Pathways to sub-10nm x-ray imaging using zone plate lens

Yun, Wenbing; Feser, Michael; Lyon, Alan; Duewer, Frederick; Wang, Yuxin

doi:10.1117/12.568199

Cited by 4 publications

(2 citation statements)

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“…As the filtered back-projection reconstruction method does not perform well with such coarse angular spacing, algebraic reconstruction techniques (ART) are typically used (see 'Novel reconstruction strategies' section). Given that the exposure time is inversely proportional to the fourth power of the spatial resolution, and noting that their 30-nm FZP system takes minutes to acquire a single image, Yun et al 74 suggest that X-ray tomography at resolutions significantly better than 30 nm is likely to be confined to synchrotron sources unless new lab. X-ray sources with greater brightness can be developed.…”

Section: Very High Resolution Imagingmentioning

confidence: 99%

Quantitative X-ray tomography

Maire¹,

Withers²

2013

International Materials Reviews

1,088

601

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X-ray computer tomography (CT) is fast becoming an accepted tool within the materials science community for the acquisition of 3D images. Here the authors review the current state of the art as CT transforms from a qualitative diagnostic tool to a quantitative one. Our review considers first the image acquisition process, including the use of iterative reconstruction strategies suited to specific segmentation tasks and emerging methods that provide more insight (e.g. fast and high resolution imaging, crystallite (grain) imaging) than conventional attenuation based tomography. Methods and shortcomings of CT are examined for the quantification of 3D volumetric data to extract key topological parameters such as phase fractions, phase contiguity, and damage levels as well as density variations. As a non-destructive technique, CT is an ideal means of following structural development over time via time lapse sequences of 3D images (sometimes called 3D movies or 4D imaging). This includes information needed to optimise manufacturing processes, for example sintering or solidification, or to highlight the proclivity of specific degradation processes under service conditions, such as intergranular corrosion or fatigue crack growth. Besides the repeated application of static 3D image quantification to track such changes, digital volume correlation (DVC) and particle tracking (PT) methods are enabling the mapping of deformation in 3D over time. Finally the use of CT images is considered as the starting point for numerical modelling based on realistic microstructures, for example to predict flow through porous materials, the crystalline deformation of polycrystalline aggregates or the mechanical properties of composite materials.

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Section: Very High Resolution Imagingmentioning

confidence: 99%

Quantitative X-ray tomography

Maire¹,

Withers²

2013

International Materials Reviews

1,088

601

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“…By standard propagation of error methods a standard error is assigned to each radius. 1 C and 2 C (Figs. 4 and 5) as the slopes of the corresponding linear dependences.…”

Section: Reduction To An Empirical and Intuitive Tuning Methodsmentioning

confidence: 99%

Optimal tuning and calibration of bendable mirrors with slope-measuring profilers

et al. 2009

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We describe a technique to optimally tune and calibrate bendable x-ray optics for submicron focusing. The focusing is divided between two elliptically cylindrical reflecting elements, a Kirkpatrick-Baez (KB) pair. Each optic is shaped by applying unequal bending couples to each end of a flat mirror. The developed technique allows optimal tuning of these systems using surface slope data obtained with a slope measuring instrument, the long trace profiler (LTP). Due to the near linearity of the problem, the minimal set of data necessary for the tuning of each bender, consists of only three slope traces measured before and after a single adjustment of each bending couple. The data are analyzed with software realizing a method of regression analysis with experimentally found characteristic functions of the benders. The resulting approximation to the functional dependence of the desired shape provides nearly final settings. Moreover, the characteristic functions of the benders found in the course of tuning, can be used for retuning to a new desired shape without removal from the beamline and re-measuring. We perform a ray trace, using profiler data for the finally tuned optics, predicting the performance to be expected during use of the optics on the beamline.

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Hard X-Ray Microoptics

Snigirev

Springer Series in Optical Science

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Pathways to sub-10nm x-ray imaging using zone plate lens

Cited by 4 publications

References 0 publications

Quantitative X-ray tomography

Quantitative X-ray tomography

Optimal tuning and calibration of bendable mirrors with slope-measuring profilers

Hard X-Ray Microoptics

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