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Anodic arc discharge: Why pulsed?

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/5.0002872· OSTI ID:1638718
 [1];  [2];  [3];  [2]
  1. George Washington University, Washington, DC (United States); Tech-X Corporation
  2. George Washington University, Washington, DC (United States)
  3. 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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  • Gudmundsson, J. T.; Brenning, N.; Lundin, D.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 30, Issue 3 https://doi.org/10.1116/1.3691832
journal May 2012

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