3D Atomic Structure of Supported Metallic Nanoparticles Estimated from 2D ADF STEM Images: A Combination of Atom-Counting and a Local Minima Search Algorithm.
Sign Up to like & getrecommendations! Published in 2021 at "Small methods"
DOI: 10.1002/smtd.202101150
Abstract: Determining the 3D atomic structure of nanoparticles (NPs) is critical to understand their structure-dependent properties. It is hereby important to perform such analyses under conditions relevant for the envisioned application. Here, the 3D structure of… read more here.
Keywords: atomic structure; adf stem; atom counting; structure supported ... See more keywords
Combining quantitative ADF STEM with SiNx membrane-based MEMS devices: A simulation study with Pt nanoparticles.
Sign Up to like & getrecommendations! Published in 2021 at "Ultramicroscopy"
DOI: 10.1016/j.ultramic.2021.113270
Abstract: Computer simulations are used to assess the influence of a 20-nm-thick SiNx membrane on the quantification of atomic-resolution annular dark-field (ADF) scanning transmission electron microscopy images of Pt nanoparticles. The discussions include the effect of… read more here.
Keywords: combining quantitative; stem sinx; sinx membrane; membrane ... See more keywords
Modelling ADF STEM images using elliptical Gaussian peaks and its effects on the quantification of structure parameters in the presence of sample tilt.
Sign Up to like & getrecommendations! Published in 2021 at "Ultramicroscopy"
DOI: 10.1016/j.ultramic.2021.113391
Abstract: A small sample tilt away from a main zone axis orientation results in an elongation of the atomic columns in ADF STEM images. An often posed research question is therefore whether the ADF STEM image… read more here.
Keywords: adf stem; stem images; gaussian peaks; sample tilt ... See more keywords
Simultaneous iDPC and ADF STEM Imaging at the Limit of Contrast and Resolution
Sign Up to like & getrecommendations! Published in 2018 at "Microscopy and Microanalysis"
DOI: 10.1017/s1431927618001563
Abstract: It has recently been reported that the Integrated Differential Phase Contrast STEM (iDPC-STEM) technique [1, 2] enables imaging of both light and heavy atoms together in a thin sample at sub-Å resolution [3]. Furthermore it… read more here.
Keywords: resolution; contrast; simultaneous idpc; adf stem ... See more keywords
Investigation of Strain in Core@shell Electrocatalysts with ADF-STEM and 4D STEM Scanning Nanodiffraction
Sign Up to like & getrecommendations! Published in 2019 at "Microscopy and Microanalysis"
DOI: 10.1017/s1431927619010638
Abstract: Strain engineering of bimetallic core@shell electrocatalysts is a promising approach to increase catalytic selectivity, activity, and durability of catalysts in electrochemical energy conversion applications [1,2]. The catalytic activity has been proposed to be controlled by… read more here.
Keywords: microscopy; adf stem; shell electrocatalysts; stem ... See more keywords
Direct Imaging of Photoswitching Molecular Conformations Using Individual Metal Atom Markers.
Sign Up to like & getrecommendations! Published in 2019 at "ACS nano"
DOI: 10.1021/acsnano.8b08441
Abstract: Photoswitching behavior of individual organic molecules was imaged by annular dark-field scanning transmission electron microscopy (ADF-STEM) using a highly electron beam transparent graphene support. Photoswitching azobenzene derivatives with ligands at each end containing single transition-metal… read more here.
Keywords: imaging photoswitching; graphene; metal; direct imaging ... See more keywords