نتایج جستجو برای: electrical arc discharge method

تعداد نتایج: 1910876  

2004

Carbon nanotubes are generally produced by three main techniques, arc discharge, laser ablation and chemical vapour deposition. Though scientists are researching more economic ways to produce these structures. In arc discharge, a vapour is created by an arc discharge between two carbon electrodes with or without catalyst. Nanotubes self-assemble from the resulting carbon vapour. In the laser ab...

2014
A. TAMOŠIŪNAS P. VALATKEVIČIUS V. GRIGAITIENĖ V. VALINČIUS

The operational characteristics of the experimental direct current plasma torch with water vapor stabilization of the arc discharge and diagnostics of generated plasma jet at the nozzle exhaust of the torch were studied in this research. The operation parameters of the torch are presented in terms of generalized thermal and electrical characteristics, which were compared with equations for stea...

2010
M. Keidar A. Shashurin O. Volotskova I. I. Beilis

Plasma enhanced techniques are widely used for synthesis of carbon nanostructures. The primary focus of this paper is to summarize recent experimental and theoretical advances in understanding of single-wall carbon nanotube SWNT synthesis mechanism in arcs, and to describe methods of controlling arc plasma parameters. Fundamental issues related to synthesis of SWNTs, which is a relationship bet...

2007

The most common method used to fabricate carbon nanotubes is electric-arc discharge. An electric arc is an electrical breakdown of a gas which produces an ongoing plasma discharge, similar to the instant spark, resulting from a current flowing through normally nonconductive material such as air. The arc occurs in the gas-filled space between two conductive electrodes (often made of carbon) and ...

2010
H. Inoue H. Miura Y. Kayano K. Miyanaga

Abstract. Since electromagnetic (EM) noise resulting from an arc discharge disturbs other electric devices, parameters on electromagnetic compatibility, as well as lifetime and reliability, are important properties for electrical contacts. To clarify the characteristics and the mechanism of the generation of the EM noise, the current noise up to GHz band frequency generated by slowly breaking c...

2011
Jian Li Alexey Shashurin Michael Keidar

Anodic arc discharge supported by the erosion of the anode material is one of the most practical and efficient methods to synthesize various high-quality carbon nanostructures including nanotubes, graphene due to its relatively higher growth temperature and eco-friendly procedures. In order to increase the arc controllability of the as-synthesized products, we introduced a non-uniform magnetic ...

2016
Xiuqi Fang Alexey Shashurin George Teel Michael Keidar

Arc discharge is one of the most efficient and environmental friendly method to synthesize Single Wall Carbon Nanotube (SWCNT). However, due to the ultra-fast synthesis procedure, localization of the SWCNT synthesis in an arc discharge plasma volume in situ has been a long standing problem. This relates to the ability of controlling volumetric synthesis of nanostructures in plasmas in general. ...

Journal: :Grail of science 2022

With the development of modern Nano science, interest in study and carbon-based samples has increased. In paper [1], R.G.Abaszade others made purchase graphene-based by Hummer method examination obtained was carried out. [2-7,10] structural electrical properties grapheme-based were studies conducted for application these solar panels. addition to this, examples modeling hybrid energy systems vo...

Journal: :Science and technology of advanced materials 2010
C N R Rao K S Subrahmanyam H S S Ramakrishna Matte B Abdulhakeem A Govindaraj Barun Das Prashant Kumar Anupama Ghosh Dattatray J Late

Graphenes with varying number of layers can be synthesized by using different strategies. Thus, single-layer graphene is prepared by micromechanical cleavage, reduction of single-layer graphene oxide, chemical vapor deposition and other methods. Few-layer graphenes are synthesized by conversion of nanodiamond, arc discharge of graphite and other methods. In this article, we briefly overview the...

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