Fabrication of ordered hierarchical structures on stainless steel by picosecond laser for modified wettability applications.

08:00 EDT 23rd July 2018 | BioPortfolio

Summary of "Fabrication of ordered hierarchical structures on stainless steel by picosecond laser for modified wettability applications."

Ordered hierarchical structures were fabricated on a stainless steel surface using a single picosecond laser for highly controllable dimensions. Picosecond laser induced periodic structures were firstly used to create large-scale nano-structures with a period of ~450 nm. Subsequently, laser direct writing, by simply changing process parameters was employed to create micro squared structures with 19 μm width, 19 μm interval and 3-7.5 μm depth on the previously created nano-structures. As a result, micro squared structures covered by uniform nano-structures, similar to examples present in nature, were successfully fabricated. Additionally, the wettability of the created hierarchical structures was analyzed. The results demonstrated that the combination of both micro- and nano-structures allowed to tune the wetting behavior, presenting a great potential for wettability applications.


Journal Details

This article was published in the following journal.

Name: Optics express
ISSN: 1094-4087
Pages: 18998-19008


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