Erlangen 2026 – scientific programme

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P: Fachverband Plasmaphysik

P 12: Atmospheric Pressure Plasmas I

P 12.2: Talk

Wednesday, March 18, 2026, 14:15–14:30, KH 01.020

The Influence of Floating Materials on Streamer Propagation in sDBD Systems — •Dominik Filla, Nils Schoeneweihs, Gerrit Hübner, Ihor Korolov, Thomas Mussenbrock, and Mate Vass — Department of Electrical Engineering and Information Science, Ruhr University Bochum, D-44780, Bochum, Germany

The efficient conversion of greenhouse gases and volatile organic compounds (VOCs) remains a significant challenge for environmental sustainability and advanced chemical processes. Surface dielectric barrier discharges (sDBDs) driven by nanosecond pulses offer a promising approach to address these challenges by exploiting the complex interplay between streamer discharges and nearby floating metal materials. This study investigates how floating surfaces affect the behavior of positive and negative streamers in He/N2 sDBD systems. Using 2D plasma-fluid simulations, we analyze the impact of floating metal surfaces on streamer propagation, velocity, and the resulting electric field configuration. Numerical results reveal that streamers deposit charge on the floating material, thereby modifying the local electric field and subsequently affecting the propagation behavior of both positive and negative streamers. The simulations show good agreement with experimental observations via phase resolved optical emission spectroscopy. Supported by the DFG via SFB 1316.

Keywords: 2D plasma simulation; Low temperature plasmas; Atmospheric pressure plasmas