Formation of reactive oxygen and nitrogen species by repetitive negatively pulsed helium atmospheric pressure plasma jets propagating into humid air

2015 ◽  
Vol 24 (3) ◽  
pp. 035026 ◽  
Author(s):  
Seth A Norberg ◽  
Eric Johnsen ◽  
Mark J Kushner
Keyword(s):  
Atmospheric Pressure ◽  
Reactive Oxygen ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jets ◽  
Nitrogen Species ◽  
Humid Air ◽  
Pressure Plasma

Production of Reactive Oxygen and Nitrogen Species in a Cell Culture Medium Exposed to an Atmospheric Pressure Plasma Jet

MRS Advances ◽  
2017 ◽  
Vol 2 (18) ◽  
pp. 987-993 ◽  
Author(s):  
Hirofumi Kurita ◽  
Junichiro Miyamoto ◽  
Saki Miyachika ◽  
Yoshito Uchihashi ◽  
Hachiro Yasuda ◽  
...  
Keyword(s):  
Cell Culture ◽  
Atmospheric Pressure ◽  
Culture Medium ◽  
Liquid Surface ◽  
Reactive Oxygen ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Cell Culture Medium ◽  
Nitrogen Species ◽  
Pressure Plasma

ABSTRACTCold atmospheric pressure plasma has been intensively studied due to growing interest in biomedical applications. For example, it has been revealed that the plasma-irradiated cell culture medium (PAM: Plasma Activated Medium) shows antitumor effect as well as the direct plasma treatment. Long-lived reactive oxygen and nitrogen species (RONS), such as hydrogen peroxide (H2O2), nitrite (NO2-), and nitrate (NO3-), are considered as a main product in PAM. Therefore, investigation of the production characteristics of RONS in PAM with different experimental parameters is important. Here, we focused on humidification of feed gas (argon or helium) and effect of gap between the nozzle of the plasma jet and liquid surface. As a result, H2O2 concentration was increased by humidification of both feed gases. However, the concentration of NO2- and NO3- was decreased by the humidification of helium. In addition, the remarkable effect of the humidification on H2O2 production was observed when the plasma jet was in contact with the liquid surface.

scholarly journals Cold atmospheric pressure plasma jets as sources of singlet delta oxygen for biomedical applications

2011 ◽  
Vol 109 (12) ◽  
pp. 123302 ◽  
Author(s):  
J. S. Sousa ◽  
K. Niemi ◽  
L. J. Cox ◽  
Q. Th. Algwari ◽  
T. Gans ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Biomedical Applications ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jets ◽  
Pressure Plasma ◽  
Cold Atmospheric Pressure Plasma

Enhanced Long-Term Color Stability of Teeth Treated with Hydrogen Peroxide and Non-Thermal Atmospheric Pressure Plasma Jets

2014 ◽  
Vol 11 (11) ◽  
pp. 1010-1017 ◽  
Author(s):  
Seoul Hee Nam ◽  
Hyun Wook Lee ◽  
Jin Woo Hong ◽  
Hae June Lee ◽  
Gyoo Cheon Kim
Keyword(s):  
Hydrogen Peroxide ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Color Stability ◽  
Plasma Jets ◽  
Pressure Plasma

Power Systems of Plasma Reactors for Non-Thermal Plasma Generation

2013 ◽  
Vol 16 (1) ◽  
Author(s):  
Henryka Danuta Stryczewska ◽  
Tomasz Jakubowski ◽  
Stanisław Kalisiak ◽  
Tomasz Giżewski ◽  
Joanna Pawłat
Keyword(s):  
Atmospheric Pressure ◽  
Arc Discharge ◽  
Plasma Reactor ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jets ◽  
Plasma Reactors ◽  
Dielectric Barrier ◽  
Gliding Arc ◽  
Pressure Plasma ◽  
Supply Systems

AbstractRecently, many different plasma sources are being investigated for exhaust gases treatment, odor abatement, VOC removal, soil conditioning, surface decontamination or tissue disinfection and sterilization. Among many different plasma reactors investigated in laboratories, gliding arc discharges (GAD), dielectric barrier discharges (DBD), pulsed discharges (PD), atmospheric pressure glow discharges (APGD) and atmospheric pressure plasma jets (APPJ) seem to be the most promising for high pressure low temperature applications. They can be designed as multi-electrodes’ high power system that can be used in environment protection processes, like decontamination of large surfaces and treatment of large volume of polluted gases, as well as small size and low power devices for biomedical applications, like plasma healing, disinfection and sterilization. Paper presents review of power supply systems for cold plasma reactors. Dielectric Barrier Discharge (DBD), Gliding Arc Discharge (GAD) and atmospheric pressure plasma jet (APPJ) reactors with their supply systems have been discussed from the point view of their characteristics, possibility to control power to the discharge and efficiency. Taking into account the plasma reactor characteristics and nature (nonlinear resistive and/or capacitive) different solutions of power suppliers have been presented: transformer type, AC/DC/AC inverter, RF-frequency system and frequency resonant inverter.

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