A bench arc-furnace facility for fullerene and single-wall nanotubes synthesis

Huber, J.G.; Romero, José Gino Venegas; Spivey, James David; Luengo, C.A.

doi:10.1590/s0100-40422001000600029

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…Material (i) was purchased from Nanoledge; material (ii) was made by our group in an arc system similar to that 25, where helium at about half atmospheric pressure was used, producing a mixture of CNTs and soot. This "homemade" material was used without further purification.…”

Section: Methodsmentioning

confidence: 99%

Selection of nanostructures for porous field‐emission display

Mammana¹,

Hering²,

Paulo³

et al. 2007

J Soc Info Display

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This paper describes the evaluation of nanostructures to be integrated into porous fieldemission displays (pFEDs), based on a multilayer of copper and polyimide, pierced by holes. The evaluation work is based on diode-mode measurements performed with carbon nanotubes and nanostructured copper oxide samples obtained through wet chemical processes. A special characterization tool, based on the curve method, was used to obtain current vs. field characteristics in a repetitive and reproducible method. Histograms of threshold fields for 46 samples are presented, allowing for a comparison between different methods of nanostructure formation, which shows that carbon nanotubes yield a threshold field which is at least five times smaller than that for copper oxides.

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Section: Methodsmentioning

confidence: 99%

Selection of nanostructures for porous field‐emission display

Mammana¹,

Hering²,

Paulo³

et al. 2007

J Soc Info Display

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“…The SWCNTs were produced by the arc-discharge method as reported in detail earlier 11 . The anode was a 6.2 mm diameter graphite rod, 100 mm long.…”

Section: Methodsmentioning

confidence: 99%

“…The advance rate was such as to reduce a 100 mm rod to a stub in about eight minutes. The soot from the collar was chosen as sample because it was found to be richer in SWCNTs than those from the cathode deposit or the interior walls 11 . The growth conditions were strictly the same for all samples.…”

Section: Methodsmentioning

confidence: 99%

A step toward production of smaller diameter single wall carbon nanotubes

et al. 2003

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Single-wall carbon nanotubes were produced with, either, a bimetallic or a mixture of three catalysts. Raman scattering and high resolution transmission electron microscopy were used as characterization tools. The mixture LiNi0.5Co0.5O2 leaded to a sample relatively free from impurities with long bundles, each containing a few tubes. A narrow distribution of diameters for the sample produced with this mixture was evidenced by Raman scattering experiences. The mean tube diameter was found to be smaller than those measured for the nanotubes obtained with the bimetallic catalysts, Fe/Ni and Ni/Co. Possible chiralities were calculated for the semiconductor nanotubes formed. Assignments of the Raman radial breathing mode frequencies to the calculated structures are presented

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“…Luengo (IFGW-Unicamp) was the first to synthesize single-walled nanotubes in Brazil. The experiments were done during the visit of J. G. Huber to Unicamp [21]. In 2000, the group of L. O. Ladeira (DF-UFMG) started the production of carbon nanotubes at UFMG using the arc discharge method and were able to produce single-wall nanotubes of high quality.…”

Section: The Beginning Of Production and Fundamental Studies Of Carbomentioning

confidence: 99%

History and National Initiatives of Carbon Nanotube and Graphene Research in Brazil

2019

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In this article, we first introduce and discuss the fundamental science of carbon nanomaterials (especially nanotubes and graphene) and the different technological applications from using these materials. We then discuss the first works of Brazilians scientists, done in collaboration with scientists of other countries and, in particular, the role of Prof. M. S. Dresselhaus from MIT, US, in the development of the nanocarbon science in Brazil. We briefly discuss some experimental and theoretical works about nanotubes and graphene done in Brazil in the late 1990s and early 2000s, and the formation of the first Brazilian network on carbon nanotubes in 2005. We present the activities of the National Institute of Science and Technology (INCT) in Carbon Nanomaterials (CN) created in 2009. A scientometric analysis is used to describe the INCT-CN network formation. Finally, we present the Center of Technology in Nanomaterials (CTNano) installed at UFMG, where pilot plants were developed to produce graphene and nanotubes at large scales, and the work being done at the center in collaboration with companies aiming to solve specific technological problems and to create bridges between the academic and the industrial sectors.

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A bench arc-furnace facility for fullerene and single-wall nanotubes synthesis

Abstract: Recebido em 9/6/00; aceito em 21/3/01 A metallic-sample arc-furnace was modified to synthesize fullerenes and nanotubes. The (reversible) changes and the process for producing single-wall nanotubes (SWNTs) are described.

Cited by 8 publications

References 3 publications

Selection of nanostructures for porous field‐emission display

Selection of nanostructures for porous field‐emission display

A step toward production of smaller diameter single wall carbon nanotubes

History and National Initiatives of Carbon Nanotube and Graphene Research in Brazil

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