Journal ArticleDOI
Electronic band structure of carbon nanotubes: toward the three-dimensional system
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In this paper, a modified tube and higher-dimensional systems for which they calculate the electronic band structure using a simple tight-binding model were constructed. And they elucidate new features of the energy band resulting from such constructions.Abstract:
Nanotubes can be easily modified by introducing pentagons and heptagons into the hexagonal network. We construct a modified tube and higher-dimensional systems, for which we calculate the electronic band structure using a simple tight-binding model. We elucidate new features of the energy band resulting from such constructions.read more
Citations
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Journal ArticleDOI
Carbon Nanotubes for Next-Generation Electronics Devices
TL;DR: In this paper, Saito discusses the use of carbon nanotubes to create nanometer-scale devices known as diodes, which make excellent use of quantum effects on the nanometer scale.
Journal ArticleDOI
Y-junction carbon nanotubes grown by in situ evaporated copper catalyst
B. Gan,J. Ahn,Qichun Zhang,Rusli,Soon Fatt Yoon,J. Yu,Q.F. Huang,K. Chew,V.A Ligatchev,X.B. Zhang,Li Woyuan +10 more
TL;DR: In this article, an atomic configuration involving six heptagons on the three saddle surfaces is proposed to understand the topological structure of the observed Y-junction carbon nanotubes, which can be presented in structure as a combination of two bend junctions.
Journal ArticleDOI
Carbon Nanotube Based Molecular Electronic Devices
Madhu Menon,Deepak Srivastava +1 more
TL;DR: In this paper, complex three-point junctions of single-walled carbon nanotubes are proposed as building blocks of nanoscale electronic devices, and the proposed complex junctions have been found to be local minima of the total energy on relaxation with a generalized tight-binding molecular dynamics scheme.
Journal ArticleDOI
Branching carbon nanotubes deposited in HFCVD system
TL;DR: The branching carbon nanotubes were observed to be uniformly "Y" shaped as mentioned in this paper, and a broadened graphite (0002) diffraction spot in EDP from the nanotube ‘Y' junction was also observed as a result of negative curvature surfaces.
Journal ArticleDOI
Topological structure of Y-junction carbon nanotubes
Bo Gan,J. Ahn,Qichun Zhang,Q.F. Huang,Chew Kerlit,S.F. Yoon,Rusli,V.A Ligachev,Xinyu Zhang,Wenjiang Li +9 more
TL;DR: In this article, a fish-bone-like feature has been observed on the tubes around the Y-junction, and a speculation of the topological structure of single-walled CNTs has been made by adopting the feature.
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.
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New one-dimensional conductors: Graphitic microtubules.
TL;DR: It is predicted that carbon microtubules exhibit striking variations in electronic transport, from metallic to semiconducting with narrow and moderate band gaps, depending on the diameter of the tubule and on the degree of helical arrangement of the carbon hexagons.
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Electronic structure of chiral graphene tubules
TL;DR: In this paper, the electronic structure for graphenemonolayer tubules is predicted as a function of the diameter and helicity of the constituent graphene tubules, and it is shown that approximately 1/3 of these tubules are a one-dimensional metal which is stable against a Peierls distortion, and the other 2/3 are onedimensional semiconductors.
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Are fullerene tubules metallic
TL;DR: It is estimated that the mean-field transition temperature from a Peierls-distorted regime to a high-temperature metallic regime should be well below room temperature.
Journal ArticleDOI
Electronic structure of graphene tubules based on C 60
TL;DR: A simple tight-binding model shows that some fibers are metallic and are stable against perturbations of the one-dimensional energy bands and the mixing of σ and π bands due to the curvature of the circumference of the fiber.