3D imaging of clay minerals inside sandstone: pushing the spatial resolution limits using ptychographic tomographyReportar como inadecuado




3D imaging of clay minerals inside sandstone: pushing the spatial resolution limits using ptychographic tomography - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

(2015)Tomography of Materials and Structures, 2nd International conference, Proceedings.p.661-664 Mark abstract Characterization of microporous, clay-sized particles in natural stone is essential for the understanding of their dynamics. These processes are importand in the fields of oil and gas, groundwater, building stone weathering and soil science. Methods such as X-ray micro-computed tomography is an excellent tool to study features larger than or just under 1 μm, but below the 400 nm limit, the technique falls short. Although destructive methods exists (e.g. FIB/SEM), non-destructive imaging at these very high resolutions has been impossible, until recent developments at synchrotron beam lines.In this study, we use ptychographic tomography at the cSAXS beam line of the PSI in Switzerland, for imaging of clay microstructure at resolutions down to 45 nm, which is the first application of ptychographic tomography for geological samples to our knowledge. During these experiments, relative humidity of the sample’s environment was controlled, in order to asses the influence of R.H. on the analyzed clay minerals. Based on these images, quantitative data on mineral content, porosity, connectivity and behavior under changing environmental conditions of clay mineral clusters was acquired.

Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-7077391



Autor: Wesley De Boever, Hannelore Derluyn, Jeroen Van Stappen , Jan Dewanckele, Tom Bultreys , Matthieu Boone , Thomas De Schryver , Tim

Fuente: https://biblio.ugent.be/publication/7077391



DESCARGAR PDF




Documentos relacionados