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CITATION.cff
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cff-version: 1.1.0
message: "If you use this software, please cite the accompanying paper."
abstract: "Scanning transmission electron microscopy (STEM) allows for imaging, diffraction, and spectroscopy of materials on length scales ranging from microns to atoms. By using a high-speed, direct electron detector, it is now possible to record a full two-dimensional (2D) image of the diffracted electron beam at each probe position, typically a 2D grid of probe positions. These 4D-STEM datasets are rich in information, including signatures of the local structure, orientation, deformation, electromagnetic fields, and other sample-dependent properties. However, extracting this information requires complex analysis pipelines that include data wrangling, calibration, analysis, and visualization, all while maintaining robustness against imaging distortions and artifacts. In this paper, we present py4DSTEM, an analysis toolkit for measuring material properties from 4D-STEM datasets, written in the Python language and released with an open-source license. We describe the algorithmic steps for dataset calibration and various 4D-STEM property measurements in detail and present results from several experimental datasets. We also implement a simple and universal file format appropriate for electron microscopy data in py4DSTEM, which uses the open-source HDF5 standard. We hope this tool will benefit the research community and help improve the standards for data and computational methods in electron microscopy, and we invite the community to contribute to this ongoing project."
authors:
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Savitzky
given-names: "Benjamin H."
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affiliation: "Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA"
family-names: Zeltmann
given-names: "Steven E. "
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Hughes
given-names: "Lauren A."
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Brown
given-names: "Hamish G."
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA and Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA"
family-names: Zhao
given-names: Shiteng
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA and Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA"
family-names: Pelz
given-names: "Philipp M."
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affiliation: "Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany"
family-names: Pekin
given-names: "Thomas C."
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affiliation: "Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Barnard
given-names: "Edward S."
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA"
family-names: Donohue
given-names: Jennifer
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA"
family-names: "Rangel DaCosta"
given-names: Luis
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA"
family-names: Kennedy
given-names: Ellis
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Xie
given-names: Yujun
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affiliation: "Los Alamos National Laboratory, Los Alamos, NM 87545, USA"
family-names: Janish
given-names: "Matthew T."
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affiliation: "Los Alamos National Laboratory, Los Alamos, NM 87545, USA"
family-names: Schneider
given-names: "Matthew M."
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affiliation: "Toyota Research Institute, Los Altos, CA 94022, USA"
family-names: Herring
given-names: Patrick
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affiliation: "Toyota Research Institute, Los Altos, CA 94022, USA"
family-names: Gopal
given-names: Chirranjeevi
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affiliation: "Toyota Research Institute, Los Altos, CA 94022, USA"
family-names: Anapolsky
given-names: Abraham
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Dhall
given-names: Rohan
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Bustillo
given-names: "Karen C."
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Ercius
given-names: Peter
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA"
family-names: Scott
given-names: "Mary C."
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Ciston
given-names: Jim
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA"
family-names: Minor
given-names: "Andrew M."
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affiliation: "National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA"
family-names: Ophus
given-names: Colin
title: "py4DSTEM: A Software Package for Four-Dimensional Scanning Transmission Electron Microscopy Data Analysis"
version: 0.12.6
doi: 10.1017/S1431927621000477
date-released: 2021-05-21