A novel plasma source for sterilization of living tissues

Details A novel plasma source for sterilization of living tissues A novel plasma source for sterilization of living tissues

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11k5014m&link_type=abstract

New Journal of Physics, Volume 11, Issue 11, pp. 115014 (2009).

Physics

3

Scientific paper

A source for the production of low-power plasmas at atmospheric pressure, to be used for the nondamaging sterilization of living tissues, is presented. The source, powered by radiofrequency and working with a helium flow, has a specific configuration, studied to prevent the formation of electric arcs dangerous to living matter. It is capable of killing different types of bacteria with a decimal reduction time of 1-2 min; on the contrary, human cells such as conjunctival fibroblasts were found to be almost unharmed by the plasma. A high concentration of OH radicals, likely to be the origin of the sterilizing effect, is detected through their UV emission lines. The effect of the UV and the OH radicals on the fibroblasts was analysed and no significant effects were detected.

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