First-principles study of field-emission from carbon nanotubes in the presence of methane

UBC Faculty Research and Publications

First-principles study of field-emission from carbon nanotubes in the presence of methane Kashefian Naieni, A.; Yaghoobi, Parham; Nojeh, Alireza

Abstract

Carbon nanotubes are promising candidates for field-emitters. It has been shown that the presence of various gases can enhance or degrade the performance of nanotube emitters. Small hydrocarbons are of particular interest because of their ability to enhance the emission properties. The authors report a simulation study of field-emission from a carbon nanotube exposed to methane in various configurations with an emphasis on calculating the emission current. The Hartree–Fock theory combined with a Green’s functions approach was used for the simulations. It was observed that the change in the emission current strongly depends on the particular arrangement of the methane molecules on the nanotube.

Item Metadata

Title	First-principles study of field-emission from carbon nanotubes in the presence of methane
Creator	Kashefian Naieni, A.; Yaghoobi, Parham; Nojeh, Alireza
Date Issued	2012
Description	Carbon nanotubes are promising candidates for field-emitters. It has been shown that the presence of various gases can enhance or degrade the performance of nanotube emitters. Small hydrocarbons are of particular interest because of their ability to enhance the emission properties. The authors report a simulation study of field-emission from a carbon nanotube exposed to methane in various configurations with an emphasis on calculating the emission current. The Hartree–Fock theory combined with a Green’s functions approach was used for the simulations. It was observed that the change in the emission current strongly depends on the particular arrangement of the methane molecules on the nanotube.
Genre	Article
Type	Text
Language	eng
Date Available	2013-05-18
Provider	Vancouver : University of British Columbia Library
Rights	Attribution-NonCommercial-NoDerivatives 4.0 International
DOI	10.14288/1.0070773
URI	http://hdl.handle.net/2429/44491
Affiliation	Applied Science, Faculty of; Electrical and Computer Engineering, Department of
Citation	Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, vol. 30 (2), pp. 021803-1-021803-7(Mar/Apr 2012);
Publisher DOI	10.1116/1.3684980
Peer Review Status	Reviewed
Scholarly Level	Faculty
Rights URI	http://creativecommons.org/licenses/by-nc-nd/4.0/
Aggregated Source Repository	DSpace

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