Ptychographic X-ray computed tomography is a quantitative three-dimensional imaging technique offered to users of multiple synchrotron radiation sources. Its dependence on the coherent fraction of the available X-ray beam makes it perfectly suited to diffraction-limited storage rings. Although MAX IV is the first, and so far only, operating fourth-generation synchrotron light source, none of its experimental stations is currently set up to offer this technique to its users. The first ptychographic X-ray computed tomography experiment has therefore been performed on the NanoMAX beamline. From the results, information was gained about the current limitations of the experimental setup and where attention should be focused for improvement. The extracted parameters in terms of scanning speed, size of the imaged volume and achieved resolutions should provide a baseline for future users designing nano-tomography experiments on the NanoMAX beamline.
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http://dx.doi.org/10.1107/S160057672001211X | DOI Listing |
J Xray Sci Technol
December 2024
Henan Key Laboratory of Imaging and Intelligent Processing, Information Engineering University, Zhengzhou, Henan, China.
Background: Coherent diffraction imaging (CDI) is an important lens-free imaging method. As a variant of CDI, ptychography enables the imaging of objects with arbitrary lateral sizes. However, traditional phase retrieval methods are time-consuming for ptychographic imaging of large-size objects, e.
View Article and Find Full Text PDFJ Imaging
November 2024
Brazilian Synchrotron Light Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Campinas 13085-970, Brazil.
We introduce ssc-cdi, an open-source software package from the Sirius Scientific Computing family, designed for memory-efficient, single-node multi-GPU ptychography reconstruction. ssc-cdi offers a range of reconstruction engines in Python version 3.9.
View Article and Find Full Text PDFUltramicroscopy
December 2024
Shenzhen Key Laboratory of Robotics Perception and Intelligence, and the Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China. Electronic address:
J Appl Crystallogr
October 2024
International Center for Synchrotron Radiation Innovation Smart, Tohoku University, 468-1 Aoba-ku, Sendai, Japan.
Sci Adv
October 2024
Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.
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