Abstract
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°.
| Original language | English |
|---|---|
| Article number | 126601 |
| Journal | Materials Letters |
| Volume | 256 |
| Early online date | 30 Aug 2019 |
| DOIs | |
| Publication status | Published - 1 Dec 2019 |
| 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).Keywords
- Fiber laser
- Superhydrophobic
- Aluminium
- Nanostructures
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering