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

Kyu Won Lee, Cheol Eui Lee

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


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
Issue number3
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 .


  • 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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