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

Kód výsledku v 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>

Nalezeny alternativní kódy

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

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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).

Název v anglickém jazyce

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

Popis výsledku anglicky

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).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Microscopy and Microanalysis

ISSN

1431-9276

e-ISSN

1435-8115

Svazek periodika

31

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

ozaf045

Kód UT WoS článku

001505505000001

EID výsledku v databázi Scopus

2-s2.0-105008126580