Electrical characterization and plasma diagnostics of the dielectric-barrier discharge (DBD) plasma jet for bacterial deactivation

Abstract

In this paper, the insulation barrier of the dielectric-barrier discharge (DBD) plasma jet is discharged at atmospheric pressure. Where the degradation efficiency of the DBD plasma jet is evaluated on bacteria of Staphylococcus aureus with different exposure times. The flow rate of the gas used is also studied. In addition, the optical emission spectrum of OES is examined to detect plasma parameters such as electron temperature and electron density. OES is also used to detect active species within a plasma column such as OI, $\text{N}_2$ and OH and other. The percentage of growth inhibition is increased directly with increased time of exposure from the DBD plasma jet.