Millisecond-order X-ray phase tomography with a fringe-scanning method

Yashiro, Wataru; Kamezawa, Chika; Noda, Daiji; Kajiwara, Kentaro

doi:10.7567/apex.11.122501

Cited by 36 publications

(24 citation statements)

References 48 publications

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“…Time-resolved radioscopy for very short exposure times (down to 100 ps per image) and 1 Mfps repetition rate is possible 47 , but acquisition is limited to very short periods, thus not allowing to follow longer processes continuously. Tomography naturally has been much slower than radioscopy but some proofs of concept on solid samples have shown that acquisition rates of 100 tps are feasible 48 . The state of the art in fast and high-resolution tomographic microscopy (we consider here voxel sizes smaller than 10 µm) applied to dynamically evolving materials is 20−25 tps 40,45,49 .…”

Section: Methodsmentioning

confidence: 99%

Using X-ray tomoscopy to explore the dynamics of foaming metal

et al. 2019

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The complex flow of liquid metal in evolving metallic foams is still poorly understood due to difficulties in studying hot and opaque systems. We apply X-ray tomoscopy –the continuous acquisition of tomographic (3D) images– to clarify key dynamic phenomena in liquid aluminium foam such as nucleation and growth, bubble rearrangements, liquid retraction, coalescence and the rupture of films. Each phenomenon takes place on a typical timescale which we cover by obtaining 208 full tomograms per second over a period of up to one minute. An additional data processing algorithm provides information on the 1 ms scale. Here we show that bubble coalescence is not only caused by gravity-induced drainage, as experiments under weightlessness show, and by stresses caused by foam growth, but also by local pressure peaks caused by the blowing agent. Moreover, details of foam expansion and phenomena such as rupture cascades and film thinning before rupture are quantified. These findings allow us to propose a way to obtain foams with smaller and more equally sized bubbles.

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Section: Methodsmentioning

confidence: 99%

Using X-ray tomoscopy to explore the dynamics of foaming metal

et al. 2019

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“…Although its sensitivity is lower than that of X-ray crystal interferometry (Yoneyama et al, 2006(Yoneyama et al, , 2018Takeda et al, 2012), it has the advantage of using a white synchrotron X-ray beam. Recently, we demonstrated that the application of a fringe scan can improve the spatial resolution and signal-tonoise ratio of the tomograms obtained in grating-based X-ray interferometry, and successfully realized quantitative X-ray phase tomography for a rotating sample with millisecondorder measurement time (Yashiro et al, 2018a). A higher temporal resolution can be realized with a higher sample rotation speed, if an X-ray source with higher-brilliance, such as an undulator or an X-ray free-electron laser, is used (Rack et al, 2014;Olbinado et al, 2017Olbinado et al, , 2018Escauriza et al, 2018;Vagovič et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

High-speed rotating device for X-ray tomography with 10 ms temporal resolution

Mashita

Yashiro

Kaneko³

et al. 2021

J Synchrotron Radiat

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The temporal resolution of X-ray tomography, using a synchrotron radiation X-ray source, has been improved to millisecond order in recent years. However, the sample must be rotated at a speed of more than a few thousand revolutions per minute, which makes it difficult to control the environment around the sample. In this study, a high-speed rotation device has been developed, comprising two synchronized coaxial motors movable along the direction of the axis, which can stretch or compress the rotating sample. Using this device, tomograms of breaking rubber were successfully obtained at a temporal resolution of 10 ms.

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“…Hence, the measurement period of DEI could not be shortened, and time-resolved observations such as in vivo and/or operando observations could not be performed. GXI has a similar limitation, and it was broken using a combination of continuous fast sample rotations and slow grating movements (Kibayashi et al, 2012;Yashiro et al, 2018). In this article, we report on the principles of fast DEI, a DEI system used in feasibility observations and images obtained of biological samples.…”

Section: Introductionmentioning

confidence: 99%

Fast diffraction-enhanced imaging using continuous sample rotation and analyzer crystal scanning

Yoneyama

Lwin

Kawamoto

2020

J Synchrotron Radiat

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Diffraction‐enhanced imaging (DEI) has high sensitivity and a wide dynamic range of density and thus can be used for fine imaging of biological and organic samples that include large differences in density. A fast DEI method composed of continuous fast sample rotations and slow analyzer crystal scanning was developed to shorten the measurement period. Fine sectional images of a biological sample were successfully obtained within a half measurement period of the conventional step‐scanning method while keeping the same exposure time. In addition, a fine three‐dimensional image of a rat tail was obtained with a 375 s measurement period.

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Millisecond-order X-ray phase tomography with a fringe-scanning method

Cited by 36 publications

References 48 publications

Using X-ray tomoscopy to explore the dynamics of foaming metal

Using X-ray tomoscopy to explore the dynamics of foaming metal

High-speed rotating device for X-ray tomography with 10 ms temporal resolution

Fast diffraction-enhanced imaging using continuous sample rotation and analyzer crystal scanning

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