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1. The Complexity of Porous Media Flow Characterized in a Microfluidic Model Based on Confocal Laser Scanning Microscopy and Micro-PIV

Author

de Winter, D.A.M., Weishaupt, K., Scheller, S., Frey, S., Raoof, A., Hassanizadeh, S. M., Helmig, R., de Winter, D.A.M., Weishaupt, K., Scheller, S., Frey, S., Raoof, A., Hassanizadeh, S. M., and Helmig, R.

Abstract

Abstract: In this study, the complexity of a steady-state flow through porous media is revealed using confocal laser scanning microscopy (CLSM). Micro-particle image velocimetry (micro-PIV) is applied to construct movies of colloidal particles. The calculated velocity vector fields from images are further utilized to obtain laminar flow streamlines. Fluid flow through a single straight channel is used to confirm that quantitative CLSM measurements can be conducted. Next, the coupling between the flow in a channel and the movement within an intersecting dead-end region is studied. Quantitative CLSM measurements confirm the numerically determined coupling parameter from earlier work of the authors. The fluid flow complexity is demonstrated using a porous medium consisting of a regular grid of pores in contact with a flowing fluid channel. The porous media structure was further used as the simulation domain for numerical modeling. Both the simulation, based on solving Stokes equations, and the experimental data show presence of non-trivial streamline trajectories across the pore structures. In view of the results, we argue that the hydrodynamic mixing is a combination of non-trivial streamline routing and Brownian motion by pore-scale diffusion. The results provide insight into challenges in upscaling hydrodynamic dispersion from pore scale to representative elementary volume (REV) scale. Furthermore, the successful quantitative validation of CLSM-based data from a microfluidic model fed by an electrical syringe pump provided a valuable benchmark for qualitative validation of computer simulation results. Graphic Abstract: [Figure not available: see fulltext.].

Published
2021

3. Erratum: Publisher Correction: 3D test sample for the calibration and quality control of stimulated emission depletion (STED) and confocal microscopes (Communications biology (2021) 4 1 (909))

Author

van der Wee, Ernest B., Fokkema, Jantina, Kennedy, Chris L., del Pozo, Marc, de Winter, D.A.M., Speets, Peter N.A., Gerritsen, Hans C., van Blaaderen, Alfons, van der Wee, Ernest B., Fokkema, Jantina, Kennedy, Chris L., del Pozo, Marc, de Winter, D.A.M., Speets, Peter N.A., Gerritsen, Hans C., and van Blaaderen, Alfons

Published
2021

4. 3D test sample for the calibration and quality control of stimulated emission depletion (STED) and confocal microscopes

Author

van der Wee, Ernest B., Fokkema, Jantina, Kennedy, Chris, del Pozo Puig, Marc, de Winter, D.A.M., Speets, Peter N.A., Gerritsen, Hans C., van Blaaderen, Alfons, van der Wee, Ernest B., Fokkema, Jantina, Kennedy, Chris, del Pozo Puig, Marc, de Winter, D.A.M., Speets, Peter N.A., Gerritsen, Hans C., and van Blaaderen, Alfons

Abstract

Multiple samples are required to monitor and optimize the quality and reliability of quantitative measurements of stimulated emission depletion (STED) and confocal microscopes. Here, we present a single sample to calibrate these microscopes, align their laser beams and measure their point spread function (PSF) in 3D. The sample is composed of a refractive index matched colloidal crystal of silica beads with fluorescent and gold cores. The microscopes can be calibrated in three dimensions using the periodicity of the crystal; the alignment of the laser beams can be checked using the reflection of the gold cores; and the PSF can be measured at multiple positions and depths using the fluorescent cores. It is demonstrated how this sample can be used to visualize and improve the quality of STED and confocal microscopy images. The sample is adjustable to meet the requirements of different NA objectives and microscopy techniques and additionally can be used to evaluate refractive index mismatches as a function of depth quantitatively

Published
2021

7. Erratum: Publisher Correction: 3D test sample for the calibration and quality control of stimulated emission depletion (STED) and confocal microscopes (Communications biology (2021) 4 1 (909))

Author

van der Wee, Ernest B., Fokkema, Jantina, Kennedy, Chris L., del Pozo, Marc, de Winter, D.A.M., Speets, Peter N.A., Gerritsen, Hans C., van Blaaderen, Alfons, van der Wee, Ernest B., Fokkema, Jantina, Kennedy, Chris L., del Pozo, Marc, de Winter, D.A.M., Speets, Peter N.A., Gerritsen, Hans C., and van Blaaderen, Alfons

Published
2021

8. 3D test sample for the calibration and quality control of stimulated emission depletion (STED) and confocal microscopes

Author

van der Wee, Ernest B., Fokkema, Jantina, Kennedy, Chris, del Pozo Puig, Marc, de Winter, D.A.M., Speets, Peter N.A., Gerritsen, Hans C., van Blaaderen, Alfons, van der Wee, Ernest B., Fokkema, Jantina, Kennedy, Chris, del Pozo Puig, Marc, de Winter, D.A.M., Speets, Peter N.A., Gerritsen, Hans C., and van Blaaderen, Alfons

Abstract

Multiple samples are required to monitor and optimize the quality and reliability of quantitative measurements of stimulated emission depletion (STED) and confocal microscopes. Here, we present a single sample to calibrate these microscopes, align their laser beams and measure their point spread function (PSF) in 3D. The sample is composed of a refractive index matched colloidal crystal of silica beads with fluorescent and gold cores. The microscopes can be calibrated in three dimensions using the periodicity of the crystal; the alignment of the laser beams can be checked using the reflection of the gold cores; and the PSF can be measured at multiple positions and depths using the fluorescent cores. It is demonstrated how this sample can be used to visualize and improve the quality of STED and confocal microscopy images. The sample is adjustable to meet the requirements of different NA objectives and microscopy techniques and additionally can be used to evaluate refractive index mismatches as a function of depth quantitatively

Published
2021

9. Predicting intraparticle diffusivity as function of stationary phase characteristics in preparative chromatography

Author

Schultze-Jena, A., Boon, M.A., de Winter, D.A.M., Bussmann, P.J.Th, Janssen, A.E.M., van der Padt, A., Schultze-Jena, A., Boon, M.A., de Winter, D.A.M., Bussmann, P.J.Th, Janssen, A.E.M., and van der Padt, A.

Abstract

Diffusion inside pores is the rate limiting step in many preparative chromatographic separations and a key parameter for process design in weak interaction aqueous chromatographic separations employed in food and bio processing. This work aims at relating diffusion inside porous networks to properties of stationary phase and of diffusing molecules. Intraparticle diffusivities were determined for eight small molecules in nine different stationary phases made from three different backbone materials. Measured intraparticle diffusivities were compared to the predictive capability of the correlation by Mackie and Meares and the parallel pore model. All stationary phases were analyzed for their porosity, apparent pore size distribution and tortuosity, which are input parameters for the models. The parallel pore model provides understanding of the occurring phenomena, but the input parameters were difficult to determine experimentally. The model predictions of intraparticle diffusion were of limited accuracy. We show that prediction can be improved when combining the model of Mackie and Meares with the fraction of accessible pore volume. The accessible pore volume fraction can be determined from inverse size exclusion chromatographic measurements. Future work should further challenge the improved model, specifically widening the applicability to greater accessible pore fractions (> 0.7) with corresponding higher intraparticle diffusivities (Dp/Dm > 0.2). A database of intraparticle diffusion and stationary phase pore property measurements is supplied, to contribute to general understanding of the relationship between intraparticle diffusion and pore properties.

Published
2020

16. Predicting intraparticle diffusivity as function of stationary phase characteristics in preparative chromatography

Author

Schultze-Jena, A., Boon, M.A., de Winter, D.A.M., Bussmann, P.J.T., Janssen, A.E.M., van der Padt, A., Schultze-Jena, A., Boon, M.A., de Winter, D.A.M., Bussmann, P.J.T., Janssen, A.E.M., and van der Padt, A.

Abstract

Diffusion inside pores is the rate limiting step in many preparative chromatographic separations and a key parameter for process design in weak interaction aqueous chromatographic separations employed in food and bio processing. This work aims at relating diffusion inside porous networks to properties of stationary phase and of diffusing molecules. Intraparticle diffusivities were determined for eight small molecules in nine different stationary phases made from three different backbone materials. Measured intraparticle diffusivities were compared to the predictive capability of the correlation by Mackie and Meares and the parallel pore model. All stationary phases were analyzed for their porosity, apparent pore size distribution and tortuosity, which are input parameters for the models. The parallel pore model provides understanding of the occurring phenomena, but the input parameters were difficult to determine experimentally. The model predictions of intraparticle diffusion were of limited accuracy. We show that prediction can be improved when combining the model of Mackie and Meares with the fraction of accessible pore volume. The accessible pore volume fraction can be determined from inverse size exclusion chromatographic measurements. Future work should further challenge the improved model, specifically widening the applicability to greater accessible pore fractions (> 0.7) with corresponding higher intraparticle diffusivities (Dp/Dm > 0.2). A database of intraparticle diffusion and stationary phase pore property measurements is supplied, to contribute to general understanding of the relationship between intraparticle diffusion and pore properties.

Published
2020

17. Characterizing the hydraulic properties of a paper coating layer using FIB-SEM tomography and 3D pore-scale modeling

Author

Aslannejad, H., Hassanizadeh, S.M., Raoof, A., de Winter, D.A.M., Tomozeu, N., van Genuchten, M.T., Aslannejad, H., Hassanizadeh, S.M., Raoof, A., de Winter, D.A.M., Tomozeu, N., and van Genuchten, M.T.

Abstract

Paper used in the printing industry generally contains a relatively thin porous coating covering a thicker fibrous base layer. The three-dimensional pore structure of coatings has a major effect on fluid flow patterns inside the paper medium. Understanding and quantifying the flow properties of thin coating layers is hence crucial. Pore spaces within the coating have an average size of about 180 nm. We used scanning electron microscopy combined with focused ion beam (FIB-SEM) to visualize the nano-scale pore structure of the paper coating layer. Post-processing of the FIB-SEM images allowed us to reconstruct the three-dimensional pore space of the coating. The 3D FIB-SEM images were analyzed in detail to obtain pore size distribution and porosity value. The permeability was estimated using the Geo-Dict software, based on solutions of the Stokes equation. By determining the porosity and the permeability for increasingly larger domain sizes, we estimated the size of a representative elementary volume (REV) for the coating layer to be 60 µm3, which is well within the volume analyzed by FIB-SEM. The estimated porosity and permeability of the REV domain were 0.34 and 0.09 mDarcy, respectively, relatively close to previous literature values for coatings ((Patrick A. Gane et al., 1996), (Alam et al., 2009)). Using the pore morphology method, the capillary pressure-saturation (Pc-S) and relative permeability curves of the REV domain could be constructed next. The Pc-S curves showed that the coating has a high air entry suction, which is very favorable for printing in that an ink will invade the coating as soon as it applied to the coating. Our results are essential for macroscale modelling of ink penetration into a coating layer during inkjet printing. Macroscopic models can be valuable tools for optimization of the penetration depth and the spreading of ink on and within paper substrates.

Published
2017

18. Fluid flow from matrix to fractures in Early Jurassic shales

Author

Structural geology & tectonics, Structural geology and EM, Experimental rock deformation, Houben, M.E., Hardebol, N.J., Barnhoorn, A., Boersma, Quinten, Carone, A., Liu, Y., de Winter, D.A.M., Peach, C.J., Drury, M.R., Structural geology & tectonics, Structural geology and EM, Experimental rock deformation, Houben, M.E., Hardebol, N.J., Barnhoorn, A., Boersma, Quinten, Carone, A., Liu, Y., de Winter, D.A.M., Peach, C.J., and Drury, M.R.

Published
2017

19. Characterizing the hydraulic properties of a paper coating layer using FIB-SEM tomography and 3D pore-scale modeling

Author

Hydrogeology, Structural geology and EM, ERC-PORSCI: A new paradigm in modelling flow and transport in porous media: revisiting foundations of porous media science, Environmental hydrogeology, Aslannejad, H., Hassanizadeh, S.M., Raoof, A., de Winter, D.A.M., Tomozeu, N., van Genuchten, M.T., Hydrogeology, Structural geology and EM, ERC-PORSCI: A new paradigm in modelling flow and transport in porous media: revisiting foundations of porous media science, Environmental hydrogeology, Aslannejad, H., Hassanizadeh, S.M., Raoof, A., de Winter, D.A.M., Tomozeu, N., and van Genuchten, M.T.

Published
2017

20. Fluid flow from matrix to fractures in Early Jurassic shales

Author

Structural geology & tectonics, Structural geology and EM, Experimental rock deformation, Houben, M.E., Hardebol, N.J., Barnhoorn, A., Boersma, Quinten, Carone, A., Liu, Y., de Winter, D.A.M., Peach, C.J., Drury, M.R., Structural geology & tectonics, Structural geology and EM, Experimental rock deformation, Houben, M.E., Hardebol, N.J., Barnhoorn, A., Boersma, Quinten, Carone, A., Liu, Y., de Winter, D.A.M., Peach, C.J., and Drury, M.R.

Published
2017

21. Characterizing the hydraulic properties of a paper coating layer using FIB-SEM tomography and 3D pore-scale modeling

Author

Hydrogeology, Structural geology and EM, ERC-PORSCI: A new paradigm in modelling flow and transport in porous media: revisiting foundations of porous media science, Environmental hydrogeology, Aslannejad, H., Hassanizadeh, S.M., Raoof, A., de Winter, D.A.M., Tomozeu, N., van Genuchten, M.T., Hydrogeology, Structural geology and EM, ERC-PORSCI: A new paradigm in modelling flow and transport in porous media: revisiting foundations of porous media science, Environmental hydrogeology, Aslannejad, H., Hassanizadeh, S.M., Raoof, A., de Winter, D.A.M., Tomozeu, N., and van Genuchten, M.T.

Published
2017

22. Fluid flow from matrix to fractures in Early Jurassic shales

Author

Structural geology & tectonics, Structural geology and EM, Experimental rock deformation, Houben, M.E., Hardebol, N.J., Barnhoorn, A., Boersma, Quinten, Carone, A., Liu, Y., de Winter, D.A.M., Peach, C.J., Drury, M.R., Structural geology & tectonics, Structural geology and EM, Experimental rock deformation, Houben, M.E., Hardebol, N.J., Barnhoorn, A., Boersma, Quinten, Carone, A., Liu, Y., de Winter, D.A.M., Peach, C.J., and Drury, M.R.

Published
2017

23. Characterizing the hydraulic properties of a paper coating layer using FIB-SEM tomography and 3D pore-scale modeling

Author

Hydrogeology, Structural geology and EM, ERC-PORSCI: A new paradigm in modelling flow and transport in porous media: revisiting foundations of porous media science, Environmental hydrogeology, Aslannejad, H., Hassanizadeh, S.M., Raoof, A., de Winter, D.A.M., Tomozeu, N., van Genuchten, M.T., Hydrogeology, Structural geology and EM, ERC-PORSCI: A new paradigm in modelling flow and transport in porous media: revisiting foundations of porous media science, Environmental hydrogeology, Aslannejad, H., Hassanizadeh, S.M., Raoof, A., de Winter, D.A.M., Tomozeu, N., and van Genuchten, M.T.

Published
2017

24. Repulsive van der Waals forces enable Pickering emulsions with non-touching colloids

Author

Elbers, Nina, van der Hoeven, Jessi, de Winter, D.A.M., Schneijdenberg, C.T.W.M., van der Linden, M.N., Filion, L.C., van Blaaderen, A., Elbers, Nina, van der Hoeven, Jessi, de Winter, D.A.M., Schneijdenberg, C.T.W.M., van der Linden, M.N., Filion, L.C., and van Blaaderen, A.

Abstract

Emulsions stabilized by solid particles, called Pickering emulsions, offer promising applications in drug delivery, cosmetics, food science and the manufacturing of porous materials. This potential stems from their high stability against coalescence and ‘surfactant-free’ nature. Generally, Pickering emulsions require that the solid particles are wetted by both phases and as a result, the adsorption free energy is often large with respect to the thermal energy (kBT). Here we provide the first experimental proof for an alternative scenario: non-touching (effectively non-wetting), charged, particles that are completely immersed in the oil phase through a balance of charge induced attractions and repulsions caused by van der Waals forces. These particles nonetheless stabilize the emulsion. The main advantage of this novel adsorption mechanism is that these particles can easily be detached from the interface simply by adding salt. This not only makes the finding fundamentally of interest, but also enables a triggered de-emulsification and particle recovery, which is useful in fields like enhanced oil recovery, heterogeneous catalysis, and emulsion polymerization.

Published
2016

25. Repulsive van der Waals forces enable Pickering emulsions with non-touching colloids

Author

Structural geology and EM, Sub Soft Condensed Matter, Soft Condensed Matter and Biophysics, Structural geology & tectonics, Elbers, Nina, van der Hoeven, Jessi, de Winter, D.A.M., Schneijdenberg, C.T.W.M., van der Linden, M.N., Filion, L.C., van Blaaderen, A., Structural geology and EM, Sub Soft Condensed Matter, Soft Condensed Matter and Biophysics, Structural geology & tectonics, Elbers, Nina, van der Hoeven, Jessi, de Winter, D.A.M., Schneijdenberg, C.T.W.M., van der Linden, M.N., Filion, L.C., and van Blaaderen, A.

Published
2016

26. Repulsive van der Waals forces enable Pickering emulsions with non-touching colloids

Author

Structural geology and EM, Sub Soft Condensed Matter, Soft Condensed Matter and Biophysics, Structural geology & tectonics, Elbers, Nina, van der Hoeven, Jessi, de Winter, D.A.M., Schneijdenberg, C.T.W.M., van der Linden, M.N., Filion, L.C., van Blaaderen, A., Structural geology and EM, Sub Soft Condensed Matter, Soft Condensed Matter and Biophysics, Structural geology & tectonics, Elbers, Nina, van der Hoeven, Jessi, de Winter, D.A.M., Schneijdenberg, C.T.W.M., van der Linden, M.N., Filion, L.C., and van Blaaderen, A.

Published
2016

27. Repulsive van der Waals forces enable Pickering emulsions with non-touching colloids

Author

Soft Condensed Matter and Biophysics, Structural geology & tectonics, Structural geology and EM, Sub Soft Condensed Matter, Elbers, Nina, van der Hoeven, Jessi, de Winter, D.A.M., Schneijdenberg, C.T.W.M., van der Linden, M.N., Filion, L.C., van Blaaderen, A., Soft Condensed Matter and Biophysics, Structural geology & tectonics, Structural geology and EM, Sub Soft Condensed Matter, Elbers, Nina, van der Hoeven, Jessi, de Winter, D.A.M., Schneijdenberg, C.T.W.M., van der Linden, M.N., Filion, L.C., and van Blaaderen, A.

Published
2016

28. Focused Ion Beam - Scanning Electron Microscopy Applied to Electrically Insulating Materials

Author

de Winter, D.A.M. and de Winter, D.A.M.

Abstract

The Focused Ion Beam – Scanning Electron Microscope (FIB-SEM) is a versatile instrument originating from the semiconductor industry. The FIB is used to produce cross sections of pre-defined locations of interest, which are imaged and analyzed with the SEM. Repeated FIB cross sectioning and subsequent SEM imaging –a process called FIB-SEM tomography– results in a full three-dimensional analysis of the structure of interest, allowing for the 3D reconstruction of cellular materials or porous media. In recent years, the capabilities of the FIB-SEM have attracted a considerable amount of attention from various scientific disciplines. This PhD Thesis presents a survey across samples from Life Sciences, Earth Sciences and Material Sciences, exploring and validating the application of the FIB-SEM instrument to scientific questions from the three disciplines. The common denominator of the various samples under investigation is their electrically insulating nature, requiring additional care in dealing with the samples in the microscope. Life Sciences Electron Microscopy (EM) in Life Sciences can be split in room temperature (cells are dehydrated, optionally embedded) and cryo applications. A contribution is made in both fields. Room temperature FIB-SEM tomography is demonstrated on cells embedded in a resin. The cellular membranes are stained with heavy metals, providing sufficient contrast in Back Scattered Electron (BSE) mode. It is shown that the distribution of endoplasmic reticulum and the mitochondria can be reconstructed in three dimensions. As for cryo-EM, a major quest in Life Sciences is the preparation of artifact-free thick cryo-sections or lamellas (>200 nm) for cryo-Transmission Electron Microscopy (TEM) tomography. A dedicated workflow has been developed to produce such thick cryo-sections with the FIB, while is SEM is used to check the quality of the sections in-situ. Earth Sciences The importance of 3D reconstructions over 2D imaging is demonstrated with a

Published
2015

32. Wetting behavior of olivine; a 2D and 3D analysis of melt pocket geometries

Author

Aben, S.F., Drury, M.R. (Thesis Advisor), de Winter, D.A.M., Aben, S.F., Drury, M.R. (Thesis Advisor), and de Winter, D.A.M.

Abstract

The characteristics of the distribution of melt through peridotites can strongly influence melt migration, as well as properties like seismic attenuation and mechanical strength, which are of major importance in many geological studies of the Earth’s mantle. Melt distribution can be characterized by the wetting angle or dihedral angle, which quantifies the amount of protrusion of melt between individual melt pockets. Conventional studies of dihedral angles rely on the estimation of 3D dihedral angles from the distribution of 2D apparent angles. However, there are few studies on the relationship between the true dihedral angle and apparent angle distributions. Dihedral angle analyses have been performed on samples containing 95% forsterite (Mg2SiO4) and 5% enstatite (MgSiO3) to gain more insight of the dihedral angle in olivine, which is a major constituent of the Earth’s mantle. Imaged cross sections through true dihedral angles in different orientations result in images containing apparent dihedral angles in conventional data sets. To investigate the validity of different statistical approaches of the true dihedral angle, as well as the effects of faceting and melt content on the dihedral angle, a new method has been developed for both true dihedral angle and apparent dihedral angle analysis compatible with FIB-SEM imaging. Usage of the new method aims to reduce errors caused by magnification and resolution limitations as well as influences of arbitrary elements present in conventional methods. Accuracy is increased to up to 1-2° for apparent dihedral angles and ~3° for true dihedral angles. An arbitrary set of cross sections was created for the analysis of apparent angles. The dihedral angle estimated from the mean of these apparent angles is in good agreement with the true dihedral angle measured in the FIB-SEM datasets. Distributions of apparent angles suggest that faceting and the presence of zero-degree dihedral angles between grains have a major influence on

Published
2014

33. Frictional properties and microstructure of calcite-rich fault gouges sheared at sub-seismic sliding velocities

Author

ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, ISES: New frontiers in focused Ion beam, Experimental rock deformation, Sub Biomolecular Imaging, Structural geology and EM, Verberne, B.A., Spiers, C.J., Niemeijer, A.R., de Bresser, J.H.P., de Winter, D.A.M., Plümper, O., ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, ISES: New frontiers in focused Ion beam, Experimental rock deformation, Sub Biomolecular Imaging, Structural geology and EM, Verberne, B.A., Spiers, C.J., Niemeijer, A.R., de Bresser, J.H.P., de Winter, D.A.M., and Plümper, O.

Published
2014

34. Frictional properties and microstructure of calcite-rich fault gouges sheared at sub-seismic sliding velocities

Author

ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, ISES: New frontiers in focused Ion beam, Experimental rock deformation, Sub Biomolecular Imaging, Structural geology and EM, Verberne, B.A., Spiers, C.J., Niemeijer, A.R., de Bresser, J.H.P., de Winter, D.A.M., Plümper, O., ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, ISES: New frontiers in focused Ion beam, Experimental rock deformation, Sub Biomolecular Imaging, Structural geology and EM, Verberne, B.A., Spiers, C.J., Niemeijer, A.R., de Bresser, J.H.P., de Winter, D.A.M., and Plümper, O.

Published
2014

35. Frictional properties and microstructure of calcite-rich fault gouges sheared at sub-seismic sliding velocities

Author

ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, ISES: New frontiers in focused Ion beam, Experimental rock deformation, Sub Biomolecular Imaging, Structural geology and EM, Verberne, B.A., Spiers, C.J., Niemeijer, A.R., de Bresser, J.H.P., de Winter, D.A.M., Plümper, O., ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, ISES: New frontiers in focused Ion beam, Experimental rock deformation, Sub Biomolecular Imaging, Structural geology and EM, Verberne, B.A., Spiers, C.J., Niemeijer, A.R., de Bresser, J.H.P., de Winter, D.A.M., and Plümper, O.

Published
2014

36. Wetting behavior of olivine; a 2D and 3D analysis of melt pocket geometries

Author

Aben, S.F., Drury, M.R. (Thesis Advisor), de Winter, D.A.M., Aben, S.F., Drury, M.R. (Thesis Advisor), and de Winter, D.A.M.

Abstract

The characteristics of the distribution of melt through peridotites can strongly influence melt migration, as well as properties like seismic attenuation and mechanical strength, which are of major importance in many geological studies of the Earth’s mantle. Melt distribution can be characterized by the wetting angle or dihedral angle, which quantifies the amount of protrusion of melt between individual melt pockets. Conventional studies of dihedral angles rely on the estimation of 3D dihedral angles from the distribution of 2D apparent angles. However, there are few studies on the relationship between the true dihedral angle and apparent angle distributions. Dihedral angle analyses have been performed on samples containing 95% forsterite (Mg2SiO4) and 5% enstatite (MgSiO3) to gain more insight of the dihedral angle in olivine, which is a major constituent of the Earth’s mantle. Imaged cross sections through true dihedral angles in different orientations result in images containing apparent dihedral angles in conventional data sets. To investigate the validity of different statistical approaches of the true dihedral angle, as well as the effects of faceting and melt content on the dihedral angle, a new method has been developed for both true dihedral angle and apparent dihedral angle analysis compatible with FIB-SEM imaging. Usage of the new method aims to reduce errors caused by magnification and resolution limitations as well as influences of arbitrary elements present in conventional methods. Accuracy is increased to up to 1-2° for apparent dihedral angles and ~3° for true dihedral angles. An arbitrary set of cross sections was created for the analysis of apparent angles. The dihedral angle estimated from the mean of these apparent angles is in good agreement with the true dihedral angle measured in the FIB-SEM datasets. Distributions of apparent angles suggest that faceting and the presence of zero-degree dihedral angles between grains have a major influence on

Published
2014

37. Defect engineering in sedimentary colloidal crystals to produce photonic crystals

Author

Celbiologie, Physical and Colloid Chemistry, Sub Biomolecular Imaging, Sub Cell Biology, Hilhorst, J., de Winter, D.A.M., Wolters, J., Post, J.A., Petukhov, A.V., Celbiologie, Physical and Colloid Chemistry, Sub Biomolecular Imaging, Sub Cell Biology, Hilhorst, J., de Winter, D.A.M., Wolters, J., Post, J.A., and Petukhov, A.V.

Published
2013

38. Defect engineering in sedimentary colloidal crystals to produce photonic crystals

Author

Celbiologie, Physical and Colloid Chemistry, Sub Biomolecular Imaging, Sub Cell Biology, Hilhorst, J., de Winter, D.A.M., Wolters, J., Post, J.A., Petukhov, A.V., Celbiologie, Physical and Colloid Chemistry, Sub Biomolecular Imaging, Sub Cell Biology, Hilhorst, J., de Winter, D.A.M., Wolters, J., Post, J.A., and Petukhov, A.V.

Published
2013

39. Defect engineering in sedimentary colloidal crystals to produce photonic crystals

Author

Cell Biology, Neurobiology and Biophysics, Physical and Colloid Chemistry, Sub Biomolecular Imaging, Sub Cell Biology, Hilhorst, J., de Winter, D.A.M., Wolters, J., Post, J.A., Petukhov, A.V., Cell Biology, Neurobiology and Biophysics, Physical and Colloid Chemistry, Sub Biomolecular Imaging, Sub Cell Biology, Hilhorst, J., de Winter, D.A.M., Wolters, J., Post, J.A., and Petukhov, A.V.

Published
2013

40. The porosity, adicity, and reactivity of dealuminated zeolite ZSM-5 at the single partical level: The influence of the zeolite architecture

Author

Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Aramburo, L.R., Karwacki, L., Cubillas, P., Asahina, S., de Winter, D.A.M., Drury, M.R., Buurmans, I.L.C., Stavitski, I., Mores, D., Daturi, M., Bazin, P., Dumas, P., Thibault-Starzyk, F., Post, J.A., Anderson, M.W., Terasaki, O., Weckhuysen, B.M., Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Aramburo, L.R., Karwacki, L., Cubillas, P., Asahina, S., de Winter, D.A.M., Drury, M.R., Buurmans, I.L.C., Stavitski, I., Mores, D., Daturi, M., Bazin, P., Dumas, P., Thibault-Starzyk, F., Post, J.A., Anderson, M.W., Terasaki, O., and Weckhuysen, B.M.

Published
2011

41. Architecture-dependent distribution of Mesopores in steamed Zeolite crystals as visualized by FIB-SEM Tomography

Author

Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Sub Biomolecular Imaging, Structural geology and EM, Karwacki, L., de Winter, D.A.M., Aramburo, L.R., Lebbink, M.N., Post, J.A., Drury, M.R., Weckhuysen, B.M., Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Sub Biomolecular Imaging, Structural geology and EM, Karwacki, L., de Winter, D.A.M., Aramburo, L.R., Lebbink, M.N., Post, J.A., Drury, M.R., and Weckhuysen, B.M.

Published
2011

42. The porosity, adicity, and reactivity of dealuminated zeolite ZSM-5 at the single partical level: The influence of the zeolite architecture

Author

Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Aramburo, L.R., Karwacki, L., Cubillas, P., Asahina, S., de Winter, D.A.M., Drury, M.R., Buurmans, I.L.C., Stavitski, I., Mores, D., Daturi, M., Bazin, P., Dumas, P., Thibault-Starzyk, F., Post, J.A., Anderson, M.W., Terasaki, O., Weckhuysen, B.M., Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Aramburo, L.R., Karwacki, L., Cubillas, P., Asahina, S., de Winter, D.A.M., Drury, M.R., Buurmans, I.L.C., Stavitski, I., Mores, D., Daturi, M., Bazin, P., Dumas, P., Thibault-Starzyk, F., Post, J.A., Anderson, M.W., Terasaki, O., and Weckhuysen, B.M.

Published
2011

43. Architecture-dependent distribution of Mesopores in steamed Zeolite crystals as visualized by FIB-SEM Tomography

Author

Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Sub Biomolecular Imaging, Structural geology and EM, Karwacki, L., de Winter, D.A.M., Aramburo, L.R., Lebbink, M.N., Post, J.A., Drury, M.R., Weckhuysen, B.M., Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Sub Biomolecular Imaging, Structural geology and EM, Karwacki, L., de Winter, D.A.M., Aramburo, L.R., Lebbink, M.N., Post, J.A., Drury, M.R., and Weckhuysen, B.M.

Published
2011

44. Architecture-dependent distribution of Mesopores in steamed Zeolite crystals as visualized by FIB-SEM Tomography

Author

Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Sub Biomolecular Imaging, Structural geology and EM, Karwacki, L., de Winter, D.A.M., Aramburo, L.R., Lebbink, M.N., Post, J.A., Drury, M.R., Weckhuysen, B.M., Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Sub Biomolecular Imaging, Structural geology and EM, Karwacki, L., de Winter, D.A.M., Aramburo, L.R., Lebbink, M.N., Post, J.A., Drury, M.R., and Weckhuysen, B.M.

Published
2011

45. Unified internal architecture and surface barriers for molecular diffusion of microporous crystalline aluminophosphates

Author

Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Karwacki, L., van der Bij, H.E., Kornatowski, J., Cubillas, P., Drury, M.R., de Winter, D.A.M., Anderson, M.W., Weckhuysen, B.M., Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Karwacki, L., van der Bij, H.E., Kornatowski, J., Cubillas, P., Drury, M.R., de Winter, D.A.M., Anderson, M.W., and Weckhuysen, B.M.

Published
2010

46. Unified internal architecture and surface barriers for molecular diffusion of microporous crystalline aluminophosphates

Author

Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Karwacki, L., van der Bij, H.E., Kornatowski, J., Cubillas, P., Drury, M.R., de Winter, D.A.M., Anderson, M.W., Weckhuysen, B.M., Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Karwacki, L., van der Bij, H.E., Kornatowski, J., Cubillas, P., Drury, M.R., de Winter, D.A.M., Anderson, M.W., and Weckhuysen, B.M.

Published
2010

47. Unified internal architecture and surface barriers for molecular diffusion of microporous crystalline aluminophosphates

Author

Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Karwacki, L., van der Bij, H.E., Kornatowski, J., Cubillas, P., Drury, M.R., de Winter, D.A.M., Anderson, M.W., Weckhuysen, B.M., Biomolecular Imaging, Inorganic Chemistry and Catalysis, Structural geology & tectonics, Sub Inorganic Chemistry and Catalysis, Structural geology and EM, Sub Biomolecular Imaging, Karwacki, L., van der Bij, H.E., Kornatowski, J., Cubillas, P., Drury, M.R., de Winter, D.A.M., Anderson, M.W., and Weckhuysen, B.M.

Published
2010

49. Sol-gel transitions and liquid crystal phase transitions in concentrated aqueous suspensions of colloidal gibbsite platelets

Author

Biomolecular Imaging, Physical and Colloid Chemistry, Sub Physical and Colloid Chemistry, Sub Biomolecular Imaging, Mourad, M.C.D., Byelov, D.V., Petukhov, A.V., de Winter, D.A.M., Verkleij, A.J., Lekkerkerker, H.N.W., Biomolecular Imaging, Physical and Colloid Chemistry, Sub Physical and Colloid Chemistry, Sub Biomolecular Imaging, Mourad, M.C.D., Byelov, D.V., Petukhov, A.V., de Winter, D.A.M., Verkleij, A.J., and Lekkerkerker, H.N.W.

Published
2009

50. Morphology dependent MFI-type zeolite intergrowth structures leading to distinct internal and outer surface molecular diffusion barriers

Author

Deformation and metamorphic processes in the Earth's upper mantle, Inorganic Chemistry and Catalysis, Dep Scheikunde, Dep Biologie, Structural geology and EM, Sub Inorganic Chemistry and Catalysis, Karwacki, L., Kox, M.H.F., de Winter, D.A.M., Drury, M.R., Meeldijk, J.D., Stavitski, E., Schmidt, W., Mertens, M., Burton, A.W., Zones, S.I., Cubillas, P., John, N., Chan, A., Bare, S.R., Anderson, M., Kornatowski, J., Weckhuysen, B.M., Deformation and metamorphic processes in the Earth's upper mantle, Inorganic Chemistry and Catalysis, Dep Scheikunde, Dep Biologie, Structural geology and EM, Sub Inorganic Chemistry and Catalysis, Karwacki, L., Kox, M.H.F., de Winter, D.A.M., Drury, M.R., Meeldijk, J.D., Stavitski, E., Schmidt, W., Mertens, M., Burton, A.W., Zones, S.I., Cubillas, P., John, N., Chan, A., Bare, S.R., Anderson, M., Kornatowski, J., and Weckhuysen, B.M.

Published
2009

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