Kenneth A Cornell, Kate Benfield, Tiffany Berntsen, Jenna Clingerman, Adam Croteau, Spencer Goering, Daniel Moyer, Mariah Provost, Amanda White, Don Plumlee, Julia T Oxford, Jim Browning
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A Cold Atmospheric Pressure Plasma Discharge Device Exerts Antimicrobial Effects.
A cold atmospheric pressure plasma device was developed using two parallel plates of Low Temperature Co-fired Ceramic with embedded electrodes. The 2.4 cm wide by 1 mm deep plasma discharge operates at 20 kHz with a 2-5 kV AC drive signal across a 0.25 mm gap. Mixed Argon/oxygen plasmas were directed between the plates to flow toward a bacterial biofilm sample for treatment. Results showed that at 4-5 kV the plasma etched away a bacterial biofilm on glass in 10 minutes. In addition, we showed that short plasma treatments rapidly killed biofilm resident bacteria with ED90 values of <15 s.
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