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
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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
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发表时间:
2012
影响因子:
4
通讯作者:
J. Etheridge
中科院分区:
文献类型:
--
作者:
C. Dwyer;C. Maunders;C. Zheng;M. Weyland;P. Tiemeijer;J. Etheridge
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.
影响因子:
8.6
作者:
Bosman, M.;Keast, V. J.;Allen, L. J.
通讯作者:
Allen, L. J.