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A dielectric barrier discharge is one method of plasma treatment of textiles at atmospheric pressure and room temperature. The treatment can be used to modify the surface properties of the textile to improve wettability, improve the absorption of dyes and adhesion, and for sterilization. DBD plasma provides a dry treatment that doesn't generate ...
An atmospheric-pressure plasma jet formed by helium flowing through a concentric dielectric barrier discharge (DBD) Atmospheric-pressure plasma (or AP plasma or normal pressure plasma) is a plasma in which the pressure approximately matches that of the surrounding atmosphere – the so-called normal pressure.
The "foot" of the discharge is the charge accumulation on the barrier surface. Dielectric barrier discharge occurs between two electrodes separated by a dielectric. Due to the presence of the dielectric barrier, such plasma sources operate only with sine-wave or pulsed high voltages.
The characteristics of a dielectric barrier discharge (DBD) plasma actuator when exposed to an unsteady flow generated by a shock tube is examined. A Study shows that not only is the shear layer outside of the shock tube affected by the plasma but the passage of the shock front and high-speed flow behind it also greatly influences the ...
The usage of dielectric barrier discharge enables a stable plasma at atmospheric pressure. To avoid sparks, a dielectric has to be fixed on one or both electrodes. The shape of the electrode is similar to the substrate geometry used to cover the entire surface. The principle of an AP-activation with one dielectric barrier is shown in figure ...
Sicrit ionizes molecules through a technique known as dielectric barrier discharge. This process involves creating an electrical discharge between two electrodes that are separated by a dielectric. The electrodes are a stainless-steel tube placed inside a copper tube, with a thin quartz tube separating them. The sample containing the molecules ...
Dielectric-barrier discharges are a type of plasma source that limits the current using a dielectric that covers one or both electrodes. The DBD was the plasma source used in the mid-1990s in the early groundbreaking work on the biomedical applications of cold plasma. [5]
The efficiency of the plasma generation reaches 90%, while the remaining 10% of the power is lost due to mechanical and dielectric heating of the piezoelectric transformer. Due to low electric currents, typical for the dielectric barrier and the corona discharges, the piezoelectric direct discharge produces a non-equilibrium plasma.