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Original scientific paper

https://doi.org/10.5599/jese.1260

Fabrication of superhydrophobic surfaces by laser surface texturing and autoxidation

Vijay Kumar orcid id orcid.org/0000-0001-5415-2745 ; Industrial and Production Engineering Department, Dr B R Ambedkar National Institute of Technology Jalandhar, Punjab, India-144011
Rajeev Verma ; Industrial and Production Engineering Department, Dr B R Ambedkar National Institute of Technology Jalandhar, Punjab, India-144011
Harish Kumar Bairwa ; Industrial and Production Engineering Department, Dr B R Ambedkar National Institute of Technology Jalandhar, Punjab, India-144011


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Abstract

The creation of superhydrophobic surfaces (SHS) has received exceptional thought from the entire research community due to its notable application in varied fields such as anti-icing, self-cleaning, drag reduction, anti-bacterial, and oil-water separation. The super­hy­drophobic (SH) conditions for a surface can be attained through the consolidation of a low surface energy surface with appropriate micro/nano-surface roughness through texturing. Motivated by the SH nature of lotus leaf and petal effect, microstructures have been prepared in this work on a metal surface by a fiber laser marking machine at 35 W. The textured surfaces with a different pitch to diameter (p/d) ratio (2.0-0.70) have been turned into hydrophobic and finally SH, after storing in an ambient environment for a few days due to oxide layer deposition on the textured surface. In this study, the maximum contact angle achieved by textured geometry after 30 days of auto-oxidation was 158.6 o. Further, test results showed that the fabricated surfaces have a high potential to maintain their SH nature even after the harsh condition of applications.

Keywords

Anti-bacterial; oxide layer deposition; texturing; micro/nano-structure; self-cleaning

Hrčak ID:

283675

URI

https://hrcak.srce.hr/283675

Publication date:

18.9.2022.

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