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Updated: May 29, 2026

Reservoir Condition Pore-scale Imaging of Multiple Fluid Phases Using X-ray Microtomography
Published on: February 25, 2015
Quantification of a single aggregate inner porosity and pore accessibility using hard X-ray phase-contrast
Pavel Trtik1, Miroslav Soos, Beat Münch
1Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland. pavel.trtik@empa.ch
Abstract:
The 3D structure of three individual aggregates composed of 165 nm polystyrene primary particles is revealed nondestructively by hard X-ray phase-contrast synchrotron nanotomography. Three-dimensional image analysis allows us for the first time to obtain the complex inner porosity of the entire aggregate. It is demonstrated that despite their rather compact structure, characterized by a fractal dimension equal to 2.7, the produced aggregates are still porous, with porosity increasing with its size. Generated pores have diameters from 100 nm to 3 μm and are almost completely interconnected.
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