Characterization of plasma based on the electrode size of atmospheric pressure plasma jet (APPJ)

Atmospheric Pressure Plasma Jet recognize as non-thermal plasma or cold plasma where known as APPJ which is generated under pressure of the atmospheric environment, currently APPJ using in many kind of application especially in biomedical application to reduce microbial activity. In APPJ, there are various type of configuration can be set to produce plasma discharge. This project began by changing the configuration of electrodes thickness, electrodes distance, and quartz tube's inner and outer diameter to generate ideal plasma discharge. The ideal plasma discharge can be choose from Optical Emission Spectroscopy (OES) analysis by using SpectraWiz software and bacteria inactivation method. This OES analysis used to analyze the charged species and chemical reactive species that present in the plasma plume. The length and reactive species of plasma discharge is all depend on the APPJ configuration used. From the result of OES analysis, the best parameters can choose to perform the bacteria inactivation method. It was found that the bacterial inactivation depend on the oxygen radical was introduced into the plasma jet system. The ideal configuration that was choosen from this research can be applicable in future plasma process to get an effective result.