Combined three-dimensional structure and chemistry imaging with nanoscale resolution

Hu, Qinang; Aboustait, Mohammed; Ley, M. Tyler; Hanan, Jay C.; Rose, Volker; Winarski, R.

doi:10.1016/j.actamat.2014.05.050

Cited by 32 publications

(31 citation statements)

References 44 publications

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“…Additional details can be found in Hu et al [31]. Fluorescence was analyzed using the software package MAPS [50].…”

Section: Methodsmentioning

confidence: 99%

“…The nCT and nXRF data are aligned by comparing 2D radiographs to match the particle boundary and areas of uniquely identifiable chemical composition. Additional details about nTACCo are provided in earlier publications [31,44]. …”

Section: Methodsmentioning

confidence: 99%

“…An energy dispersive detector measures the fluorescence X-rays emitted by the sample. By rastering the primary X-ray beam over the sample it is possible to create 2D maps of its composition [31,33,43]. This technique can provide elemental maps with detection limits better than a part per million (ppm) by mass.…”

Section: Introductionmentioning

confidence: 99%

“…As shown in previous publications, the combination of nCT and nXRF can be used to overcome this limitation. When combined in this fashion, the technique has been named nano-tomography assisted chemical correlation (nTACCo) [31]. …”

Section: Introductionmentioning

confidence: 99%

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Direct measurements of 3d structure, chemistry and mass density during the induction period of C3s hydration

Aboustait

Kim

et al. 2016

Cement and Concrete Research

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The reasons for the start and end of the induction period of cement hydration remain topic of controversy. One long-standing hypothesis is that a thin metastable hydrate forming on the surface of cement grains significantly reduces the particle dissolution rate; the eventual disappearance of this layer re-establishes higher dissolution rates at the beginning of the acceleration period. However, the importance, or even the existence, of this metastable layer has been questioned because it cannot be directly detected in most experiments. In this work, a combined analysis using nano-tomography and nano-X-ray fluorescence makes the direct imaging of early hydration products possible. These novel X-ray imaging techniques provide quantitative measurements of 3D structure, chemical composition, and mass density of the hydration products during the induction period. This work does not observe a low density product on the surface of the particle, but does provide insights into the formation of etch pits and the subsequent hydration products that fill them.

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“…Additional details can be found in Hu et al [31]. Fluorescence was analyzed using the software package MAPS [50].…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Direct measurements of 3d structure, chemistry and mass density during the induction period of C3s hydration

Aboustait

Kim

et al. 2016

Cement and Concrete Research

Self Cite

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“…A draft 3D reconstruction could be obtained from these projection scans (Hu et al, 2014). The small number of angular projections limits the available spatial resolution of the 3D reconstruction (Kak & Slaney, 1988).…”

Section: Multi-technique Hierarchical Length-scale Experi-mentioning

confidence: 99%

Optical design and multi-length-scale scanning spectro-microscopy possibilities at the Nanoscopium beamline of Synchrotron Soleil

et al. 2015

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The Nanoscopium 155 m-long beamline of Synchrotron Soleil is dedicated to scanning hard X-ray nanoprobe techniques. Nanoscopium aims to reach 100 nm resolution in the 5-20 keV energy range for routine user experiments. The beamline design tackles the tight stability requirements of such a scanning nanoprobe by creating an overfilled secondary source, implementing all horizontally reflecting main beamline optics, applying high mechanical stability equipment and constructing a dedicated high-stability building envelope. Multitechnique scanning imaging and tomography including X-ray fluorescence spectrometry and spectro-microscopy, absorption, differential phase and darkfield contrasts are implemented at the beamline in order to provide simultaneous information on the elemental distribution, speciation and sample morphology. This paper describes the optical concept and the first measured performance of the Nanoscopium beamline followed by the hierarchical lengthscale multi-technique imaging experiments performed with dwell times down to 3 ms per pixel.

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Nanoscale characterization of cementitious composites

Özçelikci

İlcan

Yıldırım

et al. 2022

Recent Advances in Nano-Tailored Multi-Functional Cementitious Composites

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Combined three-dimensional structure and chemistry imaging with nanoscale resolution

Cited by 32 publications

References 44 publications

Direct measurements of 3d structure, chemistry and mass density during the induction period of C3s hydration

Direct measurements of 3d structure, chemistry and mass density during the induction period of C3s hydration

Optical design and multi-length-scale scanning spectro-microscopy possibilities at the Nanoscopium beamline of Synchrotron Soleil

Nanoscale characterization of cementitious composites

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