Journal
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Volume 248, Issue 1, Pages 82-87Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.201083984
Keywords
carbon nanotubes; heterojunctions; mechanical properties; Poisson's ratio
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The Poisson's ratio effect of single wall carbon nanotube heterojunctions (HJ) of the type (5,5)-(10,10) is investigated using an hybrid finite element atomistic-continuum approach to simulate the mechanical behaviour of nanostructures. The nanotube His provide a peculiar deformation pattern, with combined bending and axial stretching of carbon nanotubes (CNTs), and a broad agreement of their axial stiffness with spring series continuum mechanics and existing molecular dynamics (MD) simulations. A possible auxetic behaviour is observed for the pure HJ with no tubes when subjected to tensile loading. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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