Journal ArticleDOI
Effect of Carrier Gas on the Growth Rate, Growth Density, and Structure of Carbon Nanotubes
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In a series of experiments on growing multiwall carbon nanotubes (MWNTs) by thermal chemical vapor deposition, this article found that the addition of carrier gas and carrier gas type can change the growth rate, growth density, and structures of MWNTs.Abstract:
We attempt to understand the fundamental factors that determine the growth rate of carbon nanotubes. In a series of experiments on growing multiwall carbon nanotubes (MWNTs) by thermal chemical vapor deposition, we found that the addition of carrier gas and the type of carrier gas can change the growth rate, growth density, and structures of MWNTs. We explain these results based on the dissociative adsorption of C2H2 on Fe nanoparticles and the vapor-liquid-solid (VLS) growth model. Finally, high-density, vertically aligned MWNTs were grown when decomposition and segregation rates of carbon were balanced.read more
Citations
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Fluidized bed catalytic chemical vapor deposition synthesis of carbon nanotubes-a review
Firoozeh Danafar,Ahmadun Fakhru’l-Razi,Ahmadun Fakhru’l-Razi,Mohd Amran Mohd Salleh,Dayang Radiah Awang Biak +4 more
TL;DR: In this article, a general overview of the key parameters in the CVD formation of carbon nanotubes is discussed, and the focus is then shifted to the fluidized bed reactors as an alternative for commercial production of CNTs.
Journal ArticleDOI
Full factorial design approach to carbon nanotubes synthesis by CVD method in argon environment
I. A. Mohammed,M. T. Bankole,Ambali Saka Abdulkareem,S. S. Ochigbo,Ayo Samuel Afolabi,O.K. Abubakre +5 more
TL;DR: In this paper, a statistical full factorial design of experiment was explored in the parametric studies of CNTs synthesis via acetylene-chemical vapour deposition (CVD).
Journal ArticleDOI
Effect of different carrier gases and their flow rates on the growth of carbon nanotubes
Aarti Tewari,Suresh C. Sharma +1 more
TL;DR: In this paper, the effect of different carrier gases and their flow rates on the growth of carbon nanotubes (CNTs) was examined, and it was concluded that Ar favors the formation of CNTs with larger height and radius.
Journal ArticleDOI
Patterning of Forests of Carbon Nanotubes (CNTs) Using Copper Overlayers as Iron Catalyst Deactivators
TL;DR: In this article, a simple technique to grow patterned carbon nanotube (CNT) forests by annealing the catalytic surface using copper patterns (as stencil or bridge) prior to, or during, CNT growth is presented.
References
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Journal ArticleDOI
Helical microtubules of graphitic carbon
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
Journal ArticleDOI
Vapor‐liquid‐solid mechanism of single crystal growth
R. S. Wagner,W. C. Ellis +1 more
Book
Carbon nanotubes : synthesis, structure, properties, and applications
TL;DR: In this article, the relationship of carbon nanotubes to other carbon materials has been discussed, and the properties of single-wall and multi-wall carbon Nanotubes have been investigated.
Journal ArticleDOI
Superhard and elastic carbon nitride thin films having fullerenelike microstructure.
TL;DR: In this article, the buckled and curved basal planes were found to have a distorted graphitel-like microstructure, and the buckling is due to the incorporation of pentagons in the basal planes, giving rise to a fullerenelike micro-structure.
Journal ArticleDOI
Growth model of bamboo-shaped carbon nanotubes by thermal chemical vapor deposition
Cheol Jin Lee,Jeunghee Park +1 more
TL;DR: In this paper, vertical aligned carbon nanotubes were grown on an iron-deposited silicon oxide substrate by thermal chemical vapor deposition of acetylene, and a base growth model was suggested for the bamboo-shaped carbon nano-tubes grown under their experimental conditions.