructures on a Ni film surface by nanosecond laser irradiation was investigated. The microstructures were formed by the interaction between the laser-induced plume and the film surface. The laser process was conducted in air and under slight vacuum pressure. The microstructures were formed around the laser-irradiated area and transitioned from a layer to flocculating structures upon repeated laser irradiation. The conifer-like structure was formed by scanning the laser. In addition, it was not formed under low pressure as a result of which the confinement effect of the plume was weak. Surface and cross-sectional observation suggested that the diffusion of nanoparticles on the film surface shaped the topography of the microstructure.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-018-1635-0