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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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Figures

Grahic Jump Location
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.
Grahic Jump Location
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.
Grahic Jump Location
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.
Grahic Jump Location
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.
Grahic Jump Location
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.
Grahic Jump Location
Number of conducting channels and current versus voltage relationship for a (9,0) nanotube
Grahic Jump Location
Number of conducting channels and current versus voltage relationship for a (10,0) nanotube
Grahic Jump Location
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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