Heat-induced transformation of nanodiamond into a tube-shaped fullerene: a molecular dynamics simulation.
Heat-induced structural transformation in nanodiamond of diameter approximately 1.4 nm is investigated by tight-binding molecular dynamics simulations using the environment-dependent tight-binding carbon potential. The nanodiamond is found to transform into a tube-shaped fullerene via annealing. Three interesting mechanisms for promoting inner carbon atoms of the nanodiamond into the surface carbon atoms of the tubular structure are observed. The "flow-out" mechanism prevails at temperatures lower than 2500 K and the "direct adsorption" and "push-out" mechanisms are observed at higher temperatures.
Lee
Gun-Do
GD
School of Materials Science and Engineering and Inter-university Semiconductor Research Center (ISRC), Seoul National University, Seoul 151-742, Korea.
Wang
C Z
CZ
Yu
Jaejun
J
Yoon
Euijoon
E
Ho
K M
KM