Nano Archive

Electronic structure of finite-length carbon nanotubes: Crossover from fullerenes to nanotubes

Okada, Susumu (2007) Electronic structure of finite-length carbon nanotubes: Crossover from fullerenes to nanotubes. NANO, 2 (1). pp. 51-57.

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Official URL: http://dx.doi.org/10.1142/S1793292007000349

Abstract

Finite-size effects in armchair (n, n) carbon nanotubes are studied as a function of the tube length by using the generalized tight-binding calculations. End structures of the tubes considered here are caps formed from hemispherical pieces of I-h fullerenes and hydrogen-free open ends. It has been clarified that the dimensionality in electronic structures of the finite-length nanotubes only depends on an aspect ratio of the tube diameter to the length of the cylindrical region. The aspect ratio where the finite-length tubes exhibit one-dimensional properties is found to be about four. The results corroborate that the nanotubes with their length of 10-100 nm experimentally observed could be regarded as one-dimensional electron systems.

Item Type:Article
Uncontrolled Keywords:nanotube; fullerenes; dimensionality
Subjects:Physical Science > Nano objects
Physical Science > Nanoelectronics
Material Science > Nanochemistry
Material Science > Nanostructured materials
ID Code:2973
Deposited By:Anuj Seth
Deposited On:12 Jan 2009 12:15
Last Modified:20 Jan 2009 11:58

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