Amorphization and Directional Crystallization of Metals Confined in Carbon Nanotubes Investigated by in Situ Transmission Electron Microscopy

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	Amorphization and Directional Crystallization of Metals Confined in Carbon Nanotubes Investigated by in Situ Transmission Electron Microscopy
	Tang, Dai-Ming; Ren, Cui-Lan; Lv, Ruitao; Yu, Wan-Jing; Hou, Peng-Xiang; Wang, Ming-Sheng; Wei, Xianlong; Xu, Zhi; Kawamoto, Naoyuki; Bando, Yoshio; Mitome, Masanori; Liu, Chang; Cheng, Hui-Ming; Golberg, Dmitri; TANG.Daiming@nims.go.jp; cliu@imr.ac.cn; GOLBERG.Dmitri@nims.go.jp
	2015
发表期刊	NANO LETTERS
ISSN	1530-6984
卷号	15 期号:8 页码:4922-4927
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.
部门归属	[tang, dai-ming] natl inst mat sci, int ctr young scientists, tsukuba, ibaraki 3050044, japan ; [tang, dai-ming ; wang, ming-sheng ; wei, xianlong ; xu, zhi ; kawamoto, naoyuki ; bando, yoshio ; mitome, masanori ; golberg, dmitri] natl inst mat sci, world premier int ctr mat nanoarchitecton, tsukuba, ibaraki 3050044, japan ; [ren, cui-lan ; yu, wan-jing ; hou, peng-xiang ; liu, chang ; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [ren, cui-lan] chinese acad sci, shanghai inst appl phys, div nucl mat sci & engn, shanghai 201800, peoples r china ; [ren, cui-lan] chinese acad sci, shanghai inst appl phys, key lab interfacial phys & technol, shanghai 201800, peoples r china ; [lv, ruitao] tsinghua univ, dept mat sci & engn, lab adv mat, beijing 100084, peoples r china
关键词	In Situ Electron Microscopy Molecular Dynamics Simulations Carbon Nanotubes Phase Transition Amorphization
资助者	JSPS Kakenhi [25820336]; International Center for Young Scientists (ICYS), World Premier International (WPI) Center for Materials Nanoarchitectonics (MANA) of the National Institute for Materials Science (NIMS), Tsukuba, Japan; Ministry of Science and Technology of China [2011CB932601]; National Natural Science Foundation of China [51221264, 51272257, 51102242]; Chinese Academy of Sciences [KGZD-EW-T06]; Shenyang Supercomputing Center, Chinese Academy of Sciences
收录类别	sci
语种	英语
WOS记录号	WOS:000359613700012
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74620
专题	中国科学院金属研究所
通讯作者	TANG.Daiming@nims.go.jp; cliu@imr.ac.cn; GOLBERG.Dmitri@nims.go.jp
推荐引用方式 GB/T 7714	Tang, Dai-Ming,Ren, Cui-Lan,Lv, Ruitao,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, Dai-Ming.,Ren, Cui-Lan.,Lv, Ruitao.,Yu, Wan-Jing.,Hou, Peng-Xiang.,...&GOLBERG.Dmitri@nims.go.jp.(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, Dai-Ming,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.