Investigation of Gold Electrodes Surface Condition of Plasma Reactor

Abstract

During the long-term operation of the plasma reactor, decreases in the plasma concentration were noticed despite the constant maintenance of all parameters. One of the factors is the decrease of the nitrogen content on the surface of the electrode, in order to eliminate it, the supply voltage has been increased to 11 kV. The next decisive factor in the decrease of plasma concentration is the oxidation of the electrode surface, therefore two electrodes were used: first one with solid gold and the other one copper covered with galvanized gold with a thickness of 10 μm. During the experiment, a large decrease in plasma concentration was observed when the electrode coated by gold was used. High-energy electrons have knocked out the gold atoms from the electrode, as a result of which the gold evaporated and the raids layers formed. After a month of working of the electrodes, metallographic researches were carried out, the results of which are described in this publication.

Comparative Analysis on Dielectric Gold and Aluminium Triangular Junctions: Impact of Ionic Strength and Background Electrolyte by pH Variations

“…Concerning the novelty of this manuscript gold can be used because research proves that only micro-areas will be covered with oxygen during the oxidation process and no continuous coating around the gold electrode. Moreover, only 10% of oxygen 29 will be found in the analyzed micro-areas. Hence, gold electrode can be a promising transducer in biosensing platform.…”