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P: Fachverband Plasmaphysik

P 12: Poster II

P 12.21: Poster

Mittwoch, 22. März 2023, 17:30–19:00, HSZ EG

Characterization of low-pressure plasmas in highly porous and lightweight aeromaterials — •Karin Hansen¹, Lena M. Saure², Rainer Adelung², and Franko Greiner¹ — ¹Institute of Experimental and Applied Physics, Kiel University, Kiel, Germany — ²Institute for Materials Science, Kiel University, Kiel, Germany

Plasma catalysis is a research field of growing interest due to the ongoing challenges in environmental protection. For the understanding of plasma catalysis, the interaction between the plasma and the catalyst surface plays an important role. Highly porous materials are used to provide a large surface area for a catalytic reaction processes. As the interplay of a plasma with porous material is not well studied, but crucial for further research, we investigate aeromaterials, micron-sized frameworks with nano-sized walls, in low-pressure plasmas. Highly porous (> 99.9 %) and lightweight (< 2 mg cm⁻³) aeromaterials are developed in the group of R. Adelung at Kiel University and can be generated from different materials and with different porosity and conductivity.

In this work we explore the interaction of aeromaterials with low-pressure argon plasmas. To this end, a radio-frequency argon plasma is ignited in cylindrical cavities in aeromaterial cylinders. The impact of the aeromaterial wall interfaces on the plasma is studied with optical emission spectroscopy (OES) and electrostatic probes.