Characteristics of Nonequilibrium Plasma Flow and Its Sterilization Efficacy in a Tube at Atmospheric Pressure

Generation and Transportation Mechanisms of Chemically Active Species by Dielectric Barrier Discharge in a Tube for Catheter Sterilization

“…The magnitude of the vortex for a rectangular wave was greater than that for a sine wave since the power consumption was almost twice as large. These results correspond to the sterilization results 17, 18…”

“…The vibrational and rotational temperatures were 0.29 and 0.03 eV, respectively, that is, this non‐equilibrium might have been caused by collision of N 2 and high energy electrons generated in a strong electric field. The rotational temperature of 0.03 eV approximately corresponded to the gas temperature of 350 to 380 K measured by the thermolabel at 11 kV pp 18…”

“…We have previously reported the development of a DBD system for sterilization in a narrow tube for application to catheter sterilization 17, 18. We clarified the sterilization efficacy in a tube by DBD at atmospheric pressure as follows.…”

Sterilization of narrow tube inner surface using discharge plasma, ozone, and UV light irradiation

“…Recently, techniques for plasma generation inside a narrow tube using an atmospheric dielectric barrier discharge (DBD) or a microwave electron cyclotron resonance (ECR) plasma have been proposed [10,11]. In the DBD method, a wire-type electrode was inserted into a narrow tube and the tube was fixed to a ground plate to generate plasma uniformly.…”

Coaxial rf atmospheric pressure dielectric barrier air–helium plasma characteristics

“…There is a growing interest in atmospheric pressure glow discharges (APGD) because they have many similarities [2] to classical capacitively coupled low pressure plasmas but do not require expensive and complicated vacuum systems. Atmospheric pressure rf discharges have already found many applications in thin film deposition [3], etching [4], sterilization [5] and polymerization [6] and nanocomposite [7] deposition but atmospheric pressure discharge physics is not yet fully understood. Atmospheric pressure rf plasma systems consist of different varieties of electrode forms: naked electrodes [8] and electrodes covered by dielectrics [9,10] and can have different geometries.…”