Electric field-induced unzipping of hydrogenated carbon nanotubes into graphene nanoribbons

Kyu Won Lee, Cheol Eui Lee

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    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.

    Original languageEnglish
    Pages (from-to)337-339
    Number of pages3
    JournalCurrent Applied Physics
    Volume14
    Issue number3
    DOIs
    Publication statusPublished - 2014 Mar

    Bibliographical note

    Funding Information:
    This work was supported by the National Research Foundation of Korea (No. 2013057555 , 2012034779 , and NRF-2010-0027963 ). K.W.L. was supported by a Korea University Grant .

    Keywords

    • Density functional theory
    • Graphene nanoribbons
    • Hydrogenated carbon nanotubes
    • Unzipping carbon nanotubes

    ASJC Scopus subject areas

    • General Materials Science
    • General Physics and Astronomy

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