Study of Point Spread in the Aberration-Corrected Transmission Electron Microscopy
Study of Point Spread in the Aberration-Corrected Transmission Electron Microscopy
复制标题
像差校正透射电子显微镜中点扩散的研究
DOI:
10.1017/s1431927614012823
复制
发表时间:
2012-09
影响因子:
2.8
通讯作者:
Yao, Yuan
中科院分区:
文献类型:
--
作者:
Ge, Binghui;Wang, Yumei;Chang, Yunjie;Yao, Yuan
Abstract High precision determination of atomic position is necessary for quantitative electron microscopy so that small width of peaks, which represent atoms in structural images, adequate resolution, and sufficiently strong image contrast are needed. The width of peak is usually determined by the point spread (PS) of instruments, but the PS of objects should also be taken into consideration in aberration-corrected transmission electron microscopy when point resolution of a microscope reaches the sub-angstrom scale, and thus the PS of the instrument is comparable with that of the object. In this article, PS is investigated by studying peak width with variation of atomic number, sample thickness, and spherical aberration coefficients in both negative Cs (NCSI) and positive Cs imaging (PCSI) modes by means of dynamical image simulation. Through comparing the peak width with various atomic number, thickness, and values of spherical aberration, NCSI mode is found to be superior to PCSI considering the smaller width.
登录
查看更多内容
影响因子:
2.2
作者:
R. Yu;M. Lentzen;J. Zhu
通讯作者:
R. Yu;M. Lentzen;J. Zhu
DOI:
10.1107/s0108767385000800
发表时间:
1985-07
期刊:
Acta Crystallographica Section A
影响因子:
--
作者:
F. H. Li;D. Tang
通讯作者:
F. H. Li;D. Tang
DOI:
10.1007/978-1-4419-6533-2
发表时间:
1998
期刊:
--
影响因子:
--
作者:
E. Kirkland
通讯作者:
E. Kirkland
影响因子:
56.9
作者:
Jia, CL;Urban, K
通讯作者:
Urban, K
影响因子:
3
作者:
S. Aert;A. J. D. Dekker;D. Dyck;A. Bos
通讯作者:
S. Aert;A. J. D. Dekker;D. Dyck;A. Bos