Abstract
Chemical characteristics and bactericidal properties of two low-temperature atmospheric-pressure Ar plasma devices are investigated: one of them with UV and the other with almost no UV on treated samples. The control of the UV radiation is achieved by two nozzles. One has a straight shape, and the other has a 90°-bent. The bent nozzle blocks the light produced inside the torch, whilst allowing the plasma gas to reach the samples. The use of the straight nozzle allows the treatment by both the plasma gas and UV. We demonstrate that even an almost UV-free plasma treatment has bactericidal properties. Our measurements suggest that reactive species represent the main bactericidal factor of our low-temperature plasma.
Original language | English |
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Pages (from-to) | 288-293 |
Number of pages | 6 |
Journal | Plasma Processes and Polymers |
Volume | 7 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 2010 Mar 22 |
Externally published | Yes |
Keywords
- Disinfection
- Low-temperature atmospheric plasmas
- Microwave discharges
- Plasma treatment
- Uv light
ASJC Scopus subject areas
- Condensed Matter Physics
- Polymers and Plastics