Effective strain in helical rippled carbon nanotubes: A unifying concept for understanding electromechanical response

Dong Bo Zhang, Traian Dumitricǎ

Research output: Contribution to journalReview articlepeer-review

19 Scopus citations

Abstract

Despite its importance, little is known about how complex deformation modes alter the intrinsic electronic states of carbon nanotubes. Here we consider the rippling deformation mode characterized by helicoidal furrows and ridges and elucidate that a new intralayer strain effect rather than the known bilayer coupling and θ-π orbital mixing effects dominates its gapping. When an effective shear strain is used, it is possible to link both the electrical and the mechanical response of the complex rippled morphology to the known behavior of cylindrical tubes. In combination with objective molecular dynamics, this concept may be useful for understanding the electromechanical characteristics of large scale carbon nanotube assemblies and other individual nanoscale forms of carbon.

Original languageEnglish (US)
Pages (from-to)6966-6972
Number of pages7
JournalACS nano
Volume4
Issue number11
DOIs
StatePublished - Nov 23 2010

Keywords

  • Carbon nanotubes
  • Elasticity
  • Electromechanical characteristics
  • Molecular dynamics
  • Nanoelectromechanical devices
  • Resilience

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