TY - JOUR
T1 - Prediction of pull-out force of multi-walled carbon nanotube (MWCNT) in sword-in-sheath mode
AU - Yamamoto, Go
AU - Liu, Sen
AU - Hu, Ning
AU - Hashida, Toshiyuki
AU - Liu, Yaolu
AU - Yan, Cheng
AU - Li, Yuan
AU - Cui, Hao
AU - Ning, Huiming
AU - Wu, Liangke
N1 - Funding Information:
This work is partly supported by two Grand-in-Aids for Scientific Research (Nos. 19360045 and 22360044) from the Japanese Ministry of Education, Culture, Sports, Science and Technology. The authors acknowledge Prof. R.S. Ruoff (The University of Texas at Austin, USA) for providing experimental utilities and Prof. C.B. Fan (Beijing Institute of Technology, China) for kindly providing the computational resources.
PY - 2012/7
Y1 - 2012/7
N2 - The pull-out force of some outer walls against other inner walls in multi-walled carbon nanotubes (MWCNTs) was systematically studied by molecular mechanics simulations. The obtained results reveal that the pull-out force is proportional to the square of the diameter of the immediate outer wall on the sliding interface, which highlights the primary contribution of the capped section of MWCNT to the pull-out force. A simple empirical formula was proposed based on the numerical results to predict the pull-out force for an arbitrary pull-out in a given MWCNT directly from the diameter of the immediate outer wall on the sliding interface. Moreover, tensile tests for MWCNTs with and without acid-treatment were performed with a nanomanipulator inside a vacuum chamber of a scanning electron microscope (SEM) to validate the present empirical formula. It was found that the theoretical pull-out forces agree with the present and some previous experimental results very well.
AB - The pull-out force of some outer walls against other inner walls in multi-walled carbon nanotubes (MWCNTs) was systematically studied by molecular mechanics simulations. The obtained results reveal that the pull-out force is proportional to the square of the diameter of the immediate outer wall on the sliding interface, which highlights the primary contribution of the capped section of MWCNT to the pull-out force. A simple empirical formula was proposed based on the numerical results to predict the pull-out force for an arbitrary pull-out in a given MWCNT directly from the diameter of the immediate outer wall on the sliding interface. Moreover, tensile tests for MWCNTs with and without acid-treatment were performed with a nanomanipulator inside a vacuum chamber of a scanning electron microscope (SEM) to validate the present empirical formula. It was found that the theoretical pull-out forces agree with the present and some previous experimental results very well.
KW - Capped section
KW - Molecular mechanics simulations
KW - Multi-walled carbon nanotubes
KW - Pull-out force
KW - Sword-in-sheath mode
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U2 - 10.1016/j.commatsci.2012.03.016
DO - 10.1016/j.commatsci.2012.03.016
M3 - Article
AN - SCOPUS:84860533995
SN - 0927-0256
VL - 60
SP - 7
EP - 12
JO - Computational Materials Science
JF - Computational Materials Science
ER -