Publication details

Multi-electrode sequentially pulsed coplanar barrier discharge for the transport of bulk materials



Year of publication 2018
Type Article in Proceedings
Conference SPPT 2018 in Plasma Physics and Technology; vol. 5, no. 1 - Abstracts, Fast tracking
MU Faculty or unit

Faculty of Science

Description The natural tendency of fine powders to concentrate outside the microfilament plasma channel was utilized to induce their unidirectional drift across the active plasma zone. A coplanar barrier discharge with multiple (i.e. 3 and 4) individually driven electrodes was devised, together with two different types of high-voltage power supplies. Discharge plasma was sequentially ignited between the given electrode pair, forming a travelling wave of active plasma zone. The presence of bulk material transport was demonstrated on stained glass microbeads of 100-200 µm average diameter. Two important constrains were identified: (1) only a thin powder layer can be effectively manipulated; (2) driving frequency is inversely proportional to the mass of transported powders. The 3-electrode system exhibited the str ongest transport properties for the tested material. The 4-electrode system simplified the design of multiphase HV power supply, with still reasonably strong powder transport.
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