TY - JOUR
T1 - Radial elasticity of multiwalled carbon nanotubes
AU - Palaci, I.
AU - Fedrigo, S.
AU - Brune, H.
AU - Klinke, C.
AU - Chen, M.
AU - Riedo, E.
PY - 2005/5/6
Y1 - 2005/5/6
N2 - 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±10GPa.
AB - 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±10GPa.
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U2 - 10.1103/PhysRevLett.94.175502
DO - 10.1103/PhysRevLett.94.175502
M3 - Article
AN - SCOPUS:27144519116
VL - 94
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 17
M1 - 175502
ER -