123957 20240319081028.0 doi 10.3390/polym14245554 sideral 132444 ART-2022-132444 eng Rivera-Sahún, Joaquín Use of green fs lasers to generate a superhydrophobic behavior in the surface of wind turbine blades 2022 Access copy available to the general public Unrestricted Ice generation on the surface of wind generator blades can affect the performance of the generator in several aspects. It can deteriorate sensor performance, reduce efficiency, and cause mechanical failures. One of the alternatives to minimize these effects is to include passive solutions based on the modification of the blade surfaces, and in particular to generate superhydrophobic behavior. Ultra-short laser systems enable improved micromachining of polymer surfaces by reducing the heat affected zone (HAZ) and improving the quality of the final surface topography. In this study, a green fs laser is used to micromachine different patterns on the surface of materials with the same structure that can be found in turbine blades. Convenient optimization of surface topography via fs laser micromachining enables the transformation of an initially hydrophilic surface into a superhydrophobic one. Thus, an initial surface finish with a contact angle ca. 69° is transformed via laser treatment into one with contact angle values above 170°. In addition, it is observed that the performance of the surface is maintained or even improved with time. These results open the possibility of using lasers to control turbine blade surface microstructure while avoiding the use of additional chemical coatings. This can be used as a complementary passive treatment to avoid ice formation in these large structures. info:eu-repo/grantAgreement/ES/DGA/T54-20R info:eu-repo/grantAgreement/EC/H2020/899352/EU/Sustainable Smart De-Icing by Surface Engineering of Acoustic Waves/SOUNDofICE This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 899352-SOUNDofICE info:eu-repo/grantAgreement/ES/MICINN/AEI/PID2020-113034RB-I00 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 5.0 2022 POLYMER SCIENCE 16 / 85 = 0.188 2022 Q1 T1 0.72 2022 Polymers and Plastics 2022 Q1 Chemistry (miscellaneous) 2022 Q1 6.6 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Porta-Velilla, Luis Universidad de Zaragoza de la Fuente, Germán F. (orcid)0000-0002-0500-1745 Angurel, Luis A. Universidad de Zaragoza (orcid)0000-0001-5685-2366 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 14, 24 (2022), 5554 [17 pp.] Polymers (Basel) Polymers 2073-4360 11416159 http://zaguan.unizar.es/record/123957/files/texto_completo.pdf Versión publicada 2807608 http://zaguan.unizar.es/record/123957/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:123957 articulos driver 2024-03-18-16:54:10 ARTICLE