Zobrazeno 1 - 10
of 393
pro vyhledávání: '"coherent diffractive imaging"'
Autor:
Alfredo Bellisario, Tomas Ekeberg
Publikováno v:
Machine Learning: Science and Technology, Vol 5, Iss 4, p 045022 (2024)
Phase retrieval is an important optimization problem that occurs, for example, in the analysis of coherent diffraction patterns from isolated proteins. All iterative algorithms employed for phase retrieval in this context require some a priori knowle
Externí odkaz:
https://doaj.org/article/f1e3448acb664339a6f9c2661ea0e1cf
Akademický článek
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Publikováno v:
AI, Vol 3, Iss 2, Pp 274-284 (2022)
We present a deep learning-based generative model for the enhancement of partially coherent diffractive images. In lensless coherent diffractive imaging, a highly coherent X-ray illumination is required to image an object at high resolution. Non-idea
Externí odkaz:
https://doaj.org/article/331f3985fd1248a897e4cd989bb0b84d
Autor:
Michael W. M. Jones, Grant A. van Riessen, Nicholas W. Phillips, Christoph E. Schrank, Gerard N. Hinsley, Nader Afshar, Juliane Reinhardt, Martin D. de Jonge, Cameron M. Kewish
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 2, Pp 480-487 (2022)
Over the last decade ptychography has progressed rapidly from a specialist ultramicroscopy technique into a mature method accessible to non-expert users. However, to improve scientific value ptychography data must reconstruct reliably, with high imag
Externí odkaz:
https://doaj.org/article/6cae4b595ac44e639bac2f82dbf266f8
Akademický článek
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Autor:
Toshiyuki Nishiyama, Akinobu Niozu, Christoph Bostedt, Ken R. Ferguson, Yuhiro Sato, Christopher Hutchison, Kiyonobu Nagaya, Hironobu Fukuzawa, Koji Motomura, Shin-ichi Wada, Tsukasa Sakai, Kenji Matsunami, Kazuhiro Matsuda, Tetsuya Tachibana, Yuta Ito, Weiqing Xu, Subhendu Mondal, Takayuki Umemoto, Christophe Nicolas, Catalin Miron, Takashi Kameshima, Yasumasa Joti, Kensuke Tono, Takaki Hatsui, Makina Yabashi, Kiyoshi Ueda
Publikováno v:
IUCrJ, Vol 7, Iss 1, Pp 10-17 (2020)
With the emergence of X-ray free-electron lasers, it is possible to investigate the structure of nanoscale samples by employing coherent diffractive imaging in the X-ray spectral regime. In this work, we developed a refinement method for structure re
Externí odkaz:
https://doaj.org/article/97df9db764404b8c9a357a33da0ae0b3
Autor:
C Peltz, J A Powell, P Rupp, A Summers, T Gorkhover, M Gallei, I Halfpap, E Antonsson, B Langer, C Trallero-Herrero, C Graf, D Ray, Q Liu, T Osipov, M Bucher, K Ferguson, S Möller, S Zherebtsov, D Rolles, E Rühl, G Coslovich, R N Coffee, C Bostedt, A Rudenko, M F Kling, T Fennel
Publikováno v:
New Journal of Physics, Vol 24, Iss 4, p 043024 (2022)
The free expansion of a planar plasma surface is a fundamental non-equilibrium process relevant for various fields but as-yet experimentally still difficult to capture. The significance of the associated spatiotemporal plasma motion ranges from astro
Externí odkaz:
https://doaj.org/article/d56347cb28e047d98aef0c168b2118e5
Autor:
Timur E. Gureyev, Alexander Kozlov, Yakov I. Nesterets, David M. Paganin, Andrew V. Martin, Harry M. Quiney
Publikováno v:
IUCrJ, Vol 5, Iss 6, Pp 716-726 (2018)
It is shown that the average signal-to-noise ratio (SNR) in the three-dimensional electron-density distribution of a sample reconstructed by coherent diffractive imaging cannot exceed twice the square root of the ratio of the mean total number of sca
Externí odkaz:
https://doaj.org/article/92381ebe01e0486c970b5844ed7dc28e
Autor:
Ida V. Lundholm, Jonas A. Sellberg, Tomas Ekeberg, Max F. Hantke, Kenta Okamoto, Gijs van der Schot, Jakob Andreasson, Anton Barty, Johan Bielecki, Petr Bruza, Max Bucher, Sebastian Carron, Benedikt J. Daurer, Ken Ferguson, Dirk Hasse, Jacek Krzywinski, Daniel S. D. Larsson, Andrew Morgan, Kerstin Mühlig, Maria Müller, Carl Nettelblad, Alberto Pietrini, Hemanth K. N. Reddy, Daniela Rupp, Mario Sauppe, Marvin Seibert, Martin Svenda, Michelle Swiggers, Nicusor Timneanu, Anatoli Ulmer, Daniel Westphal, Garth Williams, Alessandro Zani, Gyula Faigel, Henry N. Chapman, Thomas Möller, Christoph Bostedt, Janos Hajdu, Tais Gorkhover, Filipe R. N. C. Maia
Publikováno v:
IUCrJ, Vol 5, Iss 5, Pp 531-541 (2018)
Diffraction before destruction using X-ray free-electron lasers (XFELs) has the potential to determine radiation-damage-free structures without the need for crystallization. This article presents the three-dimensional reconstruction of the Melbournev
Externí odkaz:
https://doaj.org/article/f9f24d9a5b9b428587c782e2035a0d30
Akademický článek
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