4D-STEM-in-SEM: changing an SEM microscope to a user-friendly powder electron diffractometer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00636691" target="_blank" >RIV/61389013:_____/25:00636691 - isvavai.cz</a>

Alternative codes found

RIV/68081731:_____/25:00636691 RIV/00216305:26210/26:0198572

Result on the web

<a href="https://academic.oup.com/mam/article/31/3/ozaf045/8160210" target="_blank" >https://academic.oup.com/mam/article/31/3/ozaf045/8160210</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mam/ozaf045" target="_blank" >10.1093/mam/ozaf045</a>

Result language

angličtina

Original language name

4D-STEM-in-SEM: changing an SEM microscope to a user-friendly powder electron diffractometer

Original language description

We describe recent improvements of our method named powder nanobeam diffraction in four-dimensional scanning transmission electron microscopy (4D-STEM/PNBD). The method can change an arbitrary SEM equipped with a 2D-array STEM detector to a user-friendly powder electron diffractometer. It reduces a 4D-STEM dataset to a single 2D powder electron diffraction pattern (using our Python package named STEMDIFF, https://pypi.org/project/stemdiff) and then to 1D radially averaged diffraction profile (using our Python package named EDIFF, https://pypi.org/project/ediff). Moreover, the EDIFF package can compare the final diffractogram with theoretically calculated X-ray diffraction patterns. Both STEMDIFF and EDIFF can be used in the form of simple interactive templates in Jupyter environment, which makes them accessible to common SEM users. The recent improvements in STEMDIFF and EDIFF (better dataset filtering, parallelization, and more flexible user interface) enabled us to analyze not only strongly diffracting nanocrystals but also samples with higher absorption and/or lower diffraction power. The final results obtained from 4D-STEM/PNBD datasets of all six samples analyzed in this contribution (two types of Au nanocrystals, GdF3 and TbF3 aggregates, and Fe3O4 nanoclusters with/without organic shell) were shown to be comparable with the results of the classical TEM/SAED method (selected area electron diffraction in TEM).

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Microscopy and Microanalysis

ISSN

1431-9276

e-ISSN

1435-8115

Volume of the periodical

31

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

ozaf045

UT code for WoS article

001505505000001

EID of the result in the Scopus database

2-s2.0-105008126580