scholarly journals Transient Deformation in Additively Manufactured 316L Stainless Steel Lattices Characterized with in-situ X-ray Phase Contrast Imaging: The Complete Dataset for Three Geometrical Lattices.

2021 ◽  
Author(s):  
Brittany Branch ◽  
Paul Specht ◽  
Sally Jensen ◽  
Bradley Jared
Keyword(s):  
Stainless Steel ◽  
Phase Contrast ◽  
316L Stainless Steel ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
Transient Deformation ◽  
Complete Dataset

scholarly journals Low-dose in situ prelocation of protein microcrystals by 2D X-ray phase-contrast imaging for serial crystallography

IUCrJ ◽  
2020 ◽  
Vol 7 (6) ◽  
pp. 1131-1141
Author(s):  
Isabelle Martiel ◽  
Chia-Ying Huang ◽  
Pablo Villanueva-Perez ◽  
Ezequiel Panepucci ◽  
Shibom Basu ◽  
...  
Keyword(s):  
Data Collection ◽  
Phase Contrast ◽  
Low Dose ◽  
Phase Contrast Imaging ◽  
Cubic Phase ◽  
Macromolecular Crystallography ◽  
Contrast Imaging ◽  
X Ray ◽  
Serial Data

Serial protein crystallography has emerged as a powerful method of data collection on small crystals from challenging targets, such as membrane proteins. Multiple microcrystals need to be located on large and often flat mounts while exposing them to an X-ray dose that is as low as possible. A crystal-prelocation method is demonstrated here using low-dose 2D full-field propagation-based X-ray phase-contrast imaging at the X-ray imaging beamline TOMCAT at the Swiss Light Source (SLS). This imaging step provides microcrystal coordinates for automated serial data collection at a microfocus macromolecular crystallography beamline on samples with an essentially flat geometry. This prelocation method was applied to microcrystals of a soluble protein and a membrane protein, grown in a commonly used double-sandwich in situ crystallization plate. The inner sandwiches of thin plastic film enclosing the microcrystals in lipid cubic phase were flash cooled and imaged at TOMCAT. Based on the obtained crystal coordinates, both still and rotation wedge serial data were collected automatically at the SLS PXI beamline, yielding in both cases a high indexing rate. This workflow can be easily implemented at many synchrotron facilities using existing equipment, or potentially integrated as an online technique in the next-generation macromolecular crystallography beamline, and thus benefit a number of dose-sensitive challenging protein targets.

scholarly journals In situ observation of fracture processes in high-strength concretes and limestone using high-speed X-ray phase-contrast imaging

2017 ◽  
Vol 375 (2085) ◽  
pp. 20160178 ◽  
Author(s):  
Niranjan D. Parab ◽  
Zherui Guo ◽  
Matthew Hudspeth ◽  
Benjamin Claus ◽  
Boon Him Lim ◽  
...  
Keyword(s):  
Dynamic Loading ◽  
High Speed ◽  
Phase Contrast ◽  
High Strength ◽  
Phase Contrast Imaging ◽  
In Situ Observation ◽  
Contrast Imaging ◽  
X Ray ◽  
Reactive Powder

The mechanical properties and fracture mechanisms of geomaterials and construction materials such as concrete are reported to be dependent on the loading rates. However, the in situ cracking inside such specimens cannot be visualized using traditional optical imaging methods since the materials are opaque. In this study, the in situ sub-surface failure/damage mechanisms in Cor-Tuf (a reactive powder concrete), a high-strength concrete (HSC) and Indiana limestone under dynamic loading were investigated using high-speed synchrotron X-ray phase-contrast imaging. Dynamic compressive loading was applied using a modified Kolsky bar and fracture images were recorded using a synchronized high-speed synchrotron X-ray imaging set-up. Three-dimensional synchrotron X-ray tomography was also performed to record the microstructure of the specimens before dynamic loading. In the Cor-Tuf and HSC specimens, two different modes of cracking were observed: straight cracking or angular cracking with respect to the direction of loading. In limestone, cracks followed the grain boundaries and voids, ultimately fracturing the specimen. Cracks in HSC were more tortuous than the cracks in Cor-Tuf specimens. The effects of the microstructure on the observed cracking behaviour are discussed. This article is part of the themed issue ‘Experimental testing and modelling of brittle materials at high strain rates’.

scholarly journals In-situ visualization of sound-induced otolith motion using hard X-ray phase contrast imaging

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Tanja Schulz-Mirbach ◽  
Margie Olbinado ◽  
Alexander Rack ◽  
Alberto Mittone ◽  
Alberto Bravin ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
In Situ Visualization

scholarly journals Quantitative In Situ Studies of Dynamic Fracture in Brittle Solids Using Dynamic X-ray Phase Contrast Imaging

2018 ◽  
Vol 58 (9) ◽  
pp. 1423-1437 ◽  
Author(s):  
A. F. T. Leong ◽  
A. K. Robinson ◽  
K. Fezzaa ◽  
T. Sun ◽  
N. Sinclair ◽  
...  
Keyword(s):  
Dynamic Fracture ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
In Situ Studies ◽  
Brittle Solids

Image Quality Analysis of X-ray Grating Interferometer Using Integrating-bucket Method

2020 ◽  
Vol 64 (2) ◽  
pp. 20503-1-20503-5
Author(s):  
Faiz Wali ◽  
Shenghao Wang ◽  
Ji Li ◽  
Jianheng Huang ◽  
Yaohu Lei ◽  
...  
Keyword(s):  
Image Quality ◽  
Phase Contrast ◽  
Quality Analysis ◽  
Phase Contrast Imaging ◽  
Phase Image ◽  
Contrast Imaging ◽  
High Quality ◽  
Image Quality Analysis ◽  
X Ray ◽  
Grating Interferometer

Abstract Grating-based x-ray phase-contrast imaging has the potential to enhance image quality and provide inner structure details non-destructively. In this work, using grating-based x-ray phase-contrast imaging system and employing integrating-bucket method, the quantitative expressions of signal-to-noise ratios due to photon statistics and mechanical error are analyzed in detail. Photon statistical noise and mechanical error are the main sources affecting the image noise in x-ray grating interferometry. Integrating-bucket method is a new phase extraction method translated to x-ray grating interferometry; hence, its image quality analysis would be of great importance to get high-quality phase image. The authors’ conclusions provide an alternate method to get high-quality refraction signal using grating interferometer, and hence increases applicability of grating interferometry in preclinical and clinical usage.

Numerical Simulations and Preliminary Experiments of the Principle of X-Ray In-Line Phase-Contrast Imaging

2010 ◽  
Vol 20 (5) ◽  
pp. 1156-1165 ◽  
Author(s):  
Shao-Run GONG ◽  
Feng GAO ◽  
Hong LIU
Keyword(s):  
Numerical Simulations ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

Numerical analysis of shift error in X-ray phase contrast imaging for large field of view

2017 ◽  
Vol 34 (1) ◽  
pp. 8
Author(s):  
Jianheng Huang ◽  
Yaohu Lei ◽  
Xin Liu ◽  
Jinchuan Guo ◽  
Ji Li ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Phase Contrast ◽  
Field Of View ◽  
Phase Contrast Imaging ◽  
Large Field ◽  
Contrast Imaging ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document