頁籤選單縮合
| 題 名 | Superheating of Ag Nanowires Studied by Molecular Dynamics Simulations |
|---|---|
| 作 者 | Shi, D. W.; He, L. M.; Kong, L. G.; Lin, H.; Hong, L.; | 書刊名 | Chinese Journal of Physics |
| 卷 期 | 47:4 2009.08[民98.08] |
| 頁 次 | 頁502-510 |
| 分類號 | 333 |
| 關鍵詞 | |
| 語 文 | 英文(English) |
| 英文摘要 | In this work, the superheating of Ag nanowires was studied by molecular dynamics (MD) simulations at the atomic level. The simulation results showed a superheating of about 193 K for Ag nanowires coated by Ni. This is because of the suppression on the melt nucleation and growth due to the epitaxial Ag/Ni interface. These computer experiments reveal a possibility to elevate the instability temperature against melting for nanowires of increasing microelectronic technological interest. Also, a thermodynamic model was constructed to describe the superheating mechanism of the Ag nanowires by considering the Ag/Ni interface free energy. It was found that the nucleation and growth of the melt phase are both suppressed by the low energy Ag/Ni interfaces in Ni-coated Ag wires. The suppression of melt growth is crucial and plays a major role in the process of melting. The thermodynamic analysis gives a quantitative relation of superheati |
本系統中英文摘要資訊取自各篇刊載內容。