Journal ArticleDOI
Hard x-ray scanning microscopy with coherent radiation: Beyond the resolution of conventional x-ray microscopes
A. Schropp,Robert Hoppe,Jens Patommel,D. Samberg,Frank Seiboth,Sandra Stephan,G. Wellenreuther,Gerald Falkenberg,Christian G. Schroer +8 more
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TLDR
In this paper, the authors demonstrate x-ray scanning coherent diffraction microscopy (ptychography) with 10nm spatial resolution, clearly exceeding the resolution limits of conventional hard X-ray microscopy, showing that the spatial resolution in a ptychogram is dependent on the shape (structure factor) of a feature and can vary for different features in the object.Abstract:
We demonstrate x-ray scanning coherent diffraction microscopy (ptychography) with 10 nm spatial resolution, clearly exceeding the resolution limits of conventional hard x-ray microscopy. The spatial resolution in a ptychogram is shown to depend on the shape (structure factor) of a feature and can vary for different features in the object. In addition, the resolution and contrast are shown to increase with increasing coherent fluence. For an optimal ptychographic x-ray microscope, this implies a source with highest possible brilliance and an x-ray optic with a large numerical aperture to generate the optimal probe beam.read more
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High-resolution X-ray computed tomography in geosciences: A review of the current technology and applications
Veerle Cnudde,Matthieu Boone +1 more
TL;DR: A review of the principle, the advantages and limitations of X-ray CT itself are presented, together with an overview of some current applications of micro-CT in geosciences.
Journal ArticleDOI
X-ray ptychography
TL;DR: X-ray ptychographic microscopy combines the advantages of raster scanning X-ray microscopy with the more recently developed techniques of coherent diffraction imaging as mentioned in this paper, and offers in principle wavelength-limited resolution, as well as stable access and solution to the phase problem.
Journal ArticleDOI
Chemical composition mapping with nanometre resolution by soft X-ray microscopy
David A. Shapiro,Young-Sang Yu,Tolek Tyliszczak,Jordi Cabana,Jordi Cabana,R. S. Celestre,Weilun Chao,Konstantin Kaznatcheev,A. L. David Kilcoyne,Filipe R. N. C. Maia,Stefano Marchesini,Y. Shirley Meng,Tony Warwick,Lee Lisheng Yang,Howard A. Padmore +14 more
TL;DR: In this article, a soft X-ray ptychography approach was used to image 5-nm-sized objects, and chemical component distributions in the delithiation of LiFePO4 nanoplates linked structural defects to chemical phase propagation.
Journal ArticleDOI
Imaging and image-based fluid transport modeling at the pore scale in geological materials : a practical introduction to the current state-of-the-art
TL;DR: This review aims to provide a practical and accessible introduction to both the experimental and numerical state-of-the-art, intended for students and researchers with backgrounds in experimental geo-sciences or computational sciences alike.
Journal ArticleDOI
X-ray ptychographic computed tomography at 16 nm isotropic 3D resolution
Mirko Holler,Ana Diaz,Manuel Guizar-Sicairos,Petri Karvinen,Elina Färm,Emma Härkönen,Mikko Ritala,Andreas Menzel,Jörg Raabe,Oliver Bunk +9 more
TL;DR: This first-of-its-kind demonstration paves the way for ptychographic X-ray tomography to become a promising method forX-ray imaging of representative sample volumes at unmatched resolution, opening tremendous potential for characterizing samples in materials science and biology.
References
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Journal ArticleDOI
High-Resolution Scanning X-ray Diffraction Microscopy
Pierre Thibault,Martin Dierolf,Andreas Menzel,Oliver Bunk,Christian David,Franz Pfeiffer,Franz Pfeiffer +6 more
TL;DR: A ptychographic imaging method is demonstrated that bridges the gap between CDI and STXM by measuring complete diffraction patterns at each point of a STXM scan.
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An improved ptychographical phase retrieval algorithm for diffractive imaging.
Andrew Maiden,John M. Rodenburg +1 more
TL;DR: The PIE is extended so that the requirement for an accurate model of the illumination function is removed and the technique has been shown to be robust to detector noise and to converge considerably faster than support-based phase retrieval methods.
Journal ArticleDOI
Ptychographic X-ray computed tomography at the nanoscale
Martin Dierolf,Andreas Menzel,Pierre Thibault,Philipp Schneider,Cameron M. Kewish,Roger Wepf,Oliver Bunk,Franz Pfeiffer +7 more
TL;DR: An X-ray computed tomography technique that generates quantitative high-contrast three-dimensional electron density maps from phase contrast information without reverting to assumptions of a weak phase object or negligible absorption is described.
Journal ArticleDOI
Hard-X-Ray Lensless Imaging of Extended Objects
John M. Rodenburg,A C Hurst,A. G. Cullis,B. R. Dobson,Franz Pfeiffer,Oliver Bunk,Christian David,Konstantins Jefimovs,Ian Johnson +8 more
TL;DR: A hard-x-ray microscope that does not use a lens and is not limited to a small field of view or an object of finite size is demonstrated, which has revolutionary implications for x-ray imaging of all classes of specimen.
Journal ArticleDOI
A phase retrieval algorithm for shifting illumination
TL;DR: In this paper, a method of iterative phase retrieval that uses measured intensities in the diffraction plane to solve the phase problem in a way that bypasses the problem of lens aberration was proposed.