The Development and Applications of Ultrafast Electron Nanocrystallography
The Development and Applications of Ultrafast Electron Nanocrystallography
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DOI：
10.1017/s1431927609090709
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发表时间：
2009-07
影响因子：
2.8
通讯作者：
Chong-Yu Ruan;Y. Murooka;R. Raman;R. Murdick;R. Worhatch;A. Pell
中科院分区：
文献类型：
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作者：
Chong-Yu Ruan;Y. Murooka;R. Raman;R. Murdick;R. Worhatch;A. Pell
摘要回顾了超快电子纳米晶学作为研究纳米材料和界面结构动力学的一种方法的发展。它的灵敏度和分辨率在金纳米晶体的表面熔化、石墨向可逆类金刚石中间体的非平衡转变和分子尺度电荷动力学的研究中表现出来，不仅在确定结构方面具有多功能性，而且在界面上的电荷和能量重新分布方面也显示出多功能性。展示了一种原子结构三维重建的定量方案，具有极少的粒子(<；1,000)灵敏度，将这种纳米结晶学方法建立为以原子尺度时空分辨率直接可视化孤立纳米材料内动力学的工具。
Abstract We review the development of ultrafast electron nanocrystallography as a method for investigating structural dynamics for nanoscale materials and interfaces. Its sensitivity and resolution are demonstrated in the studies of surface melting of gold nanocrystals, nonequilibrium transformation of graphite into reversible diamond-like intermediates, and molecular scale charge dynamics, showing a versatility for not only determining the structures, but also the charge and energy redistribution at interfaces. A quantitative scheme for 3D retrieval of atomic structures is demonstrated with few-particle (<1,000) sensitivity, establishing this nanocrystallographic method as a tool for directly visualizing dynamics within isolated nanomaterials with atomic scale spatio-temporal resolution.