Stone-Wales transformations triggered by intrinsic localized modes in carbon nanotubes
スポンサーリンク
概要
- 論文の詳細を見る
The crucial role of intrinsic localized modes (ILMs) in the atomic scale as a trigger of defect nucleation was studied using molecular-dynamics simulations for a (5,5) armchair carbon nanotube (CNT) under axial tension. A localized vibration at a pair of neighboring atoms was found to be the ILM, which simultaneously produces an intense concentration of kinetic energy, even in the structurally homogeneous CNT. The excited ILM was gradually amplified by the nonlinearity of C-C interaction. The amplified ILM, then, drove the breaking of the on-site C-C bond, which leads to the Stone-Wales transformation producing a topological defect consisting of two pentagons and two heptagons coupled in pairs. This signifies that mechanical instability can be activated by the ILMs. Such mechanism is expected to apply to other mechanical instabilities, e.g., as an origin of phase transformations in silicon under hydrostatic pressure.
論文 | ランダム
- 小豆島でクロツバメシジミを採集
- The study of drug binding protein in rat whole embryo culture : Abstracts of Papers Presented at the 29th Annual Meeting of the Japanese Teratology Society, Yamagata, Japan July 13 - 14
- The measurement of PO_2 in medium of rat whole embryo culture or amniotic fluid of exoutero : Abstracts of Papers Presented at the 29th Annual Meeting of the Japanese Teratology Society, Yamagata, Japan July 13 - 14
- 11053 インターネットを用いた木造住宅耐震診断システムの開発に関する基礎的研究(空間情報ほか,情報システム技術)
- 焼入れ急冷時の熱伝達