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Shear displacement gradient in X-ray Bragg coherent diffractive imaging
Bragg coherent X-ray diffractive imaging is a cutting-edge method for recovering three-dimensional crystal structure with nanoscale resolution. Phase retrieval provides an atomic displacement parallel to the Bragg peak reciprocal lattice vector. The derivative of the displacement along the same vect...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070722/ https://www.ncbi.nlm.nih.gov/pubmed/35511019 http://dx.doi.org/10.1107/S1600577522002363 |
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author | Gorobtsov, Oleg Singer, Andrej |
author_facet | Gorobtsov, Oleg Singer, Andrej |
author_sort | Gorobtsov, Oleg |
collection | PubMed |
description | Bragg coherent X-ray diffractive imaging is a cutting-edge method for recovering three-dimensional crystal structure with nanoscale resolution. Phase retrieval provides an atomic displacement parallel to the Bragg peak reciprocal lattice vector. The derivative of the displacement along the same vector provides the normal strain field, which typically serves as a proxy for any structural changes. In this communication it is found that the other component of the displacement gradient, perpendicular to the reciprocal lattice vector, provides additional information from the experimental data collected from nanocrystals with mobile dislocations. Demonstration on published experimental data show how the perpendicular component of the displacement gradient adds to existing analysis, enabling an estimate for the external stresses, pinpointing the location of surface dislocations, and predicting the dislocation motion in in situ experiments. |
format | Online Article Text |
id | pubmed-9070722 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-90707222022-05-10 Shear displacement gradient in X-ray Bragg coherent diffractive imaging Gorobtsov, Oleg Singer, Andrej J Synchrotron Radiat Short Communications Bragg coherent X-ray diffractive imaging is a cutting-edge method for recovering three-dimensional crystal structure with nanoscale resolution. Phase retrieval provides an atomic displacement parallel to the Bragg peak reciprocal lattice vector. The derivative of the displacement along the same vector provides the normal strain field, which typically serves as a proxy for any structural changes. In this communication it is found that the other component of the displacement gradient, perpendicular to the reciprocal lattice vector, provides additional information from the experimental data collected from nanocrystals with mobile dislocations. Demonstration on published experimental data show how the perpendicular component of the displacement gradient adds to existing analysis, enabling an estimate for the external stresses, pinpointing the location of surface dislocations, and predicting the dislocation motion in in situ experiments. International Union of Crystallography 2022-04-05 /pmc/articles/PMC9070722/ /pubmed/35511019 http://dx.doi.org/10.1107/S1600577522002363 Text en © Gorobtsov and Singer 2022 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. |
spellingShingle | Short Communications Gorobtsov, Oleg Singer, Andrej Shear displacement gradient in X-ray Bragg coherent diffractive imaging |
title | Shear displacement gradient in X-ray Bragg coherent diffractive imaging |
title_full | Shear displacement gradient in X-ray Bragg coherent diffractive imaging |
title_fullStr | Shear displacement gradient in X-ray Bragg coherent diffractive imaging |
title_full_unstemmed | Shear displacement gradient in X-ray Bragg coherent diffractive imaging |
title_short | Shear displacement gradient in X-ray Bragg coherent diffractive imaging |
title_sort | shear displacement gradient in x-ray bragg coherent diffractive imaging |
topic | Short Communications |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070722/ https://www.ncbi.nlm.nih.gov/pubmed/35511019 http://dx.doi.org/10.1107/S1600577522002363 |
work_keys_str_mv | AT gorobtsovoleg sheardisplacementgradientinxraybraggcoherentdiffractiveimaging AT singerandrej sheardisplacementgradientinxraybraggcoherentdiffractiveimaging |