119608 20240319081011.0 doi 10.3390/nano12142380 sideral 130354 ART-2022-130354 eng Porta-Velilla, Luis Universidad de Zaragoza Highly regular hexagonally-arranged nanostructures on Ni-W alloy tapes upon irradiation with ultrashort UV laser pulses 2022 Access copy available to the general public Unrestricted Nickel tungsten alloy tapes (Ni-5 at% W, 10 mm wide, 80 mu m thick, biaxially textured) used in second-generation high temperature superconductor (2G-HTS) technology were laser-processed in air with ultraviolet ps-laser pulses (355 nm wavelength, 300 ps pulse duration, 250-800 kHz pulse repetition frequency). By employing optimized surface scan-processing strategies, various laser-generated periodic surface structures were generated on the tapes. Particularly, distinct surface microstructures and nanostructures were formed. These included sub-wavelength-sized highly-regular hexagonally-arranged nano-protrusions, wavelength-sized line-grating-like laser-induced periodic surface structures (LIPSS, ripples), and larger irregular pyramidal microstructures. The induced surface morphology was characterized in depth by electron-based techniques, including scanning electron microscopy (SEM), electron back scatter diffraction (EBSD), cross-sectional transmission electron microscopy (STEM/TEM) and energy dispersive X-ray spectrometry (EDS). The in-depth EBSD crystallographic analyses indicated a significant impact of the material initial grain orientation on the type of surface nanostructure and microstructure formed upon laser irradiation. Special emphasis was laid on high-resolution material analysis of the hexagonally-arranged nano-protrusions. Their formation mechanism is discussed on the basis of the interplay between electromagnetic scattering effects followed by hydrodynamic matter re-organization after the laser exposure. The temperature stability of the hexagonally-arranged nano-protrusion was explored in post-irradiation thermal annealing experiments, in order to qualify their suitability in 2G-HTS fabrication technology with initial steps deposition temperatures in the range of 773-873 K. info:eu-repo/grantAgreement/ES/DGA/T54-20R info:eu-repo/grantAgreement/EC/H2020/951730/EU/Laser-induced hierarchical micro-/nano-structures for controlled cell adhesion at implants/LaserImplant This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 951730-LaserImplant info:eu-repo/grantAgreement/ES/MICINN/AEI/PID2020-113034RB-I00 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 5.3 2022 PHYSICS, APPLIED 39 / 160 = 0.244 2022 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 51 / 107 = 0.477 2022 Q2 T2 CHEMISTRY, MULTIDISCIPLINARY 58 / 178 = 0.326 2022 Q2 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 110 / 343 = 0.321 2022 Q2 T1 0.811 2022 Chemical Engineering (miscellaneous) 2022 Q1 Materials Science (miscellaneous) 2022 Q2 7.4 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Turan, Neslihan Cubero, Alvaro Universidad de Zaragoza (orcid)0000-0002-3309-5961 Shao, Wei Li, Hongtao Fuente, German F. de la (orcid)0000-0002-0500-1745 Martinez, Elena (orcid)0000-0003-4839-5286 Larrea, Angel (orcid)0000-0002-0809-641X Castro, Miguel Universidad de Zaragoza (orcid)0000-0002-9687-4903 Koralay, Haluk Cavdar, Sukru Bonse, Joern Angurel, Luis A. Universidad de Zaragoza (orcid)0000-0001-5685-2366 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 12, 14 (2022), 2380 [23 pp.] Nanomaterials (Basel) Nanomaterials 2079-4991 10775284 http://zaguan.unizar.es/record/119608/files/texto_completo.pdf Versión publicada 2733958 http://zaguan.unizar.es/record/119608/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:119608 articulos driver 2024-03-18-15:10:07 ARTICLE