Issue 19, 2021, Issue in Progress

Dynamic observation and motion tracking of individual gold atoms with HAADF-STEM imaging

Abstract

A modern aberration-corrected scanning transmission electron microscope (STEM) is used to study the motion of individual gold atoms on an amorphous carbon film. With a probe size of 0.7 Å, individual gold atoms are clearly resolved. Sequential Z-contrast images are captured with ten frames per second, and moving atoms are tracked frame-by-frame with the feature point tracking algorithm. The tracked trajectories give direct visualization of individual atoms' movements, and the number of tracked atoms in each frame is quantified. The result indicates that the observed behaviors of atoms are mainly dominated by the beam-induced motion.

Graphical abstract: Dynamic observation and motion tracking of individual gold atoms with HAADF-STEM imaging

Supplementary files

Article information

Article type
Paper
Submitted
18 Nov 2020
Accepted
10 Mar 2021
First published
16 Mar 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 11057-11061

Dynamic observation and motion tracking of individual gold atoms with HAADF-STEM imaging

W. Wang and W. Cai, RSC Adv., 2021, 11, 11057 DOI: 10.1039/D0RA09799C

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