Development and applications of a novel low-temperature plasma source under atmospheric pressure

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A novel atmospheric pressure plasma source has been developed. The source has an array of many copper dots with floating potential on the dielectric barrier surface. The floating electrodes, that is, the copper dots decreased the breakdown voltage by about 20% as compared with barrier discharge. It was clarified that a discharge occur around edges of copper dot and it move to a region separated from floating electrodes and at a short distance from them as time pass. It was found from a preliminary experiment of surface treatment that this plasma source is applicable to applications in the field of low-temperature plasma.