 In this letter, both entanglement length and pore size of carbon nanotube (CNT) buckypaper are studied numerically and found to scale with a characteristic length (EI/γ)1/2, where EI and γ denote the bending stiffness and binding energy of a CNT, respectively. For (EI/γ)1/2<40 nm, the CNTs in buckypaper are interwound with a short entanglement length and a small pore size. However, when (EI/γ)1/2>40 nm, CNT ring/racket structures dominate the buckypaper, exhibiting longer entanglement length and larger pore size. The acquired understanding of microscopic structures allows us to propose that CNT buckypaper with different mechanical properties and pore size can be designed through the choice of (EI/γ)1/2 values.
for LaTeX users @article{YLi2012-100,
author = {Y. Li and M. Kr\"oger},
title = {Computational study on the entanglement length and pore size of carbon nanotube buckypaper},
journal = {Appl. Phys. Lett.},
volume = {100},
pages = {021907
[article also included in the Virtual J. Nanoscale Sci. Tech. 25:4},
year = {2012}
}
\bibitem{YLi2012-100} Y. Li, M. Kr\"oger,
Computational study on the entanglement length and pore size of carbon nanotube buckypaper,
Appl. Phys. Lett. {\bf 100} (2012) 021907
[article also included in the Virtual J. Nanoscale Sci. Tech. 25:4 (2012)].YLi2012-100
Y. Li, M. Kr\"oger
Computational study on the entanglement length and pore size of carbon nanotube buckypaper
Appl. Phys. Lett.,100,2012,021907
[article also included in the Virtual J. Nanoscale Sci. Tech. 25:4 (2012)] |
mk@mat.ethz.ch
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