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Non-fluorinated superhydrophobic Al7075 aerospace alloy by ps laser processing
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SYSNO ASEP 0518948 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Non-fluorinated superhydrophobic Al7075 aerospace alloy by ps laser processing Author(s) Jagdheesh, R. (ES)
Hauschwitz, Petr (FZU-D) ORCID
Mužík, Jiří (FZU-D) ORCID
Brajer, Jan (FZU-D) ORCID
Rostohar, Danijela (FZU-D) ORCID
Jiříček, Petr (FZU-D) RID, ORCID, SAI
Kopeček, Jaromír (FZU-D) RID, ORCID
Mocek, Tomáš (FZU-D) RID, ORCID, SAINumber of authors 8 Source Title Applied Surface Science. - : Elsevier - ISSN 0169-4332
Roč. 493, Nov (2019), s. 287-293Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords ultrahydrophobic ; lotus effec ; rose petal effect ; nanostructures ; laser patterning ; non-fluorination ; nanostructure Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF15_006/0000674 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000502007800088 EID SCOPUS 85068548910 DOI https://doi.org/10.1016/j.apsusc.2019.07.035 Annotation The development of non-fluorinated super or ultrahydrophob. aerospace Al alloy(Al7075)surface by las.patterning and high vacuum process for 4h.Lamellar and lotus leaf papillae like struct. covered with nanoscale protrusions are found to be formed depends on the las. fluence and spatial shifts of las. scans.The fresh las. processed hydrophilic surface was vacuum processed to create layer of hydrocarbon to reduce the surface free energy for the wetting property transformation.The analysis of the results shows the synergistic effect of hierarchical structures and dominant presence of non-polar elements is critical for superhydrophobic property.The surface geometry is primarily responsible for the wetting property transformation by entrapping μ-volume of air to generate a composite interface of solid-gas-liquid.Micro and nanoscale(dual scale)surf.struct. are essent. for the durable and consistent superhydrophobic property with high degree of water repellence for bigger vol.of water droplets. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020 Electronic address https://doi.org/10.1016/j.apsusc.2019.07.035
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