Amorphization and Directional Crystallization of Metals Confined in Carbon Nanotubes Investigated by in Situ Transmission Electron Microscopy
文献类型：期刊论文
| 作者 | Tang, DM; Ren, CL; Lv, RT; Yu, WJ; Hou, PX; Wang, MS; Wei, XL; Xu, Z; Kawamoto, N; Bando, Y |
| 刊名 | NANO LETTERS
 |
| 出版日期 | 2015 |
| 卷号 | 15期号:8页码:4922—4927 |
| 关键词 | SUB-MICRON SPHERES ORDER SOLIDIFICATION GLASSES LIQUID NICKEL |
| ISSN号 | 1530-6984 |
| 通讯作者 | Tang, DM (reprint author), Natl Inst Mat Sci, Int Ctr Young Scientists, Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan. |
| 英文摘要 | The hollow core of a carbon nanotube (CNT) provides a unique opportunity to explore the physics, chemistry, biology, and metallurgy of different materials confined in such nanospace. Here, we investigate the nonequilibrium metallurgical processes taking place inside CNTs by in situ transmission electron microscopy using CNTs as nanoscale resistively heated crucibles having encapsulated metal nanowires/crystals in their channels. Because of nanometer size of the system and intimate contact between the CNTs and confined metals, an efficient heat transfer and high cooling rates (similar to 10(13) K/s) were achieved as a result of a flash bias pulse followed by system natural quenching, leading to the formation of disordered amorphous-like structures in iron, cobalt, and gold. An intermediate state between crystalline and amorphous phases was discovered, revealing a memory effect of local short-to-medium range order during these phase transitions. Furthermore, subsequent directional crystallization of an amorphous iron nano wire formed by this method was realized under controlled Joule heating. High-density crystalline defects were generated during crystallization due to a confinement effect from the CNT and severe plastic deformation involved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000359613700012 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24861]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Tang, DM,Ren, CL,Lv, RT,et al. Amorphization and Directional Crystallization of Metals Confined in Carbon Nanotubes Investigated by in Situ Transmission Electron Microscopy[J]. NANO LETTERS,2015,15(8):4922—4927. |
| APA | Tang, DM.,Ren, CL.,Lv, RT.,Yu, WJ.,Hou, PX.,...&Golberg, D.(2015).Amorphization and Directional Crystallization of Metals Confined in Carbon Nanotubes Investigated by in Situ Transmission Electron Microscopy.NANO LETTERS,15(8),4922—4927. |
| MLA | Tang, DM,et al."Amorphization and Directional Crystallization of Metals Confined in Carbon Nanotubes Investigated by in Situ Transmission Electron Microscopy".NANO LETTERS 15.8(2015):4922—4927. |
入库方式： OAI收割
来源：上海应用物理研究所
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