Size dependent nonlinear elastic scaling of multiwalled carbon nanotubes

Author (s): Arias I., Arroyo, M.
Journal: Physical Review Letters

Volume: 100, Issue 8
Date: 2008

We characterize through large-scale simulations the nonlinear elastic response of multi-walled carbon nanotubes (MWNCNTs) in torsion and bending. We identify a unified law consisting of two distinct power-law regimes in the energy-deformation relation. This law encapsulates the complex mechanics of rippling and is described in terms of elastic constants, a critical length-scale and an harmonic energy-deformation exponent. The mechanical response of MWCNTs is found to be strongly size-dependent, in that the critical strain beyond which they behave nonlinearly scales as the
inverse of their diameter. These predictions are consistent with available experimental observations.



  author = {Arias, I. and Arroyo, M.},
  title = {Size-Dependent Nonlinear Elastic Scaling of Multiwalled Carbon Nanotubes},
  journal = {Phys. Rev. Lett.},
  volume = {100},
  issue = {8},
  pages = {085503},
  numpages = {4},
  year = {2008},
  month = {Feb},
  publisher = {American Physical Society},
  doi = {10.1103/PhysRevLett.100.085503},
  url = {http://link.aps.org/doi/10.1103/PhysRevLett.100.085503}