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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 ...
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 surface temperature plays an important role in limiting the usefulness of a dielectric barrier discharge plasma actuator. The thrust produced by an actuator in quiescent air increases with a power law of the applied voltage.
Scheme of dielectric barrier discharge [1] 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.
Dielectric barrier discharge (DBD) is one of the main ways to produce low-temperature plasmas in a non-equilibrium condition at atmospheric pressure. [ 4 ] [ 5 ] Additionally, there have been reports stating that the Atmospheric-pressure glow discharge, when powered by a low-frequency (10-100 kHz) source, needs a dielectric barrier on one side ...
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.
Fig. 1. The surface of a MEMS device is cleaned with bright, blue oxygen plasma in a plasma etcher to rid it of carbon contaminants. (100mTorr, 50W RF) Plasma cleaning is the removal of impurities and contaminants from surfaces through the use of an energetic plasma or dielectric barrier discharge (DBD) plasma created from gaseous species.
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]