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P: Fachverband Plasmaphysik

P 16: Invited talks IV

P 16.3: Invited Talk

Thursday, March 31, 2022, 12:00–12:30, P-H11

Functional coatings by atmospheric pressure plasma technology — •Kristina Lachmann, Thomas Neubert, Annika Mann, Marvin Omelan, and Michael Thomas — Fraunhofer Institute for Surface Engineering and Thin Films IST, Bienroder Weg 54E, 38108 Braunschweig, Germany

Atmospheric pressure plasma technology is well known for surface activation, functionalization and cleaning. It is also a versatile method to deposit thin films in the range of several 10 - 100 nm.

The main objective of such coatings is to achieve a higher functionality. Depending on the application, this ranges from a tailored surface tension to adhesion control or chemically reactive surfaces or antimicrobial properties. In the past, film deposition was focussed on the use of small molecules such as (silicon) organic compounds with high vapour pressures. More recently, more complex organic molecules such as fatty acids or polyphenols have also been investigated to achieve higher process sustainability and further functionalities such as soil repellency. To determine surface characteristics the analysis of these films is essential. Here, (derivatisation methods in combination with) FTIR-ATR spectroscopy, staining, investigations into soiling behaviour and the determination of surface tension by contact angle measurements are suitable methods.

In this work, we will demonstrate various applications for complete and area-selective atmospheric pressure plasma coatings not only on flat samples, but also on three-dimensional shapes.