Large variations in the onset of rippling in concentric nanotubes.
2014 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 104, 021910Article in journal (Refereed) Published
We present a detailed experimental study of the onset of rippling in highly crystalline carbon nanotubes. Modeling has shown that there should be a material constant, called the critical length, describing the dependence of the critical strain on the nanotube outer radius. Surprisingly, we have found very large variations, by a factor of three, in the critical length. We attribute this to a supporting effect from the inner walls in multiwalled concentric nanotubes. We provide an analytical expression for the maximum deflection prior to rippling, which is an important design consideration in nanoelectromechanical systems utilizing nanotubes.
Place, publisher, year, edition, pages
2014. Vol. 104, 021910
nanotubes, rippling, mechanical stiffness, TEM, AFM
Condensed Matter Physics
Research subject Physics
IdentifiersURN: urn:nbn:se:kau:diva-30942DOI: 10.1063/1.4861605ISI: 000330431000038OAI: oai:DiVA.org:kau-30942DiVA: diva2:689181
FunderSwedish Research Council, 2010-4324