Influence of anisotropic elasticity on the mechanical properties of fivefold twinned nanowires

In this paper in the Journal of the Mechanics and Physics of Solids (vol. 84, p. 358, 

http://authors.elsevier.com/a/1Rk5057Zjdx-o ) we propose a
new theory for the mechanical properties of fivefold twinned nanowires.

We show that the Frank vector of the central wedge disclination depends on the uniaxial strain,

and reveal the  influence of the fivefold twinned structure on Young's modulus.
The theory explains the material-dependent deformation behavior in atomistic simulations. 
We furthermore address the size-dependence of the elastic properties of nanowires.