ArticleScientific reports2019
Towards a quantitative determination of strain in Bragg Coherent X-ray Diffraction Imaging: artefacts and sign convention in reconstructions.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed.
- Machine learning assisted masking of parasitic signals in Bragg coherent diffraction imaging.Journal of synchrotron radiation · 2026Article
- Enhancing resolution with the extended image restoration method: strain field energy and correlation length analysis in Bragg coherent X-ray diffraction imaging.Journal of synchrotron radiation · 2025Article
- Prospects for coherent X-ray diffraction imaging at fourth-generation synchrotron sources.IUCrJ · 2025Article
- Patching-based deep-learning model for the inpainting of Bragg coherent diffraction patterns affected by detector gaps.Journal of applied crystallography · 2024Article
- Unraveling the synergistic effects of Cu-Ag tandem catalysts during electrochemical CONature communications · 2023Article
- Defects and nanostrain gradients control phase transition mechanisms in single crystal high-voltage lithium spinel.Nature communications · 2023Article
- A finite difference scheme for integrating the Takagi-Taupin equations on an arbitrary orthogonal grid.Acta crystallographica. Section A, Foundations and advances · 2022Article
- Article
- Imaging the facet surface strain state of supported multi-faceted Pt nanoparticles during reaction.Nature communications · 2022Article
- The influence of strain on image reconstruction in Bragg coherent X-ray diffraction imaging and ptychography.Journal of synchrotron radiation · 2021Article
- Annealing of focused ion beam damage in gold microcrystals: an in situ Bragg coherent X-ray diffraction imaging study.Journal of synchrotron radiation · 2021Article
- Three-dimensional strain dynamics govern the hysteresis in heterogeneous catalysis.Nature communications · 2020Article
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10 authors.
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Abstract
Bragg coherent X-ray diffraction imaging (BCDI) has emerged as a powerful technique to image the local displacement field and strain in nanocrystals, in three dimensions with nanometric spatial resolution. However, BCDI relies on both dataset collection and phase retrieval algorithms that can induce artefacts in the reconstruction. Phase retrieval algorithms are based on the fast Fourier transform (FFT). We demonstrate how to calculate the displacement field inside a nanocrystal from its reconstructed phase depending on the mathematical convention used for the FFT. We use numerical simulations to quantify the influence of experimentally unavoidable detector deficiencies such as blind areas or limited dynamic range as well as post-processing filtering on the reconstruction. We also propose a criterion for the isosurface determination of the object, based on the histogram of the reconstructed modulus. Finally, we study the capability of the phasing algorithm to quantitatively retrieve the surface strain (i.e., the strain of the surface voxels). This work emphasizes many aspects that have been neglected so far in BCDI, which need to be understood for a quantitative analysis of displacement and strain based on this technique. It concludes with the optimization of experimental parameters to improve throughput and to establish BCDI as a reliable 3D nano-imaging technique.
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