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Effect of surface stresses on elastic behavior of a screw dislocation inside the wall of a nanotube
Author(s) -
Shodja Hossein M.,
Gutkin Mikhail Yu.,
MoeiniArdakani Seyed S.
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201046417
Subject(s) - dislocation , elasticity (physics) , materials science , surface (topology) , nanotube , context (archaeology) , condensed matter physics , composite material , mechanics , classical mechanics , geometry , physics , mathematics , carbon nanotube , geology , paleontology
Behavior of a screw dislocation inside a nanotube (NT) is considered in the context of surface elasticity. The elastic fields as well as the image force acting over the dislocation are derived and analyzed in detail. In contrast with the result of classical elasticity, the screw dislocation is shown to be repelled by free surfaces and occupy two stable equilibrium positions near them. The image force strongly depends on the NT's inner and outer radii as well as surface elastic characteristics.