Generation Of Atmospheric-Pressure Glow Discharge And Its Application To Sterilization

Atmospheric pressure glow discharge plasma technology has a broad application prospects. This paper studies the atmospheric pressure glow discharge plasma formation characteristics and summarizes the formation methods of stable glow discharge at atmospheric pressure. We also studied the characteristics of plasma sterilization of glow discharge at atmospheric pressure, to provide a theoretical basis of the application on sterilization.We first designed a high-frequency high-voltage power source for dielectric barrier discharge (DBD) under atmospheric pressure. Then use this power to conduct parallel plate structure and coaxial electrode structure of the dielectric barrier glow discharge experiment.In the parallel plate electrode experiment, not only the impact from the power voltage and frequency to glow discharge is detailed analyzed , but we also briefly discussed how the working gas, the barrier characteristic , and the gap distance between the plate electrodes impacts the atmospheric pressure glow discharge.In the Coaxial electrode experiment, we discussed voltage, flow rate, frequency and other factors which have an effect impact on plasma puff. Summed up the conditions favorable for APGD.Finally we used the two electrode structure of the plasma to carry out the sterilization experiments. Verified the effectiveness of glow discharge plasma sterilization. Summarized some preliminary laws of glow discharge plasma on sterilization.