Figure 1
source and monitoring apparatus (oscilloscope). The patterned electrode and HV source are globally grounded. A coverslip inoculated with a bacteria sample is placed on top of the ground electrode. (c) The equivalent circuit, where CB is the capacitance of the flex-DBD device excluding the rectangular cavities, CBC is the capacitance of the solid portion and Cg and Rg are the capacitance and resistance of the open air portion of the cavities, CM is the measurement capacitor, and L and RL are the inductance and the resistance of the secondary coil of the high voltage transformer of the high frequency power source. (d) As the applied voltage increases, a greater part of the surface of flex-DBD lights up.
The flex-DBD is based on a printed circuit design and operates at < 3 kV, ~ 40 kHz, < 0.5 W/cm2 supplied by a portable power source. (a) The design of flex-DBD consists of conducting (copper) and insulating (polyimide) layers and a patterned ground electrode. (b) The experimental setup includes a portable pulsed ac high voltage (HV)
