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  • Evolution in X-ray analysis from micro to atomic scales in aberration-corrected scanning transmission electron microscopes
Title: Evolution in X-ray analysis from micro to atomic scales in aberration-corrected scanning transmission electron microscopes
Abstract X-ray analysis is one of the most robust approaches to extract quantitative information from various materials and is widely used in various fields ever since Raimond Castaing established procedures to analyze electron-induced X-ray signals for materials characterization ‘70 years ago’. The recent development of aberration-correction technology in a (scanning) transmission electron microscopes (S/TEMs) offers refined electron probes below the Å level, making atomic-resolution X-ray analysis possible. In addition, the latest silicon drift detectors allow complex detector arrangements and new configurational designs to maximize the collection efficiency of X-ray signals, which make it feasible to acquire X-ray signals from single atoms. In this review paper, recent progress and advantages related to S/TEM-based X-ray analysis will be discussed: (i) progress in quantification for materials characterization including the recent applications to light element analysis, (ii) progress in analytical spatial resolution for atomic-resolution analysis and (iii) progress in analytical sensitivity toward single-atom detection and analysis in materials. Both atomic-resolution analysis and single-atom analysis are evaluated theoretically through multislice-based calculation for electron propagation in oriented crystalline specimen in combination with X-ray spectrum simulation.  more » « less
Award ID(s):
2016279 2018683
PAR ID:
10344776
Author(s) / Creator(s):
;
Date Published:
Journal Name:
Microscopy
Volume:
71
Issue:
Supplement_1
ISSN:
2050-5698
Page Range / eLocation ID:
i132 to i147
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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