Application of Low Temperature Plasma Technology in Crop Seeds

Low Temperature Plasma Technology Laboratory Equilibrium theory of cylindrical discharges with special application to helicons

Radiofrequency discharges used in industry often have centrally peaked plasma density profiles n(r) although ionization is localized at the edge, even in the presence of a dc magnetic field. This can be explained with a simple cylindrical model in one dimension as long as the short-circuit effect at the endplates causes a Maxwellian electron distribution. Surprisingly, a universal profile can b...

Application of Low-Temperature Plasma Processes for Biomaterials

Application of Cold Plasma Technology in Quality Preservation of Fresh Fig Fruit (Siyah): A Feasibility Study

Fig (Ficus carica L.) is a perishable fruit and it needs to use new techniques in order to increase shelf life of this product. In present study, atmospheric cold plasma as a non-thermal treatment was utilized for preserving fresh fig quality. Dielectric barrier discharge plasma was applied to fruits in two steps. Durations of first treatments were 1 and 5 minutes. Based on this step results, m...

Low Temperature Plasma Technology Laboratory Physical Mechanisms in Industrial RF Plasma Sources

RF plasma sources are essential for producing semiconductor chips, but they are developed empirically, with incomplete knowledge of how they work. Inductively coupled plasmas (ICPs) employ rf fields without a dc magnetic field B0 and produce ionization well outside the skin layer. Helicon sources with a B0 can generate much higher densities but pose a number of puzzling physical questions. Of t...

Catalytic and Non-catalytic Conversion of Methane to C2 Hydrocarbons in a Low Temperature Plasma

The direct conversion of methane to C2 hydrocarbons, in a quartz tube reactor enforced by a DC corona discharge, was investigated at atmospheric pressure. The process was carried out in the presence of metal oxide catalysts of Mn/W/SiO2, Mn/W/SiO2 (tetraethyl orthosilicate, TEOS), and Mn/W/CNT (supported on carbon nanotubes). The total yield to C2 hydrocarbons in the presence of metal oxide cat...