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arXiv · 2010.16374

Three-dimensional coherent Bragg imaging of rotating nanoparticles

Alexander Björling·Lucas A. B. Marçal·José Solla-Gullón·Jesper Wallentin·Dina Carbone·Filipe R. N. C. Maia
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Abstract

Bragg Coherent Diffraction Imaging (BCDI) is a powerful strain imaging tool, often limited by beam-induced sample instability for small particles and high power densities. Here, we devise and validate an adapted diffraction volume assembly algorithm, capable of recovering three-dimensional datasets from particles undergoing uncontrolled and unknown rotations. We apply the method to gold nanoparticles which rotate under the influence of a focused coherent X-ray beam, retrieving their three-dimensional shapes and strain fields. The results show that the sample instability problem can be overcome, enabling the use of fourth generation synchrotron sources for BCDI to their full potential.

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Alexander Björling, Lucas A. B. Marçal, José Solla-Gullón, Jesper Wallentin, Dina Carbone, Filipe R. N. C. Maia. 2020-10-30. Three-dimensional coherent Bragg imaging of rotating nanoparticles. https://doi.org/10.1103/physrevlett.125.246101

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