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Ultrahigh Strength and Stiffness in Cross‐Linked Hierarchical Carbon Nanotube Bundles
Author(s) -
Filleter T.,
Bernal R.,
Li S.,
Espinosa H.D.
Publication year - 2011
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.201100547
Subject(s) - materials science , carbon nanotube , stiffness , transmission electron microscopy , ultimate tensile strength , composite material , nanotube , covalent bond , tensile testing , nanotechnology , physics , quantum mechanics
Electron irradiation induced covalent cross‐linking at multiple length scales within double‐walled nanotube bundles is demonstrated to lead to ultrahigh effective strength and stiffness. In situ transmission electron microscopy tensile testing reveals both order of magnitude enhancements in the mechanical properties as well as distinct failure mechanisms of cross‐linked versus un‐crosslinked bundles.