Radial elasticity of multiwalled carbon nanotubes.

We report an experimental and a theoretical study of the radial elasticity of multiwalled carbon nanotubes as a function of external radius. We use atomic force microscopy and apply small indentation amplitudes in order to stay in the linear elasticity regime. The number of layers for a given tube radius is inferred from transmission electron microscopy, revealing constant ratios of external to internal radii. This enables a comparison with molecular dynamics results, which also shed some light onto the applicability of Hertz theory in this context. Using this theory, we find a radial Young modulus strongly decreasing with increasing radius and reaching an asymptotic value of 30+/-10 GPa.

• Publication year

  2005

• Venue

  Physical Review Letters

• Publication date

  2005-05-06

• Fields of study

  Medicine, Materials Science, Physics, Engineering

• Identifiers
  DOI 10.1103/PhysRevLett.94.175502arXiv 1201.5501PMID 15904310
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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