Initial Morphology and Feedback Effects on Laser-Induced Periodic Nanostructuring of Thin-Film Metallic Glasses - Archive ouverte HAL Access content directly
Journal Articles Nanomaterials Year : 2021

Initial Morphology and Feedback Effects on Laser-Induced Periodic Nanostructuring of Thin-Film Metallic Glasses

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Mathilde Prudent
  • Function : Author
  • PersonId : 1099180
Alejandro Borroto
  • Function : Author
  • PersonId : 1099181
Jean-François Pierson
Florence Garrelie
  • Function : Author
  • PersonId : 834080

Abstract

Surface nanostructuring by femtosecond laser is an efficient way to manipulate surface topography, creating advanced functionalities of irradiated materials. Thin-film metallic glasses obtained by physical vapor deposition exhibit microstructures free from grain boundaries, crystallites and dislocations but also characterized by a nanometric surface roughness. These singular properties make them more resilient to other metals to form laser-induced nanopatterns. Here we investigate the morphological response of Zr65Cu35 alloys under ultrafast irradiation with multipulse feedback. We experimentally demonstrate that the initial columnar microstructure affects the surface topography evolution and conditions the required energy dose to reach desired structures in the nanoscale domain. Double pulses femtosecond laser irradiation is also shown to be an efficient strategy to force materials to form uniform nanostructures even when their thermomechanical properties have a poor predisposition to generate them.
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Dates and versions

ujm-03230420 , version 1 (19-05-2021)

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Mathilde Prudent, Florent Bourquard, Alejandro Borroto, Jean-François Pierson, Florence Garrelie, et al.. Initial Morphology and Feedback Effects on Laser-Induced Periodic Nanostructuring of Thin-Film Metallic Glasses. Nanomaterials, 2021, 11 (5), pp.1076. ⟨10.3390/nano11051076⟩. ⟨ujm-03230420⟩
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