Software electron counting for low-dose scanning transmission electron microscopy

Author(s)
Andreas Mittelberger, Christian Kramberger, Jannik C. Meyer
Abstract

The performance of the detector is of key importance for low-dose imaging in transmission electron microscopy, and counting every single electron can be considered as the ultimate goal. In scanning transmission electron microscopy, low-dose imaging can be realized by very fast scanning, however, this also introduces artifacts and a loss of resolution in the scan direction. We have developed a software approach to correct for artifacts introduced by fast scans, making use of a scintillator and photomultiplier response that extends over several pixels. The parameters for this correction can be directly extracted from the raw image. Finally, the images can be converted into electron counts. This approach enables low-dose imaging in the scanning transmission electron microscope via high scan speeds while retaining the image quality of artifact-free slower scans. (C) 2018 The Authors. Published by Elsevier B.V.

Organisation(s)
Physics of Nanostructured Materials
Journal
Ultramicroscopy
Volume
188
Pages
1-7
No. of pages
7
ISSN
0304-3991
DOI
https://doi.org/10.1016/j.ultramic.2018.02.005
Publication date
05-2018
Peer reviewed
Yes
Austrian Fields of Science 2012
Electron microscopy
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/software-electron-counting-for-lowdose-scanning-transmission-electron-microscopy(6ec0de41-5683-4fee-93ce-9edbb678df35).html