Behaviour of a screw dislocation inside a nanotube was considered in the context of surface elasticity. The elastic fields as well as the image force acting over the dislocation were derived and analyzed in detail. In contrast with the result of classical elasticity, the screw dislocation was shown to be repelled by free surfaces and occupy two stable equilibrium positions near them. The image force strongly depended upon the nanotube's inner and outer radii as well as surface elastic characteristics.

Effect of Surface Stresses on Elastic Behavior of a Screw Dislocation inside the Wall of a Nanotube. H.M.Shodja, M.Y.Gutkin, S.S.Moeini-Ardakani: Physica Status Solidi B, 2011, 248[6], 1437–41