TY - JOUR
T1 - Eshelby twist and magic helical zinc oxide nanowires and nanotubes
AU - Akatyeva, E.
AU - Dumitric, T.
PY - 2012/7/16
Y1 - 2012/7/16
N2 - Twisted zinc oxide nanowires and nanotubes were recently synthesized by screw-dislocation growth. We show theoretically that once their diameter increases above a critical size of the order of a few atomic spacings, the existence of these structures can be rationalized in terms of the energetics of surfaces and veritable Eshelby's twist linear elasticity mechanics supplemented by a nonlinear core term. For Burgers vector larger than the minimum allowed one, a twisted nanotube with well-defined thickness, rather than a nanowire, is the most stable nanostructure. Results are assistive for designing ultrathin nanostructures made out of nonlayered materials.
AB - Twisted zinc oxide nanowires and nanotubes were recently synthesized by screw-dislocation growth. We show theoretically that once their diameter increases above a critical size of the order of a few atomic spacings, the existence of these structures can be rationalized in terms of the energetics of surfaces and veritable Eshelby's twist linear elasticity mechanics supplemented by a nonlinear core term. For Burgers vector larger than the minimum allowed one, a twisted nanotube with well-defined thickness, rather than a nanowire, is the most stable nanostructure. Results are assistive for designing ultrathin nanostructures made out of nonlayered materials.
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U2 - 10.1103/PhysRevLett.109.035501
DO - 10.1103/PhysRevLett.109.035501
M3 - Article
AN - SCOPUS:84863917145
SN - 0031-9007
VL - 109
JO - Physical review letters
JF - Physical review letters
IS - 3
M1 - 035501
ER -