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rdf:type
lifeskim:mentions
pubmed:issue
17
pubmed:dateCreated
2005-5-20
pubmed:abstractText
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.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
May
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
6
pubmed:volume
94
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
175502
pubmed:year
2005
pubmed:articleTitle
Radial elasticity of multiwalled carbon nanotubes.
pubmed:affiliation
School of Physics, Georgia Institute of Technology, 837 State Street, Atlanta, Georgia 30332, USA.
pubmed:publicationType
Journal Article