Superhydrophobic microspiked surface structures by ultrashort laser patterning

0553127 - FZÚ 2022 RIV GB eng J - Journal Article
Jagdheesh, Radhakrishnan - Kopeček, Jaromír - Brajer, Jan - Mocek, Tomáš
Superhydrophobic microspiked surface structures by ultrashort laser patterning.
Surface Engineering. Roč. 37, č. 10 (2021), s. 1266-1276. ISSN 0267-0844. E-ISSN 1743-2944
R&D Projects: GA MŠMT EF15_006/0000674; GA MŠMT LO1602
Grant - others:OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institutional support: RVO:68378271
Keywords : ultrafast laser * superhydrophobic * nanoscale * steel * picosecond and micro-cones
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.451, year: 2021
Method of publishing: Limited access
https://doi.org/10.1080/02670844.2021.1874651

In this study, self-organised microspiked surface structures were fabricated with a picosecond laser source on austenite stainless steel. The laser-processed surface structures were subjected to low-temperature annealing for chemical modification to reduce the surface free energy of the metal oxides formed due to laser processing. The low-temperature treatment accelerates the adsorption of organic contamination, leading to the formation of ultralow water adhesion surface in few hours compared to the prolonged ageing process. The effect of the number of pulses/spot (PPS) and fluence with respect to the geometrical shape and its impact on wetting behaviour has been systematically investigated. The density of the nanoscale protrusions and the overlay of spongy porous nanoscale structures were influenced by the number of PPS and applied energy density.
Permanent Link: http://hdl.handle.net/11104/0328142