Study on the dispersion of charged single-wall carbon nanotube bundles by first principles calculation.
We have investigated the dispersion of charged single-wall carbon nanotube bundles by using density functional theory. We obtained the variation of equilibrium spacing between tubes as a function of charge density for the (4, 4) and (7, 0) tubes with different charge signs and the minimum charge density to cause separation. We also calculated the cohesive energies between two charged tubes as a function of interwall spacing and found that extra energy supply can promote separation of nanotube bundle. Our results are in good agreement with the experimental values.
Liu
Wenshuo
W
State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University Beijing 100871, PR China.
Luo
Guangfu
G
Li
Hong
H
Wang
Lu
L
Lu
Jing
J
Zhou
Jing
J
Qin
Rui
R
Gao
Zhengxiang
Z
Lai
Lin
L