Statistical Study of Beam-Induced Motion of Gold Adatoms by a Scanning TEM
Statistical Study of Beam-Induced Motion of Gold Adatoms by a Scanning TEM
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金吸附原子束流诱导运动的扫描 TEM 统计研究
DOI：
10.1017/s1431927615000574
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发表时间：
2015-06-01
影响因子：
2.8
通讯作者：
Zhu, Guo-zhen
中科院分区：
文献类型：
--
作者：
Zhou, Wei;Li, Xin;Zhu, Guo-zhen
摘要为了实现可靠的结构表征，透射电子显微镜，束诱导的结构变化应澄清任何目标材料系统。例如，在电子束作用下，重吸附原子在薄碳载体上的运动已被反复报道，而这种运动的根本原因仍在争论中。通过对金吸附原子的群行为进行统计分析，在典型的扫描透射电子显微镜观察条件下，研究了它们在不同束流条件下的运动，并检测了对应于束流诱导运动的特征。我们的结果与Egerton（2013）提出的理论预测一致。
Abstract In order to achieve reliable structural characterization by transmission electron microscopy, beam-induced structural changes should be clarified for any target material system. As an example, the movement of heavy adatoms on a thin carbon support has been repeatedly reported under the electron beam while the underlying reason for such motion is still in debate. By applying statistical analysis to the group behavior of gold adatoms, we investigated their motion under different beam conditions and detected features corresponding to beam-induced motion, under typical scanning transmission electron microscopy observation conditions. Our results are consistent with the theoretical prediction proposed by Egerton (2013).