The influences of the electrode dimension and the dielectric material on the breakdown characteristics of coplanar dielectric barrier discharge in ambient air

Abstract

The influences of the angle of the V‐shaped electrode, the interelectrode distance, the thickness and the types of dielectric plate on the breakdown characteristics of air coplanar dielectric barrier discharge are investigated. When the angle of the electrode increases, the ignition voltage surprisingly decreases, while both the discharge current, and plasma area remain constant. With smaller interelectrode distance or thinner dielectric plate, lower ignition voltage is required. However, if either one of the them exceeds the threshold value, the discharge mode transits from steady to stochastic. In addition, the discharge appearance in the case of alumina is visually more diffuse with respect to the cases of mica and quartz, which may be caused by the surface charges with high density.

Discharge characteristics of atmospheric pressure pulsed microwave He/N2 plasma jet

“…Compared with the filamentous Ar plasma, He plasma has a lower breakdown voltage, a higher portion of reactive species, more stable discharge, and safer gas temperature under low-frequency excitation. [13][14][15][16][17][18][19][20][21][22] Thus, He APPJ is more favourable in engineering applications.…”

A 3D-printed fence-surface plasma source for skin treatment and its potential for personalized medical application

“…APPJ and FEDBD are volume DBD (VDBD) for which the discharge occurs between the high voltage and ground electrodes [21][22][23]. In contrast, for SDBD, the high voltage and ground electrodes are embedded in the dielectric and the discharge only happens on the surface of the dielectric [24][25][26][27]. Coplanar DBD (CDBD) which utilizes the thin film as the dielectric could adapt to different surface shapes and treat a relatively large area.…”

A nonequal gap distance dielectric barrier discharge: Between spiral‐shaped and cylinder‐shaped electrodes

“…Atmospheric pressure nonequilibrium plasma (APNP) has been applied to a variety of industrial applications such as waste gas treatment, ozone generation, the generation of ultraviolet or vacuum ultraviolet radiation, pollutant degradation, material processing, biological sterilization, and surface treatment (modification, deposition, etching), and so forth. [ 1–17 ] This is due to its high concentration of reactive species while keeping gas temperature close to or even at room temperature.…”