Ar/O2 Argon-Based Round Atmospheric-Pressure Plasma Jet on Sterilizing Bacteria and Endospores
| Autor: | K.-C. Liao, Zhi-Hua Lin, Chi Feng Su, M.-T. Ho, C.-Y. Tobias Tschang, Jong-Shinn Wu |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Nuclear and High Energy Physics Argon Materials science Scanning electron microscope Analytical chemistry chemistry.chemical_element Atmospheric-pressure plasma Plasma Condensed Matter Physics 01 natural sciences Endospore Oxygen 010305 fluids & plasmas law.invention chemistry law Optical Emission Spectrometer 0103 physical sciences Alcohol thermometer |
| Zdroj: | IEEE Transactions on Plasma Science. 44:3140-3147 |
| ISSN: | 1939-9375 0093-3813 |
| Popis: | In this paper, we want to develop and characterize a round argon-based nonthermal atmospheric-pressure plasma jet (APPJ) with an application of sterilization. We measured the basic properties of APPJ by an alcohol thermometer, an optical emission spectrometer (OES), a high-voltage probe and a Rogowski coil. The plasma jet temperature at the tube exit is lower than 37 °C, which will not induce damage to living tissue. The plasma absorbed power is about 2.7 W. The OES data indicate that this APPJ has a relatively high intensity of hydroxyl radicals (OH) in postdischarge region. Furthermore, we applied this device to inactivate the bacteria ( E. coli and B. subtilis ) and endospore (B. subtilis endospore). In addition, the trace amount of oxygen addition (0.04%) into working gas can not only enhance the OH radicals but also speed up the killing of bacteria and endospore. The results of D value and scanning electron microscope images show its great potential for the use of general sterilization in the future. |
| Databáze: | OpenAIRE |
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