Disinfection of Microbes by Magnetized DC Plasma

Ahmed Rida Galaly, Hamdi Hussien Zahran

Department of Botany, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.

DOI: 10.4236/jmp.2014.59088                

Abstract

A different combined effects for helium gas discharge such as: magnetic field strength, breakdown voltage, applied power, applied pressure, cathode fall thickness, edge effect, distribution of the electron temperature and density, and finally exposure time for Staphylococcus aureus substrate over slides at the cathode edge, are discussed under the influence of cold, nonthermal plasmas, ultra low pressure, and presence of the magnetic field for disinfection of bacteria for short exposure times, compatible to International Commission on Non-Ionizing Radiation Protection, Health Phys (ICNIRP) for healing applications. Furthermore, analyses of the experimental data of initial and final densities of cells alive, using survival curves, showed an impressive inhibitory effect of plasma discharge to the remaining survival of bacterial ratio under the influence of the magnetic field.

Keywords

DC Glow, Magnetic Field, Cathode Fall, Edge Effect, Non-Ionizing Radiation Protection, Health Phys ICNIRP

Conflicts of Interest

The authors declare no conflicts of interest.

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