X-ray Microcomputed Tomography (µCT) for mineral characterization: A review of data analysis methods

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Marco E. Ciriotti
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Iscritto il: ven 25 giu, 2004 11:31
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X-ray Microcomputed Tomography (µCT) for mineral characterization: A review of data analysis methods

Messaggio da Marco E. Ciriotti » sab 16 mar, 2019 12:29

Referenza:
▪ Istiadi Guntoro, P., Ghorbani, Y., Koch, P.-H., Rosenkranz, J. (2019): X-ray Microcomputed Tomography (µCT) for Mineral Characterization: A Review of Data Analysis Methods. Minerals, 9, 183; https://doi.org/10.3390/min9030183

Abstract
The main advantage of X-ray microcomputed tomography (µCT) as a non-destructive imaging tool lies in its ability to analyze the three-dimensional (3D) interior of a sample, therefore eliminating the stereological error exhibited in conventional two-dimensional (2D) image analysis. Coupled with the correct data analysis methods, µCT allows extraction of textural and mineralogical information from ore samples. This study provides a comprehensive overview on the available and potentially useful data analysis methods for processing 3D datasets acquired with laboratory µCT systems. Our study indicates that there is a rapid development of new techniques and algorithms capable of processing µCT datasets, but application of such techniques is often sample-specific. Several methods that have been successfully implemented for other similar materials (soils, aggregates, rocks) were also found to have the potential to be applied in mineral characterization. The main challenge in establishing a µCT system as a mineral characterization tool lies in the computational expenses of processing the large 3D dataset. Additionally, since most of the µCT dataset is based on the attenuation of the minerals, the presence of minerals with similar attenuations limits the capability of µCT in mineral segmentation. Further development on the data processing workflow is needed to accelerate the breakthrough of µCT as an analytical tool in mineral characterization
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

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Marco E. Ciriotti
Messaggi: 25818
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
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Re: X-ray Microcomputed Tomography (µCT) for mineral characterization: A review of data analysis methods

Messaggio da Marco E. Ciriotti » gio 25 lug, 2019 9:42

Referenze:
▪ Kolb, U., Krysiak, Y., Plana-Ruiz, S. (2019): Automated electron diffraction tomography – development and applications. Acta Crystallographica, B75, (in press).

Synopsis:
Electron diffraction tomography, a potential method for structure analysis of nanocrystals, and, in more detail, the strategies to use automated diffraction tomography (ADT) technique are described. Examples of ADT application are discussed according to the material class.


▪ Eggeman, A.S. (2019): Scanning transmission electron diffraction methods. Acta Crystallographica, B75, (in press).

Synopsis:
Methods and applications for crystallographic mapping using scanning electron diffraction in the transmission electron microscope are reviewed.
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

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Marco E. Ciriotti
Messaggi: 25818
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Re: X-ray Microcomputed Tomography (µCT) for mineral characterization: A review of data analysis methods

Messaggio da Marco E. Ciriotti » sab 10 ago, 2019 19:01

Referenze:
▪ Kolb, U., Krysiak, Y., Plana-Ruiz, S. (2019): Automated electron diffraction tomography – development and applications. Acta Crystallographica, B75, 463-474.

Abstract:
Electron diffraction tomography (EDT) has gained increasing interest, starting with the development of automated electron diffraction tomography (ADT) which enables the collection of three-dimensional electron diffraction data from nano-sized crystals suitable for ab initio structure analysis. A basic description of the ADT method, nowadays recognized as a reliable and established method, as well as its special features and general applicability to different transmission electron microscopes is provided. In addition, the usability of ADT for crystal structure analysis of single nano-sized crystals with and without special crystallographic features, such as twinning, modulations and disorder is demonstrated.

▪ Eggeman, A.S. (2019): Scanning transmission electron diffraction methods. Acta Crystallographica, B75, 475-484.

Abstract:
Scanning diffraction experiments are approaches that take advantage of many of the recent advances in technology (e.g. computer control, detectors, data storage and analysis) for the transmission electron microscope, allowing the crystal structure of materials to be studied with extremely high precision at local positions across large areas of sample. The ability to map the changing crystal structure makes such experiments a powerful tool for the study of microstructure in all its forms from grains and orientations, to secondary phases and interfaces, strain and defects. This review will introduce some of the fundamental concepts behind the breadth of the technique and showcase some of the recent developments in experiment development and applications to materials.
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

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