Current-voltage monitoring of plasma arc discharge submerged in water for nanoparticles fabrication

The development of nanotechnology increased since the discovery of C60 in 1985. Due to its great potential the methods of synthesis nanomaterials are growing significantly compared with other methods i.e., laser ablation, arc discharge, etc. Arc discharge in fliud which is simple and cheap method produced high purity carbon nanoparticles with a few defect and high flexiblity. This study presents electrical properties measurement of arc discharge process using the high purity graphite (99,9% carbon) submerged in deionized water. Monitoring of current and voltage is required to understand electrodes gap and power consumption of arc discharge process. The current monitoring sensor device was made using Hall-based current sensor, while voltage value was measured directly between two electrodes in the real time. The current and voltage values were measured and analized by varying the current from the arc source i.e., 10, 20, 40, 70 and 100 A. As a results, increasing the current level and electrode gap affect in increasing power consumption of the arc discharge.