Molecular growth paths and dust‐particles nucleation precursors in Ar/C ₂ H ₂ low pressure discharges

Self-Organization of Atmospheric Pressure Carbon Arc Discharges

The atmospheric pressure carbon arc in inert gases is an important method for the production of nanomaterials [1]. Typical nanosynthesis arcs operate in a dc mode between a graphite anode, which is consumed, and a cathode which can be made from either graphite or a lower melting point material [2]. In spite of many studies, the basic physical processes in this discharge such as cathode electron...

Activation energy paths for graphene nucleation and growth on Cu.

The synthesis of wafer-scale single crystal graphene remains a challenge toward the utilization of its intrinsic properties in electronics. Until now, the large-area chemical vapor deposition of graphene has yielded a polycrystalline material, where grain boundaries are detrimental to its electrical properties. Here, we study the physicochemical mechanisms underlying the nucleation and growth k...

Transition characteristics of low-pressure discharges in a hollow cathode

Near-surface generation of negative ions in low-pressure discharges

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On the Stability of Electric Arc Discharges

The stability of electric arc discharges has been explored through the use of an energy balance coupled with charge conservation. In order to facilitate this analysis, a new model for the electrical conductivity function has been proposed. Asymptotic solutions for the arc governing equations have been obtained. Stability criteria have been developed from both the linear theory (infinitesimal si...