Mutual interaction among multiple surface barrier discharges

Abstract

This study investigates how the electrode width of a surface barrier discharge (SBD) array affects the deposited power, the induced flow and the spatial distribution of reactive species delivered to a downstream sample. It is shown that decreasing electrode width increases the power density at a fixed operating voltage, causing an intensification of the oscillatory flow by up to 200%, resulting from the overlap of localized flows at every discharge gap. This intensification introduces ripples in the flux of species to a downstream surface when the distance between the SBD array and the treated surface is reduced. A transition between a convection-driven delivery and diffusion-driven delivery was identified and quantified for different electrode widths and distances between SBDs and the treated surface. The work shows that the ripples in the delivered flux were associated with convection-driven delivery.

Sustainable Plasma‐Catalytic Nitrogen Fixation with Pyramid Shaped μ‐Electrode DBD and Titanium Dioxide

“…Previous studies have explored different electrode shapes such as pyramid-shaped spikes, spiral electrodes, double hexagons, and conical electrodes. [27][28][29][30][31][32] However, these studies primarily focused on the shape of the electrodes rather than their sharpness. It is assumed that such a micro-level sharpness on the end of the electrode acts as a charge emitter, which can promote a higher rate of secondary electron emission and field emission due to the intensified local electric field.…”

“…The shape of the electrode used in the plasma source plays a crucial role in determining how the plasma behaves and its characteristics. Previous studies have explored different electrode shapes such as pyramid‐shaped spikes, spiral electrodes, double hexagons, and conical electrodes [27–32] . However, these studies primarily focused on the shape of the electrodes rather than their sharpness.…”