The Dresden in-situ (S)TEM special with a continuous-flow liquid-helium cryostat.
In-situ
Instrumentation
STEM
TEM
Journal
Ultramicroscopy
ISSN: 1879-2723
Titre abrégé: Ultramicroscopy
Pays: Netherlands
ID NLM: 7513702
Informations de publication
Date de publication:
Aug 2019
Aug 2019
Historique:
received:
10
07
2018
revised:
30
12
2018
accepted:
21
01
2019
pubmed:
25
3
2019
medline:
25
3
2019
entrez:
24
3
2019
Statut:
ppublish
Résumé
Fundamental solid state physics phenomena often occur at very low temperatures, requiring liquid helium cooling in experimental studies. Transmission electron microscopy is a well-established characterization method, which allows probing crucial materials properties down to nanometre and even atomic resolution. Due to the limited space in the object plane, however, suitable liquid-helium cooling is very challenging. To overcome this limitation, resolving power was sacrificed in our Dresden in-situ (S)TEM special, resulting in more than 60 mm usable experimental space in all directions with the specimen in the centre. With the installation of a continuous-flow liquid-helium cryostat, any temperature between 6.5 K and 400 K can be set precisely and kept for days. The information limit of the Dresden in-situ (S)TEM special is about 5 nm. It is shown that the resolution of the Dresden in-situ (S)TEM special is currently not limited by aberrations, but by external instabilities.
Identifiants
pubmed: 30902417
pii: S0304-3991(18)30242-0
doi: 10.1016/j.ultramic.2019.01.005
pii:
doi:
Types de publication
Journal Article
Langues
eng
Pagination
12-20Informations de copyright
Copyright © 2019 Elsevier B.V. All rights reserved.