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Title: Identifying Defects with Guided Algorithms in Bragg Coherent Diffractive Imaging

Abstract

In this study, crystallographic defects such as dislocations can significantly alter material properties and functionality. However, imaging these imperfections during operation remains challenging due to the short length scales involved and the reactive environments of interest. Bragg coherent diffractive imaging (BCDI) has emerged as a powerful tool capable of identifying dislocations, twin domains, and other defects in 3D detail with nanometer spatial resolution within nanocrystals and grains in reactive environments. However, BCDI relies on phase retrieval algorithms that can fail to accurately reconstruct the defect network. Here, we use numerical simulations to explore different guided phase retrieval algorithms for imaging defective crystals using BCDI. We explore different defect types, defect densities, Bragg peaks, and guided algorithm fitness metrics as a function of signal-to-noise ratio. Based on these results, we offer a general prescription for phasing of defective crystals with no a prior knowledge.

Authors:
ORCiD logo [1];  [1];  [2];  [2];  [1];  [3]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. Grenoble Alpes, Grenoble (France)
  3. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Materials Sciences and Engineering Division
OSTI Identifier:
1395865
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Ulvestad, A., Nashed, Y., Beutier, G., Verdier, M., Hruszkewycz, S. O., and Dupraz, M. Identifying Defects with Guided Algorithms in Bragg Coherent Diffractive Imaging. United States: N. p., 2017. Web. doi:10.1038/s41598-017-09582-7.
Ulvestad, A., Nashed, Y., Beutier, G., Verdier, M., Hruszkewycz, S. O., & Dupraz, M. Identifying Defects with Guided Algorithms in Bragg Coherent Diffractive Imaging. United States. https://doi.org/10.1038/s41598-017-09582-7
Ulvestad, A., Nashed, Y., Beutier, G., Verdier, M., Hruszkewycz, S. O., and Dupraz, M. Wed . "Identifying Defects with Guided Algorithms in Bragg Coherent Diffractive Imaging". United States. https://doi.org/10.1038/s41598-017-09582-7. https://www.osti.gov/servlets/purl/1395865.
@article{osti_1395865,
title = {Identifying Defects with Guided Algorithms in Bragg Coherent Diffractive Imaging},
author = {Ulvestad, A. and Nashed, Y. and Beutier, G. and Verdier, M. and Hruszkewycz, S. O. and Dupraz, M.},
abstractNote = {In this study, crystallographic defects such as dislocations can significantly alter material properties and functionality. However, imaging these imperfections during operation remains challenging due to the short length scales involved and the reactive environments of interest. Bragg coherent diffractive imaging (BCDI) has emerged as a powerful tool capable of identifying dislocations, twin domains, and other defects in 3D detail with nanometer spatial resolution within nanocrystals and grains in reactive environments. However, BCDI relies on phase retrieval algorithms that can fail to accurately reconstruct the defect network. Here, we use numerical simulations to explore different guided phase retrieval algorithms for imaging defective crystals using BCDI. We explore different defect types, defect densities, Bragg peaks, and guided algorithm fitness metrics as a function of signal-to-noise ratio. Based on these results, we offer a general prescription for phasing of defective crystals with no a prior knowledge.},
doi = {10.1038/s41598-017-09582-7},
url = {https://www.osti.gov/biblio/1395865}, journal = {Scientific Reports},
issn = {2045-2322},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {8}
}

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Cited by: 3 works
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    Works referencing / citing this record:

    Nucleation-Controlled Plasticity of Metallic Nanowires and Nanoparticles
    journal, July 2018


    Bragg coherent diffraction imaging of iron diffusion into gold nanocrystals
    journal, November 2018


    Nanoscale imaging of the full strain tensor of specific dislocations extracted from a bulk sample
    journal, January 2020