Journal ArticleDOI
Field emission properties of modified carbon nanotubes grown on Fe-coated glass using PECVD with carbon monoxide
Jung Hoon Han,S. H. Choi,T. Y. Lee,Ji-Beom Yoo,C. Y. Park,Taewon Jeong,Hyun-Chul Kim,Yong-Gook Park,I. T. Han,Jungna Heo,Chang-Soo Lee,Jeonghee Lee,SeGi Yu,W.K. Yi,J.M. Kim +14 more
TLDR
In this paper, the emission characteristics of carbon nanotubes (CNTs) grown on Fe-coated glass using mixed gases of CO and NH 3 were investigated by varying the growth time and growth condition including in situ re-etching and/or re-growth of CNTs.Abstract:
Field emission characteristics of carbon nanotubes (CNTs) grown on Fe-coated glass using mixed gases of CO and NH 3 were investigated by varying the growth time and growth condition including in situ re-etching and/or re-growth of CNTs. An increase in growth time resulted in a reduction of a turn-on electric field. However, additional in situ re-etching and re-growth of CNTs after the initial growth yielded a decrease in the emission current from CNTs with a similar turn-on field to as-grown CNTs.read more
Citations
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Journal ArticleDOI
An overview on methods for the production of carbon nanotubes
Nabisab Mujawar Mubarak,Nabisab Mujawar Mubarak,Ezzat Chan Abdullah,N.S. Jayakumar,Jaya Narayan Sahu,Jaya Narayan Sahu +5 more
TL;DR: A brief survey of experimental work directed towards the synthesis of carbon nanotubes has been discussed in this article, where various methods of production of CNTs are explained outlining their capabilities, efficiencies and possible exploitation as economic large scale production.
Journal ArticleDOI
Preparation of thin carbon nanotubes by catalytic pyrolysis on a support
TL;DR: In this paper, the preparation of single-walled, doublewalled and thin multiwalled nanotubes by hydrocarbon pyrolysis or carbon monoxide catalytic decomposition is considered.
Journal ArticleDOI
Growth Mechanism and Field Emission Properties of Nickel Nanocones Array Fabricated by One-Step Electrodeposition
Journal ArticleDOI
Effect of oxygen and hydrogen addition on the low-temperature synthesis of carbon nanofibers using a low-temperature CO/Ar DC plasma
Shinsuke Mori,Masaaki Suzuki +1 more
TL;DR: In this article, a low-temperature synthesis of carbon nanofibers was demonstrated, where a small amount of O 2 was added to the CO/Ar plasma, and the diameter of the CNFs decreased and the deposition of amorphous carbon and fiber bundling were suppressed.
Journal ArticleDOI
Catalyst-free low-temperature growth of carbon nanofibers by microwave plasma-enhanced CVD
Shinsuke Mori,Masaaki Suzuki +1 more
Abstract: Catalyst-free low-temperature growth of carbon nanofibers was performed by a microwave plasma-enhanced chemical vapor deposition using CO/Ar/O 2 system. At the optimum oxygen concentration of O 2 /CO = 7/1000, vertically aligned CNFs can be synthesized at temperature as low as 180 °C without any catalyst materials, whose diameter is about 50–100 nm and growth rate is about 5 nm/s. It is concluded that the addition of a small amount of O 2 is the key for the synthesis of CNFs without catalyst, because it suppresses the isotropic deposition of amorphous carbon and assists the anisotropic linear growth of crystallized carbon deposits.
References
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Journal ArticleDOI
Current saturation mechanisms in carbon nanotube field emitters
TL;DR: In this paper, the authors demonstrate that an individual carbon nanotube exhibits current saturation above 100 nA of emission current, and that this current saturation is a direct result of an adsorbate-enhanced field emission mechanism.
Journal ArticleDOI
Unique characteristics of cold cathode carbon-nanotube-matrix field emitters
TL;DR: In this paper, the authors studied the attributes of electron field emission from disordered matrix arrays of carbon nanotubes and found that the emission characteristics are quite reproducible in spite of the disorder, density, and quality variations from sample to sample.
BookDOI
Science and application of nanotubes
TL;DR: In this article, a simulation of STM images and STS Spectra of carbon nanotubes using an Arc Discharge is presented, along with an analysis of the effect of defects and polyhedral caps.
Journal ArticleDOI
Structural change at the carbon-nanotube tip by field emission
TL;DR: In this paper, the deformed structure of a closed carbon nanotube is explained by heterogeneous nucleation of the pentagonal and heptagonal carbon ring pairs, and that of the opened one is represented by sp3-like line defects in the hexagonal carbon network.