Self-Tuning High-Voltage High-Frequency Switching Power Amplifier for Atmospheric-Based Plasma Sterilization

Effects of assisted magnetic field to an atmospheric-pressure plasma jet on radical generation at the plasma-surface interface and bactericidal function

“…Thus, how to increase the ROS efficiently becomes an important subject in the related research field. There have been many ways to increase the amount of ROS generation, such as mixing gas [12,13], increasing input power/frequency/voltage and changing waveform [14][15][16][17], adding water vapor/hydrogen peroxide [18,19] and changing electrode configurations [20][21][22], amongst others. In the current study, we report that the efficacy of the plasma treatment can be enhanced on ROS generation at the plasma/substrate interface by the applied axial magnetic field of ~0.587 T.…”

Roles of membrane protein damage and intracellular protein damage in death of bacteria induced by atmospheric-pressure air discharge plasmas

“… 9 As for the sterilization mechanism, O. Lunov et al found that plasma induced bacteria death might arise from membrane damage 6 and R. A. Chinga et al surmised that plasma might contribute to bacteria death by causing DNA and biomolecule damage. 13 Here, our results reveal damage of the membrane and intracellular proteins in E. coli . Based on the comparison between the death time of E. coli after the plasma treatment and storage time, the possible sterilization mechanism can be postulated.…”

“…Plasma medicine is an emerging eld involving biological and medical applications of non-thermal plasmas, 1,2 such as deactivation of microorganisms, [3][4][5][6][7][8][9][10][11][12][13] blood coagulation, 14 wound healing, [15][16][17] cancer treatment, 18,19 and sterilization of medical devices. 20 Recent studies have revealed excellent antimicrobial and anticancer effectiveness by deactivation of various types of bacteria and apoptosis of a wide range of cancer cells.…”