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Electric field-induced unzipping of hydrogenated carbon nanotubes into graphene nanoribbons
- Authors
- Lee, Kyu Won; Lee, Cheol Eui
- Issue Date
- 3월-2014
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Unzipping carbon nanotubes; Graphene nanoribbons; Hydrogenated carbon nanotubes; Density functional theory
- Citation
- CURRENT APPLIED PHYSICS, v.14, no.3, pp.337 - 339
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 14
- Number
- 3
- Start Page
- 337
- End Page
- 339
- ISSN
- 1567-1739
- Abstract
- We have investigated the electric field effect on horseshoe-shape carbon nanotubes (CNTs) resulting from hydrogen adsorption on the single-wall armchair (n,n)CNTs with 6 <= n <= 16 by using the density functional theory calculations. The horseshoe-shape CNT is completely unzipped into a graphene nanoribbon upon applying a critical electric field, which decreases with increasing CNT diameter, thus enabling one to select a nanoribbon width. A simple model based on the tensile force exerted on the tube walls by the applied electric field was introduced to understand the CNT-diameter dependence of the critical field. (C) 2013 Elsevier B. V. All rights reserved.
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