Generation of multiple jet capillaries in advanced dielectric barrier discharge for large-scale plasma jets

Abstract Multiple Ar jet capillaries (4 jets) were successfully generated by an advanced dielectric barrier discharge reactor. The advanced reactor consisted of two ring-shaped electrodes (thickness of 0.5 mm) covering the 4-bore quartz tubing (bore diameters of 1 mm; outer diameter of 6 mm), and two electrodes had a gap of 6 mm and were isolated by immersing it to liquid dielectric to prevent arcing between two electrodes and high performance of plasma jet. The performance of multiple Ar jet capillaries by the advanced reactor demonstrated less consumption of Ar gas (1–3 L/min) for obtaining total π mm 2 cross-section area of plasma jets conjugated with jet temperatures not over 40°C; the temperature is suitable for implementing plasma to bio-applications. Furthermore, the plasma jet spread when it interreacted with a surface (dielectric materials, skin); consequently, the surface-effected plasma jet up to an area square of 8 mm 2 . Analysis of optical emissions spectra of the multiple Ar jet capillaries indicated that the jet sources consist of reactivated species and proposed that the plasma device has potential for applications in bio-applications and materials treatments.