Breaking Modes of Nanowires

At temperatures close to the Tm, of the siuface, the maximum strain and the extensibility of the surface layer approach infinity, whereas the strain limit of the 

If one deforms the entire nanowire by an amount t of xd, the strain of the bonds in the respective shells will be s, = x/C,. Because Ci C2 C3, the actual applied strains are in this order, 3 2 1, which indicates that the skin bond breaks hrst at low T. Therefore, the breaking mode of a nanowire at low T is expected to be opposite to that at higher T. At very low T, the surface bond breaks before the bulk ones, while at T T i or higher, the skin bond breaks after the ones in the core interior. 

Predictions of the wall thickness dependence of the T suppression and Y enhancement of the nanobeams agree well with the insofar-observed trends documented. Bond unfolding, atomic gliding dislocations, and creep and kink formation dominate the superplasticity of nanograined crystals or the SWCNTS in 

Dalton, S. Collins, E. Munoz, J.M. Razal, V.H. Ebron, J.P. Ferraris, J.N. Coleman, B.G. Kim, R.H. Baughman, Super-tough carbon-nanotube fibres—these extraordinary composite fibres can be woven into electronic textiles. Nature 423(6941), 703 (2003) 

How long can single-walled carbon nanotube ropes last under static or dynamic fatigue Appl. Phys. Lett. 92(8), 083105 (2008) 

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