On the accuracy of maximum entropy reconstruction of high-resolution Z-contrast STEM images

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	On the accuracy of maximum entropy reconstruction of high-resolution Z-contrast STEM images
	X. H. Sang; K. Du; M. J. Zhuo; H. Q. Ye
	2009
发表期刊	Micron
ISSN	0968-4328
卷号	40 期号:2 页码:247-254
摘要	The accuracy of maximum entropy reconstruction of Z-contrast STEM images has been evaluated with the effects of experimental variables and noise taken into account by the means of image simulation. As the specimen contains atom species of greatly different atomic numbers, special attention is given to the reliability of the position and composition of lighter atoms that are determined from Z-contrast images in the presence of heavier atoms. When the noise is moderate (SNR > 2.5), the position of atom columns can be measured within an accuracy of 0.03 nm. With a higher signal-to-noise ratio (SNR > 5) the composition of lighter atoms can be resolved reliably from the Z-contrast images. However, when image noise increases, the relative intensity of lighter atoms may deviate from the actual value in the specimen object function. (c) 2008 Elsevier Ltd. All rights reserved.
部门归属	[sang, xiahan; du, kui; zhuo, mujin; ye, hengqiang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [sang, xiahan; zhuo, mujin] chinese acad sci, grad sch, beijing 100049, peoples r china.;du, k (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;kuidu@imr.ac.cn
关键词	Scanning Transmission Electron Microscopy High-angle Annular Dark-field Image (Haadf) Image Processing Quantitative Electron Microscopy Transmission Electron-microscopy Dark-field Images Grain-boundaries Adf Stem Chemistry Silicon
URL	查看原文
WOS记录号	WOS:000262072000011
引用统计	被引频次：2[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/321006/32259
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. H. Sang,K. Du,M. J. Zhuo,et al. On the accuracy of maximum entropy reconstruction of high-resolution Z-contrast STEM images[J]. Micron,2009,40(2):247-254.
APA	X. H. Sang,K. Du,M. J. Zhuo,&H. Q. Ye.(2009).On the accuracy of maximum entropy reconstruction of high-resolution Z-contrast STEM images.Micron,40(2),247-254.
MLA	X. H. Sang,et al."On the accuracy of maximum entropy reconstruction of high-resolution Z-contrast STEM images".Micron 40.2(2009):247-254.