Nanostructure fabrication on the top of laser-made micropillars for enhancement of water repellence of aluminium alloy

0510833 - FZÚ 2020 RIV NL eng J - Článek v odborném periodiku
Hauschwitz, Petr - Jagdheesh, R. - Rostohar, Danijela - Brajer, Jan - Kopeček, Jaromír - Jiříček, Petr - Houdková, Jana - Mocek, Tomáš
Nanostructure fabrication on the top of laser-made micropillars for enhancement of water repellence of aluminium alloy.
Materials Letters. Roč. 256, Dec (2019), s. 1-4, č. článku 126601. ISSN 0167-577X. E-ISSN 1873-4979
Grant CEP: GA MŠMT EF15_006/0000674; GA MŠMT(CZ) LM2015088
GRANT EU: European Commission(XE) 739573 - HiLASE CoE
Grant ostatní: OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institucionální podpora: RVO:68378271
Klíčová slova: fiber laser * superhydrophobic * aluminium * nanostructures
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 3.204, rok: 2019
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.matlet.2019.126601

Fabrication of superhydrophobic surfaces is a popular topic in research and industry due to many potential applications including self-cleaning, anti-icing or drag reduction. Laser micro and nanostructuring is an efficient method to replicate lotus leaves double-scale structures to achieve superhydrophobicity without chemical treatment. Immediately after laser processing, samples are hydrophilic and become hydrophobic in a few days, exposed to atmospheric conditions. This time was significantly reduced by vacuum processing to only 4 h. Two-step fabrication method of superhydrophobic surfaces have been developed using nanosecond laser system. In the first step, large scale micropillars are fabricated and covered by nano-scale protrusions in the following step using defocused laser beam. The nanostructure formation increased the apparent contact angle from 149° to 175°.
Trvalý link: http://hdl.handle.net/11104/0301214