• Kopeček, J.
• Kunze, T.
• Jagdheesh, R.
• Alamri, S.
• Brajer, J.
• Rostohar, Danijela
• Mocek, T.
• Hauschwitz, P.

Abstract

<p>The fabrication of functional microstructures on surfaces by laser enables unique material properties and is presently a leading research topic. This work addresses the production of functional hierarchical microstructures on carbon fibre reinforced polymer composites in order to control the wettability properties of the material. Two-beam Direct Laser Interference Patterning using either ultraviolet (263 nm) or infrared (1053 nm) nanosecond laser source is employed to produce melt-free and well-defined hierarchical microstructures on carbon fibre reinforced plastics. The resulting water contact angles after thin film deposition of 1H,1H,2H,2H-Perflorodecyl-triethoxysilane were analysed with respect to structure depth and quality. The maximum static contact angle of 171° is demonstrated for dual hierarchical microstructures composed of 11 µm deep large-scale pillars, covered by 1.7 µm pillars, both fabricated in a single step.</p>

Topics

• Deposition
• impedance spectroscopy
• microstructure
• surface
• polymer
• Carbon
• thin film
• melt
• composite