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