PURPOSE We investigated a newly developed bipolar and multipolar RF ablation system with an internally cooled electrode and resistance controlled power output in a standardized model of perfused ex vivo kidney tissue. MATERIALS AND METHODS RF energy was applied at different power levels (20, 30 and 60 W) for 1, 3, 5 and 9 minutes. Each treatment parameter was repeated 5 times. For the 20/30 W...

A compact repetitive Marx generator and a High Power Microwave (HPM) source based on a matched reflex triode has been developed and tested. The Marx generator rated at 1 kJ, 300 kV, 12 kA, 10 Hz, is suitable to drive the reflex triode directly. Bipolar charging of the Marx generator has been used to get lower system inductance and consequently faster output rise time with relatively low chargin...

Recent studies proved that classical bio-effects induced by nanosecond pulsed electric field (nsPEF) can be reduced the delivery of a negative polarity pulse generated immediately after positive pulse. This phenomenon is known as “bipolar cancellation” and it was reported for wide range bipolar pulses with duration from 2 ns to 900 ns. On contrary, paired pulses, i.e., two identical same polari...

A high-yield D-T neutron generator has been developed for neutron interrogation in homeland security applications such as cargo screening. The generator has been designed as a sealed tube with a performance goal of producing 5·10 n/s over a long lifetime. The key generator components developed are a radio-frequency (RF) driven ion source and a beamloaded neutron production target that can handl...

This paper presents a piezoelectric energy harvesting system demonstrating the output power enhancement when using a CMOS integrated pulsed-resonance converter (PRC) instead of a simple Schottky diode bridge rectifier. The combination of a storage capacitor, a blinking light emitting diode (LED) and a voltage detector forms a fixed voltage regulator and visualizes the output power extracted out...