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Tensile Tests on Individual Single‐Walled Carbon Nanotubes: Linking Nanotube Strength with Its Defects
Author(s) -
Wang MingSheng,
Golberg Dmitri,
Bando Yoshio
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201001463
Subject(s) - carbon nanotube , materials science , ultimate tensile strength , pentagon , tensile strain , nanotechnology , composite material , resolution (logic) , carbon fibers , composite number , computer science , geometry , mathematics , artificial intelligence
The ultimate tensile strength of individual single‐walled carbon nanotubes (CNTs) is measured in a high‐resolution TEM equipped with a conducting AFM unit. The values are correlated to every tube’s structural details. The strength of ∼100 GPa, approaching the theoretical limit for defect‐free CNTs, is documented in tubes without visible defects; for those with spatially separated stepwise pentagon‐heptagon defects, determining the breaking sites, it reduces to 40–70 GPa.