Structural defects usually reduce the load carrying capacity of materials. Here, we show by molecular dynamics simulations an anomalous vacancy-defect-induced enhancement of interwall load transfer in annealed carbon nanotubes (CNTs). The large increase of load transfer mainly stems from the hybrid sp2-sp3 interwall bonds at the vacancy edges, which are stronger than the sp3 interwall bonds in pristine CNTs. This finding offers insights for better understanding and designing CNT-based high-performance nanocomposites.
REFERENCES
1.
2.
M.
Treacy
, T.
Ebbesen
, and J.
Gibson
, Nature
381
, 678
(1996
). 3.
M.
Yu
, O.
Lourie
, M.
Dyer
, K
Moloni
, T.
Kelly
, and R.
Ruoff
, Science
287
, 637
(2000
). 4.
J.
Cummings
and A.
Zettl
, Science
289
, 602
(2000
). 5.
Z. H.
Xia
, P. R.
Guduru
, and W. A.
Curtin
, Phys. Rev. Lett.
98
, 245501
(2007
). 6.
Y. Y.
Zhang
, C. M.
Wang
, and Y.
Xiang
, J. Appl. Phys.
109
, 083516
(2011
). 7.
E.
Byme
, M.
McCarthy
, Z.
Xia
, and W.
Curtin
, Phys. Rev. Lett.
103
, 045502
(2009
). 8.
B.
Peng
, M.
Locascio
, P.
Zapol
, S.
Li
, S.
Mielke
, G.
Schatz
, and H.
Espinosa
, Nat. Nanotechnol.
3
, 626
(2008
). 9.
M.
Estili
and A.
Kawasaki
, Adv. Mater.
22
, 107
(2010
). 10.
C.
Tang
, Y.
Zhang
, W. L.
Guo
, and C. F.
Chen
, J. Phys. Chem. C
114
, 18091
(2010
). 11.
H.
Dai
, E.
Wong
, and C.
Lieber
, Science
272
, 523
(1996
). 12.
C.
Tang
, W. L.
Guo
, and C. F.
Chen
, Phys. Rev. Lett.
100
, 175501
(2008
). 13.
K.
Suenaga
, H.
Wakabayashi
, M.
Koshino
, Y.
Sato
, K.
Urita
, and S.
Iijima
, Nat. Nanotechnol.
2
, 358
(2007
). 14.
A.
Cano-Marquez
, F. J.
Rodriguez-Macias
, J.
Campos-Delgado
, C.
Espinosa-Gonzalez
, F.
Tristan-Lopez
, D.
Ramirez-Gonzalez
, D.
Cullen
, D.
Smith
, M.
Terrones
, and Y.
Vega-Cantu
, Nano Lett.
9
, 1527
(2009
). 15.
C.
Jin
, K.
Suenaga
, and S.
Iijima
, Nano Lett.
8
, 1127
(2008
). 16.
D. W.
Brenner
, S. A.
Shenderova
, J. A.
Harisson
, S. J.
Stuart
, B.
Ni
, and S. B.
Sinnott
, J. Phys.: Condens. Matter
14
, 783
(2002
). 17.
X.
Duan
, C.
Tang
, J.
Zhang
, W.
Guo
, and Z.
Liu
, Nano Lett.
7
, 143
(2007
). 18.
A.
Barreiro
, R.
Rurali
, E.
Hernandez
, J.
Moser
, T.
Pichler
, L.
Forro
and A.
Bachtold
, Science
320
, 775
(2008
). 19.
C.
Tang
, W. L.
Guo
, and C. F.
Chen
, Phys. Rev. B
79
, 155436
(2009
). 20.
X.
Zhao
, Y.
Liu
, S.
Inouse
, T.
Suzuki
, R.
Jones
, and Y.
Ando
, Phys. Rev. Lett.
92
, 125502
(2005
). 21.
J. Y.
Huang
, S.
Chen
, Z. F.
Ren
, Z.
Wang
, K.
Kempa
, M. J.
Naughton
, G.
Chen
, and M. S.
Dresselhaus
, Phys. Rev. Lett.
98
, 185501
(2007
). © 2012 American Institute of Physics.
2012
American Institute of Physics
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