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The schematic of the discharge electrode system (a) and photograph of the plasma (b).
The survival rates for E.coli exposed to the air, or surface discharge plasmas with a treatment time of 30 s. The peak-to-peak voltage was remained at 17 kV. The survival rate for air blowing was obtained by exposing the filtering film to gas blowing without the ignition of the plasma.
The electrophoresis images of the E.coli filtering films exposed to the air, , and surface discharge plasmas with a treatment time of 30 s.
The applied voltage and current waveforms obtained using air as the discharge gas.
The emission spectrum of the air surface discharge plasma for (a) 250–700 nm. The insets (b) and (c) show the extended emission spectra.
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