Patent ID: 8557187

Claim:
A device for dry cleaning, activation, coating, modification, and/or biological decontamination of a surface using an atmospheric pressure plasma produced by a surface barrier discharge in a defined, flowing gas atmosphere, said device comprising: a high-voltage electrode covered by a dielectric or a ferroelectric, an electrically conductive grounded contact electrode, a high-voltage supply, a gas feed, and a gas nozzle with a gas exit opening, wherein a) the gas nozzle is integrated into the contact electrode, or b) the gas nozzle itself functions as a grounded contact electrode, and the gas exit opening is designed in such a manner that an exiting gas stream is directed at the contact location of the grounded contact electrode, and wherein c) said dielectric or ferroelectric cover of said dielectric-covered or ferroelectric-covered high-voltage electrode is in direct contact with said grounded, electrically conductive contact electrode.