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Journal Articles Applied physics. A, Materials science & processing Year : 2022

Tailoring the surface morphology of Ni at the nanometric scale by ultrashort laser pulses

Abstract

Ultrafast-laser irradiated surfaces are self-organizing systems that form intricated micropatterns and nanopatterns. Different shapes of randomly and periodically dispersed nanostructures emerge from a homogenous metal surface, resulting in a remarkable display of dissipative structures. Under femtosecond laser irradiation with a controlled amount of energy, the formation of nanobreath-figure, nanocrosshatch, nanopeaks, nanohumps, nanobumps, nanocavities and nanolabyrinthine patterns are reported. The fabrication of these 2D different nanostructures may allow for novel surface functionalizations aimed at controlling mechanical, biological, optical, or chemical surface characteristics on a nanometric scale. We demonstrate that using crossed-polarized double laser pulses adds a new dimension to the nanostructuring process since the laser energy dose and multi-pulse feedback modify the energy gradient distribution, crossing key levels for surface self-organization regimes.
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Dates and versions

emse-04515682 , version 1 (21-03-2024)

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Anthony Nakhoul, Claire Maurice, Nicolas Faure, Florence Garrelie, Florent Pigeon, et al.. Tailoring the surface morphology of Ni at the nanometric scale by ultrashort laser pulses. Applied physics. A, Materials science & processing, 2022, 128 (10), pp.933. ⟨10.1007/s00339-022-06046-2⟩. ⟨emse-04515682⟩
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