Anodic arc discharge: Why pulsed?
- George Washington University, Washington, DC (United States); Tech-X Corporation
- George Washington University, Washington, DC (United States)
- Tech-X Corporation, Boulder, CO (United States)
Pulsed anodic arc discharge is a novel synthesis method of nanomaterials by means of low-temperature atmospheric plasma. The technique consists in periodically supplying DC power to two vertically aligned electrodes in the form of short unipolar pulses with peak currents of a few hundred Amperes in helium atmosphere. The pulsed arc plasmas are sustained at frequencies of the order of 1 Hz with around 10% of duty cycle. It constitutes a versatile technique thanks to a series of advantages compared to continuous DC arc processes, in particular: flexibility in the experimental conditions, process stability and repeatability, better utilization of ablating anode material, lower production of macroparticles, and lower thermal loads. Such features are discussed in this article. A brief overview concerning the recent accomplishments of pulsed arc discharge on deposition of carbon nanostructures (graphene and carbon nanotubes) and few-layer flakes of molybdenum disulphide (MoS2) is provided, as well as an outlook on future applications of this method for the discovery of new materials with tailored functional properties.
- Research Organization:
- Tech-X Corporation, Boulder, CO (United States); George Washington University, Washington, DC (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Science Foundation
- Grant/Contract Number:
- SC0015767
- OSTI ID:
- 1638718
- Alternate ID(s):
- OSTI ID: 1617989
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 27; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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