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TECHNICAL PAPERS

Electron Transport in Deformed Carbon Nanotubes

[+] Author and Article Information
H. T. Johnson, B. Liu, Y. Y. Huang

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign

J. Eng. Mater. Technol 126(3), 222-229 (Jun 29, 2004) (8 pages) doi:10.1115/1.1743426 History: Received December 15, 2002; Revised March 01, 2004; Online June 29, 2004
Copyright © 2004 by ASME
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References

Figures

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Geometry and chirality of a single wall carbon nanotube. All positions and angles in an undeformed or homogeneously deformed nanotube are uniquely determined if vectors a1 and a2, and lengths a3,a4, and a5 are known.
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Illustration of the shuffle degree of freedom. If the hexagonal lattice is homogeneously deformed according to some deformation gradient F , then the dark circle triangular sublattice will need to displace relative to the open circle triangular sublattice in order to reach a minimum energy configuration.
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E(k) electron energy band structure for (5,5) nanotube. The horizontal line is used to construct the M(E) figure for the nanotube; each intersection between the horizontal line and the E(k) curves indicates an active conducting channel.
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Number of conducting channels, M(E), for a (5,5) nanotube
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Current versus voltage in a deformed (5,5) nanotube
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Fine structure in current versus voltage in a deformed (5,5) nanotube
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Relative current difference with tension and torsion in a (5,5) nanotube. The reference current I0 is the current in an undeformed (5,5) nanotube.
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Effect of temperature on the I(V) relationship in a (5,5) nanotube
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Current versus voltage in a (5,5) nanotube undergoing tension or compression
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Normalized current versus voltage in a (5,5) nanotube undergoing tension or compression. The current is normalized by the number of electrons per unit length in the nanotube.
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Number of conducting channels and current versus voltage relationship for a (9,0) nanotube
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Number of conducting channels and current versus voltage relationship for a (10,0) nanotube
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Number of conducting channels and current versus voltage relationship for a (9,6) nanotube
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Number of conducting channels and current versus voltage relationship for a (6,4) nanotube
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Normalized current versus voltage relationship for all nanotubes. The current is normalized by the number of electrons per unit length in the nanotube.

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