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Amorphization and Directional Crystallization of Metals Confined in Carbon Nanotubes Investigated by in Situ Transmission Electron Microscopy
Tang, DM; Ren, CL; Lv, RT; Yu, WJ; Hou, PX; Wang, MS; Wei, XL; Xu, Z; Kawamoto, N; Bando, Y; Mitome, M; Liu, C; Cheng, HM; Golberg, D; Tang, DM (reprint author), Natl Inst Mat Sci, Int Ctr Young Scientists, Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan.
2015
Source PublicationNANO LETTERS
ISSN1530-6984
Volume15Issue:8Pages:4922—4927
Subtype期刊文献
AbstractThe 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.
KeywordSub-micron Spheres Order Solidification Glasses Liquid Nickel
Indexed BySCI
Language英语
WOS IDWOS:000359613700012
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24861
Collection中科院上海应用物理研究所2011-2019年
Corresponding AuthorTang, DM (reprint author), Natl Inst Mat Sci, Int Ctr Young Scientists, Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan.
Recommended Citation
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.,...&Tang, DM .(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.
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