Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.035501
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Funding
- NSF [CMMI-0747684]
- University of Minnesota
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0747684] Funding Source: National Science Foundation
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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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