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Open AccessArticle

Direct Femtosecond Laser Fabrication of Superhydrophobic Aluminum Alloy Surfaces with Anti-icing Properties

1
Dipartimento Interateneo di Fisica, Università degli Studi di Bari, Via G. Amendola 173, 70126 Bari, Italy
2
Institute for Photonics and Nanotechnologies, CNR IFN, Via Amendola 173, 70126 Bari, Italy
3
Istituto Nazionale di Fisica Nucleare-Sezione di Bari, via Orabona 4, 70125 Bari, Italy
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(6), 587; https://doi.org/10.3390/coatings10060587
Received: 30 May 2020 / Revised: 19 June 2020 / Accepted: 22 June 2020 / Published: 24 June 2020
(This article belongs to the Special Issue Anti-Adhesive Surfaces)
Ice formation is a serious issue in many fields, from energy to aerospace, compromising the devices’ efficiency and security. Superhydrophobicity has been demonstrated to be correlated to the anti-icing properties of surfaces. However, fabricating surfaces with robust water repellence properties also at subzero temperature is still a great challenge. In this work, femtosecond laser (fs-laser) texturing is exploited to produce superhydrophobic surfaces with anti-icing properties on Al2024, an aluminum alloy of great interest in cold environments, in particular for aircraft production. Our textured substrates present self-cleaning properties and robust water repellency at subzero temperatures. Moreover, outstanding anti-icing properties are achieved on the textured surfaces at −20 °C, with water droplets bouncing off the surface before freezing. View Full-Text
Keywords: fs-laser; surface texturing; Al2024; anti-icing; wettability; superhydrophobicity fs-laser; surface texturing; Al2024; anti-icing; wettability; superhydrophobicity
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MDPI and ACS Style

Volpe, A.; Gaudiuso, C.; Di Venere, L.; Licciulli, F.; Giordano, F.; Ancona, A. Direct Femtosecond Laser Fabrication of Superhydrophobic Aluminum Alloy Surfaces with Anti-icing Properties. Coatings 2020, 10, 587.

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