scholarly journals The Effects of Atmospheric Pressure Plasma Irradiation on Cultured Cells

2021 ◽  
Vol 29 (1) ◽  
pp. 118-123
Author(s):  
Genu TAKAHASHI ◽  
Nanako OKUNO ◽  
Takamichi HIRATA ◽  
Akira MORI ◽  
Masaya WATADA
Keyword(s):  
Atmospheric Pressure ◽  
Cultured Cells ◽  
Atmospheric Pressure Plasma ◽  
Plasma Irradiation ◽  
Pressure Plasma

Apoptotic effects on cultured cells of atmospheric-pressure plasma produced using various gases

2015 ◽  
Vol 55 (1S) ◽  
pp. 01AF03 ◽  
Author(s):  
Kanako Tominami ◽  
Hiroyasu Kanetaka ◽  
Tada-aki Kudo ◽  
Shota Sasaki ◽  
Toshiro Kaneko
Keyword(s):  
Atmospheric Pressure ◽  
Cultured Cells ◽  
Atmospheric Pressure Plasma ◽  
Pressure Plasma ◽  
Apoptotic Effects

Effect of atmospheric-pressure plasma irradiation on the surface tension of water

2022 ◽  
Author(s):  
Naoki Shirai ◽  
Takuma Kaneko ◽  
Yuto Takamura ◽  
Koichi Sasaki
Keyword(s):  
Surface Tension ◽  
Gas Phase ◽  
Atmospheric Pressure ◽  
Water Surface ◽  
Atmospheric Pressure Plasma ◽  
Marangoni Effect ◽  
Oh Radicals ◽  
Plasma Irradiation ◽  
Pressure Plasma ◽  
Trapping Agent

Abstract We have shown that measuring the surface tension is a useful scheme to examine the plasma-liquid interface in real-time. The surface tension was measured using a method based on the dispersion relation of an acoustic capillary wave excited on the water surface. The surface tension gradually increased with time, when the water surface was irradiated with the outside region of the spatial afterglow of an atmospheric-pressure plasma. The Marangoni effect associated with the localized increase in the surface tension was observed during the plasma irradiation. The surface tension decreased after the termination of the discharge. A correlation was found between the transient decrease in the surface tension and the variation of the OH radical density in the gas phase. No increase in the surface tension was observed in the solution containing a trapping agent for liquid-phase OH radicals. These experimental results suggest that OH radicals act to increase the surface tension. However, the behavior of the surface tension cannot be explained perfectly by considering only the action of OH radicals.

Fat Liquefaction of Adipose Tissue Using Atmospheric-Pressure Plasma Irradiation

2011 ◽  
Vol 50 (8) ◽  
pp. 080217
Author(s):  
Takamichi Hirata ◽  
Chihiro Tsutsui ◽  
Takumi Kishimoto ◽  
Akira Mori ◽  
Masahiro Akiya ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Irradiation ◽  
Pressure Plasma

Fat Liquefaction of Adipose Tissue Using Atmospheric-Pressure Plasma Irradiation

2011 ◽  
Vol 50 (8R) ◽  
pp. 080217 ◽  
Author(s):  
Takamichi Hirata ◽  
Chihiro Tsutsui ◽  
Takumi Kishimoto ◽  
Akira Mori ◽  
Masahiro Akiya ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Atmospheric Pressure ◽  
Atmospheric Pressure Plasma ◽  
Plasma Irradiation ◽  
Pressure Plasma

Micro-Inactivation of Coliforms by Low-Temperature and Atmospheric-Pressure Plasma Irradiation

2015 ◽  
Vol 749 ◽  
pp. 74-78
Author(s):  
Hideyuki Takahashi ◽  
Satoshi Kurumi ◽  
Kaoru Suzuki ◽  
Katsushi Nishimura ◽  
Hideharu Hirose ◽  
...  
Keyword(s):  
Low Temperature ◽  
Emission Spectrum ◽  
Atmospheric Pressure ◽  
Oral Surgery ◽  
Irradiation Time ◽  
Atmospheric Pressure Plasma ◽  
Positive System ◽  
Plasma Irradiation ◽  
Pressure Plasma ◽  
Peak Intensity

In this study, we report on the inactivation technique to apply the oral surgery by micro low-temperature and atmospheric-pressure plasma irradiation utilizing a capillary nozzle. Emission spectrum of the micro-plasma showed OH and O radical, which were affected inactivation of coliform. Vibration temperature of the micro-plasma with 7998 K was calculated from peak-intensity at emission due to N22nd positive system. Inactivation region was larger than plasma irradiation spot, and it was increasing with plasma irradiation time.

scholarly journals Effective Dissolution of Biomass in Ionic Liquids by Irradiation of Non-Thermal Atmospheric Pressure Plasma

2017 ◽  
Vol 70 (6) ◽  
pp. 731
Author(s):  
Kosuke Kuroda ◽  
Kai Shimomura ◽  
Tatsuo Ishijima ◽  
Kenji Takada ◽  
Kazuaki Ninomiya ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Atmospheric Pressure ◽  
Chemical Species ◽  
Atmospheric Pressure Plasma ◽  
Japanese Cedar ◽  
Selective Extraction ◽  
High Solubility ◽  
Plasma Irradiation ◽  
Pressure Plasma ◽  
Active Chemical

Biomass was dissolved in ionic liquids under non-thermal atmospheric pressure plasma irradiation. On plasma irradiation, the amount of dissolved biomass in the ionic liquids increased from 15 to 29 mg for bagasse and from 26 to 36 mg for Japanese cedar. The high solubility was attributed to the deconstruction of the lignin network by active chemical species generated by the plasma. Selective extraction of cellulose from biomass was observed under plasma irradiation.

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