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In situ study on atomic mechanism of melting and freezing of single bismuth nanoparticles
Li, YX (Li, Yingxuan); Zang, L (Zang, Ling); Jacobs, DL (Jacobs, Daniel L.); Zhao, J (Zhao, Jie); Yue, X (Yue, Xiu); Wang, CY (Wang, Chuanyi); Li, YX
2017
发表期刊NATURE COMMUNICATIONS
卷号8期号:2页码:14462-14462
摘要Experimental study of the atomic mechanism in melting and freezing processes remains a formidable challenge. We report herein on a unique material system that allows for in situ growth of bismuth nanoparticles from the precursor compound SrBi2Ta2O9 under an electron beam within a high-resolution transmission electron microscope (HRTEM). Simultaneously, the melting and freezing processes within the nanoparticles are triggered and imaged in real time by the HRTEM. The images show atomic-scale evidence for point defect induced melting, and a freezing mechanism mediated by crystallization of an intermediate ordered liquid. During the melting and freezing, the formation of nucleation precursors, nucleation and growth, and the relaxation of the system, are directly observed. Based on these observations, an interaction-relaxation model is developed towards understanding the microscopic mechanism of the phase transitions, highlighting the importance of cooperative multiscale processes.
DOI10.1038/ncomms14462
收录类别SCI
WOS记录号WOS:000393812200001
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被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4729
专题环境科学与技术研究室
通讯作者Li, YX
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
3.Univ Utah, Nano Inst Utah, Salt Lake City, UT 84112 USA
4.Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
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Li, YX ,Zang, L ,Jacobs, DL ,et al. In situ study on atomic mechanism of melting and freezing of single bismuth nanoparticles[J]. NATURE COMMUNICATIONS,2017,8(2):14462-14462.
APA Li, YX .,Zang, L .,Jacobs, DL .,Zhao, J .,Yue, X .,...&Li, YX.(2017).In situ study on atomic mechanism of melting and freezing of single bismuth nanoparticles.NATURE COMMUNICATIONS,8(2),14462-14462.
MLA Li, YX ,et al."In situ study on atomic mechanism of melting and freezing of single bismuth nanoparticles".NATURE COMMUNICATIONS 8.2(2017):14462-14462.
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