Sub-0.1 nm-resolution quantitative scanning transmission electron microscopy without adjustable parameters

Sub-0.1 nm-resolution quantitative scanning transmission electron microscopy without adjustable parameters
复制标题

亚 0.1 nm 分辨率定量扫描透射电子显微镜,无需可调参数

DOI:
10.1063/1.4711766
复制
发表时间:
2012
影响因子:
4
通讯作者:
J. Etheridge
J. Etheridge
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
C. Dwyer;C. Maunders;C. Zheng;M. Weyland;P. Tiemeijer;J. Etheridge

文献摘要

参考文献

被引文献

相似文献

扫描透射电子显微镜(STEM)中的原子分辨率成像构成了纳米结构表征的强大工具。在这里,我们展示了原子分辨率高角度环形暗场(ADF)STEM图像的定量解释使用的方法,不依赖于可调参数。我们独立测量的仪器参数,影响子0.1 nm分辨率的ADF图像,量化他们的个人和集体的图像强度的贡献,并表明,这些参数的知识,使所有可访问的空间频率的绝对强度和对比度的定量解释。该分析也为现场测量STEM的有效源分布提供了一种方法。
Atomic-resolution imaging in the scanning transmission electron microscope (STEM) constitutes a powerful tool for nanostructure characterization. Here, we demonstrate the quantitative interpretation of atomic-resolution high-angle annular dark-field (ADF) STEM images using an approach that does not rely on adjustable parameters. We measure independently the instrumental parameters that affect sub-0.1 nm-resolution ADF images, quantify their individual and collective contributions to the image intensity, and show that knowledge of these parameters enables a quantitative interpretation of the absolute intensity and contrast across all accessible spatial frequencies. The analysis also provides a method for the in-situ measurement of the STEM’s effective source distribution.
DOI: 10.1103/physrevlett.99.086102
发表时间: 2007-08-24
影响因子: 8.6
作者:
Bosman, M.;Keast, V. J.;Allen, L. J.
通讯作者: Allen, L. J.