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Ptychographic wavefront characterisation for single-particle imaging at X-ray lasers
Benedikt J. Daurer, Simone Sala, Max F. Hantke +13
A well-characterised wavefront is important for many X-ray free-electron laser (XFEL) experiments, especially for single-particle imaging (SPI), where individual bio-molecules rand…
Augmented projections for ptychographic imaging
Stefano Marchesini, Andre Schirotzek, Chao Yang +2
Ptychography is a popular technique to achieve diffraction limited resolution images of a two or three dimensional sample using high frame rate detectors. We introduce a relaxation…
Iterative Algorithms for Ptychographic Phase Retrieval
C. Yang, J. Qian, A. Schirotzek +2
Ptychography promises diffraction limited resolution without the need for high resolution lenses. To achieve high resolution one has to solve the phase problem for many partially o…
Compressive auto-indexing in femtosecond nanocrystallography
F. R. N. C. Maia, C. Yang, S. Marchesini
Ultrafast nanocrystallography has the potential to revolutionize biology by enabling structural elucidation of proteins for which it is possible to grow crystals with 10 or fewer u…
Compressive Phase Contrast Tomography
F. R. N. C. Maia, A. MacDowell, S. Marchesini +5
When x-rays penetrate soft matter, their phase changes more rapidly than their amplitude. In- terference effects visible with high brightness sources creates higher contrast, edge…
Cryptotomography: reconstructing 3D Fourier intensities from randomly oriented single-shot diffraction patterns
N. D. Loh, M. Bogan, V. Elser +17
We reconstructed the 3D Fourier intensity distribution of mono-disperse prolate nano-particles using single-shot 2D coherent diffraction patterns collected at DESY's FLASH facility…