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Nanohinge‐Induced Plasticity of Helical Carbon Nanotubes
Author(s) -
Wu Jianyang,
Nagao Shijo,
He Jianying,
Zhang Zhiliang
Publication year - 2013
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201202830
Subject(s) - plasticity , materials science , toughness , carbon nanotube , elasticity (physics) , composite material , hexagonal crystal system , spring (device) , chemical physics , nanotechnology , crystallography , thermodynamics , chemistry , physics
Helical carbon nanotubes with intentionally incorporated non‐hexagonal defects have unexpectedly high toughness and plasticity, in addition to the well‐recognized extreme elasticity. The obtained toughness approaches 5000 J g −1 with decreasing spring radius. The high toughness originates from the plastic nanohinge formation as a result of distributed partial fractures. A strong spring size effect, contradictory to the continuum solution, is precisely described by an atomistic bond‐breaking model.