Droplet Epitaxy Image Contrast in Mirror Electron Microscopy.
Droplet Epitaxy Image Contrast in Mirror Electron Microscopy.
复制标题
镜像电子显微镜中的液滴外延图像对比。
DOI：
10.1186/s11671-017-1837-y
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发表时间：
2017-12
影响因子：
--
通讯作者：
Jesson DE
中科院分区：
文献类型：
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作者：
Kennedy SM;Zheng CX;Jesson DE
用图像模拟的方法解释了从一部GaAs液滴外延电影中获得的镜面电子显微镜图像。模拟中假定液滴外延生长的结构具有圆柱对称性，再现了实验MEM图像对比度的主要特征，表明液滴外延是可以实时研究的。因此，证实了在液滴接触线上形成了内环，在液滴外围形成了外环(或裙子)。我们相信，MEM与图像模拟相结合将越来越多地用于研究量子结构的形成和生长。
Image simulation methods are applied to interpret mirror electron microscopy (MEM) images obtained from a movie of GaAs droplet epitaxy. Cylindrical symmetry of structures grown by droplet epitaxy is assumed in the simulations which reproduce the main features of the experimental MEM image contrast, demonstrating that droplet epitaxy can be studied in real-time. It is therefore confirmed that an inner ring forms at the droplet contact line and an outer ring (or skirt) occurs outside the droplet periphery. We believe that MEM combined with image simulations will be increasingly used to study the formation and growth of quantum structures.