Effect of surface energy on tensile deformation of nanotubes

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Abstract

Using the theory of linear elasticity, the effect of surface energy on tensile deformation of nanotubes is analysed. A closed-form solution of the stress field in a nanotube is derived. The surface energy creates internal stress in the nanotube and causes an increase in the tensile stress required to produce the same amount of tensile strain for a nanotube of the same size without the action of surface energy. The internal stress is a function of the surface energies of inner and outer surfaces and is dependent on the size of the nanotube. The tensile stress is a linear function of the tensile strain and is dependent on the size of the nanotube in contrast to direct proportionality between tensile stress and tensile strain for the tensile deformation of linear elastic materials.

Original languageEnglish
Article number165410
JournalJournal of Physics D: Applied Physics
Volume42
Issue number16
DOIs
StatePublished - 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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