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SHARP: a distributed GPU-based ptychographic solver
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Molecular biophysics.ORCID iD: 0000-0002-1887-7551
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
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2016 (English)In: Journal of applied crystallography, ISSN 0021-8898, E-ISSN 1600-5767, Vol. 49, 1245-1252 p.Article in journal (Refereed) Published
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Abstract [en]

Ever brighter light sources, fast parallel detectors and advances in phase retrieval methods have made ptychography a practical and popular imaging technique. Compared to previous techniques, ptychography provides superior robustness and resolution at the expense of more advanced and time-consuming data analysis. By taking advantage of massively parallel architectures, high-throughput processing can expedite this analysis and provide microscopists with immediate feedback. These advances allow real-time imaging at wavelength-limited resolution, coupled with a large field of view. This article describes a set of algorithmic and computational methodologies used at the Advanced Light Source and US Department of Energy light sources. These are packaged as a CUDA-based software environment named SHARP (http://camera.lbl.gov/sharp), aimed at providing state-of-the-art high-throughput ptychography reconstructions for the coming era of diffraction-limited light sources.

Place, publisher, year, edition, pages
2016. Vol. 49, 1245-1252 p.
Keyword [en]
coherent X-ray diffractive imaging, ptychography, nanoscience, X-ray microscopy, phase-contrast X-ray imaging
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:uu:diva-300178DOI: 10.1107/S1600576716008074ISI: 000382755900015OAI: oai:DiVA.org:uu-300178DiVA: diva2:950992
Funder
Swedish Research CouncilSwedish Foundation for Strategic Research
Available from: 2016-08-04 Created: 2016-08-04 Last updated: 2017-09-06

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