Pore‐scale contact angle measurements of CO 2 –brine–glass beads system using micro‐focused X‐ray computed tomography

2016 ◽  
Vol 11 (9) ◽  
pp. 524-527 ◽  
Author(s):  
Pengfei Lv ◽  
Yu Liu ◽  
Lanlan Jiang ◽  
Yongchen Song ◽  
Qingxun Huang
Keyword(s):  
Computed Tomography ◽  
Contact Angle ◽  
Glass Beads ◽  
Pore Scale ◽  
X Ray ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
X Ray Computed

scholarly journals Surface Modification of the Alloy Ti-7.5Mo by Anodization for Biomedical Applications

2016 ◽  
Vol 869 ◽  
pp. 913-917 ◽  
Author(s):  
Ana Lucia do Amaral Escada ◽  
Javier Andres Muñoz Chaves ◽  
Ana Paula Rosifini Alves Claro
Keyword(s):  
Contact Angle ◽  
Electron Microscope ◽  
Biomedical Applications ◽  
Anatase Phase ◽  
Ammonium Fluoride ◽  
X Ray ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Simple Surface ◽  
Scanning Electron

The purpose of this study was to evaluate the TiO2 nanotubes growth and the variation in its diameter to improve the surface properties of Ti-7.5Mo to use for biomedical applications. For the nanotubes TiO2 growth, the samples were anodized in glycerol and ammonium fluoride and divided according to the anodizing potential at 5V to 10V and 24 hour time. The surfaces were examined by scanning electron microscope (SEM), X-ray analysis (XRD) and contact angle measurements. The average tube diameter, ranging in size from 13 to 23 nm, was found to increase with increasing anodizing voltage. It was also observed a decrease in contact angle in accordance with the increase in the anodizing potential. The X-ray analysis showed the presence of anatase phase in samples whose potential was 10V and this condition represents a simple surface treatment for Ti-7.5Mo alloy that has high potential for biomedical applications.

scholarly journals Particle based method and X-ray computed tomography for pore-scale flow characterization in VRFB electrodes

2019 ◽  
Vol 16 ◽  
pp. 91-96 ◽  
Author(s):  
Dario Maggiolo ◽  
Filippo Zanini ◽  
Francesco Picano ◽  
Andrea Trovò ◽  
Simone Carmignato ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pore Scale ◽  
X Ray ◽  
Flow Characterization ◽  
X Ray Computed

Effect of electron irradiation on the Crystallite size, Grain size and Contact angle of electrodeposited Cadmium Telluride thin films

2015 ◽  
Vol 8 (2) ◽  
Author(s):  
S. A. Gangawane ◽  
V. P. Malekar ◽  
V. J. Fulari
Keyword(s):  
Thin Films ◽  
Contact Angle ◽  
Grain Size ◽  
Electron Beam Irradiation ◽  
Crystal Size ◽  
X Ray Diffraction ◽  
X Ray ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Cdte Thin Films

In this paper, the effects of electron beam irradiation on the CdTe thin films are studied. The CdTe thin films are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and contact angle measurements for different bath concentration. The thin film layers are subjected to irradiation of 6 MeV electrons. Finally the effect of irradiation is correlated to crystal size, grain size and contact angle measurements of the CdTe thin films

Formation damage evaluation of a sandstone reservoir via pore-scale X-ray computed tomography analysis

2019 ◽  
Vol 183 ◽  
pp. 106356 ◽  
Author(s):  
Yongfei Yang ◽  
Yingwen Li ◽  
Jun Yao ◽  
Kai Zhang ◽  
Stefan Iglauer ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Formation Damage ◽  
Damage Evaluation ◽  
Pore Scale ◽  
X Ray ◽  
X Ray Computed ◽  
Sandstone Reservoir ◽  
Tomography Analysis

scholarly journals The Sensitivity of Estimates of Multiphase Fluid and Solid Properties of Porous Rocks to Image Processing

2019 ◽  
Vol 131 (3) ◽  
pp. 985-1005 ◽  
Author(s):  
Gaetano Garfi ◽  
Cédric M. John ◽  
Steffen Berg ◽  
Samuel Krevor
Keyword(s):  
Image Processing ◽  
Contact Angle ◽  
Surface Area ◽  
Single Phase ◽  
Phase Flow ◽  
Single Phase Flow ◽  
X Ray ◽  
Angle Measurements ◽  
Contact Angle Measurements

AbstractX-ray microcomputed tomography (X-ray μ-CT) is a rapidly advancing technology that has been successfully employed to study flow phenomena in porous media. It offers an alternative approach to core scale experiments for the estimation of traditional petrophysical properties such as porosity and single-phase flow permeability. It can also be used to investigate properties that control multiphase flow such as rock wettability or mineral topology. In most applications, analyses are performed on segmented images obtained employing a specific processing pipeline on the greyscale images. The workflow leading to a segmented image is not straightforward or unique and, for most of the properties of interest, a ground truth is not available. For this reason, it is crucial to understand how image processing choices control properties estimation. In this work, we assess the sensitivity of porosity, permeability, specific surface area, in situ contact angle measurements, fluid–fluid interfacial curvature measurements and mineral composition to processing choices. We compare the results obtained upon the employment of two processing pipelines: non-local means filtering followed by watershed segmentation; segmentation by a manually trained random forest classifier. Single-phase flow permeability, in situ contact angle measurements and mineral-to-pore total surface area are the most sensitive properties, as a result of the sensitivity to processing of the phase boundary identification task. Porosity, interfacial fluid–fluid curvature and specific mineral descriptors are robust to processing. The sensitivity of the property estimates increases with the complexity of its definition and its relationship to boundary shape.

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