基板上の金属粒子からの単層カーボンナノチューブ生成の分子動力学法シミュレーション(熱工学,内燃機関,動力など)

概要

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Nucleation process of single-walled carbon nanotubes (SWNTs) from a transition metal cluster on a substrate is studied by using a classical molecular dynamics (MD) simulation. For describing the effect of the substrate, averaged one-dimensional Lennard-Jones potential is employed between the metal cluster and the bottom boundary of the simulation cell. The parameters of the averaged one-dimensional Lennard-Jones potential describe the different degree of wettability. Nucleation process of nanotube caps from Ni_<108>, Ni_<256> and Ni_<500> clusters on a substrate are compared. Moreover, wettability of the Ni cluster and the Ni-Carbide cluster is compared by MD simulation of annealing process on a substrate. Finally, results are compared with the nucleation process of SWNT from a non-supported cluster for discussing of the role of the substrate at a nucleation stage of SWNT.
社団法人日本機械学会の論文
2006-10-25