TY - JOUR
T1 - Efficient defect healing in catalytic carbon nanotube growth
AU - Yuan, Qinghong
AU - Xu, Zhiping
AU - Yakobson, Boris I.
AU - Ding, Feng
PY - 2012/6/15
Y1 - 2012/6/15
N2 - The energetics of topological defects (TDs) in carbon nanotubes (CNTs) and their kinetic healing during the catalytic growth are explored theoretically. Our study indicates that, with the assistance of a metal catalyst, TDs formed during the addition of C atoms can be efficiently healed at the CNT-catalyst interface. Theoretically, a TD-free CNT wall with 108-1011 carbon atoms is achievable, and, as a consequence, the growth of perfect CNTs up to 0.1-100 cm long is possible since the linear density of a CNT is ∼100 carbon atoms per nanometer. In addition, the calculation shows that, among catalysts most often used, Fe has the highest efficiency for defect healing.
AB - The energetics of topological defects (TDs) in carbon nanotubes (CNTs) and their kinetic healing during the catalytic growth are explored theoretically. Our study indicates that, with the assistance of a metal catalyst, TDs formed during the addition of C atoms can be efficiently healed at the CNT-catalyst interface. Theoretically, a TD-free CNT wall with 108-1011 carbon atoms is achievable, and, as a consequence, the growth of perfect CNTs up to 0.1-100 cm long is possible since the linear density of a CNT is ∼100 carbon atoms per nanometer. In addition, the calculation shows that, among catalysts most often used, Fe has the highest efficiency for defect healing.
UR - https://www.scopus.com/pages/publications/84862579202
U2 - 10.1103/PhysRevLett.108.245505
DO - 10.1103/PhysRevLett.108.245505
M3 - 文章
AN - SCOPUS:84862579202
SN - 0031-9007
VL - 108
JO - Physical Review Letters
JF - Physical Review Letters
IS - 24
M1 - 245505
ER -