Publication
Title
Combination of HAADF-STEM and ADF-STEM tomography for coreshell hybrid materials
Author
Abstract
Characterization of coreshell type nanoparticles in 3D by transmission electron microscopy (TEM) can be very challenging. Especially when both heavy and light elements coexist within the same nanostructure, artifacts in the 3D reconstruction are often present. A representative example would be a particle comprising an anisotropic metallic (Au) nanoparticle coated with a (mesoporous) silica shell. To obtain a reliable 3D characterization of such an object, a dose-efficient strategy is proposed to simultaneously acquire high-angle annular dark-field scanning TEM and annular dark-field tilt series for tomography. The 3D reconstruction is further improved by applying an advanced masking and interpolation approach to the acquired data. This new methodology enables us to obtain high-quality reconstructions from which also quantitative information can be extracted. This approach is broadly applicable to investigate hybrid coreshell materials.
Language
English
Source (journal)
Particle and particle systems characterization. - Weinheim
Publication
Weinheim : 2015
ISSN
0934-0866
Volume/pages
32:12(2015), p. 1063-1067
ISI
000368446800003
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 10.12.2015
Last edited 17.06.2017
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