| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Deactivation of Enterococcus Faecalis Bacteria by an Atmospheric Cold Plasma Brush |
| CHEN Wei1**, HUANG Jun1, DU Ning2, LIU Xiao-Di2, LV Guo-Hua1, WANG Xing-Quan1, ZHANG Guo-Ping1, GUO Li-Hong2, YANG Si-Ze1,3 |
1Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190
2Department of Oral Biology, Peking University School and Hospital of Stomatology, Beijing 100080
3Fujian Key Laboratory for Plasma and Magnetic Resonance, Department of Aeronautics, School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005 |
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CHEN Wei, HUANG Jun, DU Ning et al 2012 Chin. Phys. Lett. 29 075203 |
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Abstract An atmospheric cold plasma brush suitable for large area and low-temperature plasma-based sterilization is designed and used to treat enterococcus faecalis bacteria. The results show that the efficiency of the inactivation process by helium plasma is dependent on applied power and exposure time. After plasma treatments, the cell structure and morphology changes can be observed by scanning electron microscopy. Optical emission measurements indicate that reactive species such as O and OH play a significant role in the sterilization process.
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Received: 20 February 2012
Published: 29 July 2012
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