Hydrophilic to ultrahydrophobic transition of Al 7075 by affordable ns fiber laser and vacuum processing

P. Hauschwitz; R. Jagdheesh; D. Rostohar; J. Brajer; J. Kopeček; P. Jiřícek; J. Houdková; T. Mocek

doi:10.1016/j.apsusc.2019.144523

Hydrophilic to ultrahydrophobic transition of Al 7075 by affordable ns fiber laser and vacuum processing

P. Hauschwitz, R. Jagdheesh, D. Rostohar, J. Brajer, J. Kopeček, P. Jiřícek, J. Houdková, T. Mocek

Research output: Contribution to journal › Article › peer-review

51 Citations (Scopus)

Abstract

A lot of research efforts have been invested in the fabrication of superhydrophobic surfaces in recent years due to many protentional applications in science and industry including anti-icing, self-cleaning and anti-corrosive surfaces. Laser as a non-polluting, precise and flexible tool can be applied to replicate surface microstructures of extremely water repellent lotus leave surface. In this study, a common nanosecond laser source is used to fabricate a super/ultrahydrophobic surfaces with different microstructure designs, contact angles above 170° and sliding angles below 5°. The freshly processed surface is hydrophilic and becomes hydrophobic and superhydrophobic in a certain time period, which could be dramatically reduced by storing samples in high vacuum. The transformation in wetting properties are analysed with respect to surface geometry and surface chemistry.

Original language	English
Article number	144523
Journal	Applied Surface Science
Volume	505
Early online date	6 Nov 2019
DOIs	https://doi.org/10.1016/j.apsusc.2019.144523
Publication status	Published - 1 Mar 2020
Externally published	Yes

Funder

This work was supported by European Structural and Investing Funds, Operational Programme Research, Development and Education (Grant agreement NO CZ.02.1.01/0.0/0.0/15_006/ 0000674) and from the European Union’s Horizon 2020 research and innovation programme (Grant agreement NO 739573) and by the Ministry of Education, Youth and Sports of the Czech Republic (grant LM2015088). Also, supported in part by the MEYS SAFMAT CZ.02.1.01/0.0/0.0/16_013/0001406, LO1409 and LM2015088 projects (SEM maintenance)

Keywords

Surface functionalization
Ultrahydrophobicity
Fiber laser
Vacuum processing

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.apsusc.2019.144523

Cite this

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title = "Hydrophilic to ultrahydrophobic transition of Al 7075 by affordable ns fiber laser and vacuum processing",

abstract = "A lot of research efforts have been invested in the fabrication of superhydrophobic surfaces in recent years due to many protentional applications in science and industry including anti-icing, self-cleaning and anti-corrosive surfaces. Laser as a non-polluting, precise and flexible tool can be applied to replicate surface microstructures of extremely water repellent lotus leave surface. In this study, a common nanosecond laser source is used to fabricate a super/ultrahydrophobic surfaces with different microstructure designs, contact angles above 170° and sliding angles below 5°. The freshly processed surface is hydrophilic and becomes hydrophobic and superhydrophobic in a certain time period, which could be dramatically reduced by storing samples in high vacuum. The transformation in wetting properties are analysed with respect to surface geometry and surface chemistry.",

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AU - Hauschwitz, P.

AU - Jagdheesh, R.

AU - Rostohar, D.

AU - Brajer, J.

AU - Kopeček, J.

AU - Jiřícek, P.

AU - Houdková, J.

AU - Mocek, T.

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AB - A lot of research efforts have been invested in the fabrication of superhydrophobic surfaces in recent years due to many protentional applications in science and industry including anti-icing, self-cleaning and anti-corrosive surfaces. Laser as a non-polluting, precise and flexible tool can be applied to replicate surface microstructures of extremely water repellent lotus leave surface. In this study, a common nanosecond laser source is used to fabricate a super/ultrahydrophobic surfaces with different microstructure designs, contact angles above 170° and sliding angles below 5°. The freshly processed surface is hydrophilic and becomes hydrophobic and superhydrophobic in a certain time period, which could be dramatically reduced by storing samples in high vacuum. The transformation in wetting properties are analysed with respect to surface geometry and surface chemistry.

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Hydrophilic to ultrahydrophobic transition of Al 7075 by affordable ns fiber laser and vacuum processing

Abstract

Funder

Keywords

ASJC Scopus subject areas

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