Anticancer Effects of Plasma-Activated Medium Produced by a Microwave-Excited Atmospheric Pressure Argon Plasma Jet

Figure 1

ME-APPJ device and plasma properties. (a) Photograph of microwave-excited atmospheric pressure argon plasma jet for plasma treatment on liquid. Diagnostics include optical emission spectroscopy. (b) Gas temperature vs. input power for different gas flow rates. (c) Optical emission spectrum from 200 to 1,000 nm observed in the ME-APPJ (input power of 7 W, gas flow rate of 1.3 SLM). Optical emission intensities of RONS-related lines NO (283 nm), OH (308 nm), O (777 nm), and N₂ (337 nm) were compared at various input powers (d) and gas flow rates (e). (f) Boltzmann plots obtained from Ar lines for ME-APPJ (input power of 7 W, gas flow rate of 1.3 SLM). And (g) the changes of as a function of input power at different Ar gas flow rates. (h) Measured H_𝛽 line profile and the Voigt function fed to the normalized line profile points for ME-APPJ (input power of 7 W, gas flow rate of 1.3 SLM).

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