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Structural and Optical Properties of Thin Film β-Ta upon Exposure to Hydrogen to Asses Its Applicability as Hydrogen Sensing Material

Bannenberg, L.J. (author), Verhoeff, D. (author), Jonckers Newton, Nick (author), Thijs, M.A. (author), Schreuders, H. (author)

Here, we study the structural and optical properties of tetragonal β-tantalum-sputtered thin films both ex situ and when exposed to hydrogen, with a focus on optical hydrogen sensing applications. Using optical transmission measurements, out-of-plane and in-plane X-ray diffraction, and X-ray and neutron reflectometry, we show that thin film β...

journal article 2024

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Nanoscale Mapping of the 3D Strain Tensor in a Germanium Quantum Well Hosting a Functional Spin Qubit Device

Corley-Wiciak, Cedric (author), Richter, Carsten (author), Zoellner, Marvin H. (author), Zaitsev, Ignatii (author), Manganelli, Costanza L. (author), Hendrickx, N.W. (author), Sammak, A. (author), Veldhorst, M. (author), Scappucci, G. (author)

A strained Ge quantum well, grown on a SiGe/Si virtual substrate and hosting two electrostatically defined hole spin qubits, is nondestructively investigated by synchrotron-based scanning X-ray diffraction microscopy to determine all its Bravais lattice parameters. This allows rendering the three-dimensional spatial dependence of the six...

journal article 2023

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Tuning the Properties of Thin-Film TaRu for Hydrogen-Sensing Applications

Bannenberg, L.J. (author), Schreuders, H. (author), van Beugen, N. (author), Kinane, Christy (author), Hall, Stephen (author), Dam, B. (author)

Accurate, cost-efficient, and safe hydrogen sensors will play a key role in the future hydrogen economy. Optical hydrogen sensors based on metal hydrides are attractive owing to their small size and costs and the fact that they are intrinsically safe. These sensors rely on suitable sensing materials, of which the optical properties change...

journal article 2023

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The “Historical Materials BAG”: A New Facilitated Access to Synchrotron X-ray Diffraction Analyses for Cultural Heritage Materials at the European Synchrotron Radiation Facility

Cotte, Marine (author), Gonzalez, Victor (author), Vanmeert, Frederik (author), Jiménez, Núria (author), Possenti, Elena (author), Ghirardello, Marta (author), Avranovich Clerici, E. (author), Vivani, Riccardo (author), Taniguchi, Yoko (author), McCarthy, Joanne (author)

The European Synchrotron Radiation Facility (ESRF) has recently commissioned the new Extremely Brilliant Source (EBS). The gain in brightness as well as the continuous development of beamline instruments boosts the beamline performances, in particular in terms of accelerated data acquisition. This has motivated the development of new access...

journal article 2022

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New insights and coupled modelling of the structural and thermodynamic properties of the LiF-UF4 system

Ocadiz flores, J.A. (author), Gheribi, A. E. (author), Vlieland, J. (author), Dardenne, K. (author), Rothe, J. (author), Konings, R. (author), Smith, A.L. (author)

© 2021 The Authors LiF-UF4 is a key binary system for molten fluoride reactor technology, which has not been scrutinized as thoroughly as the closely related LiF-ThF4 system. The phase diagram equilibria in the system LiF-UF4 are explored in this work with X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The short-range...

journal article 2021

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Influence of Reduced Na Vacancy Concentrations in the Sodium Superionic Conductors Na_{11+ x}Sn₂P_{1- x}M_xS₁₂(M = Sn, Ge)

Kraft, Marvin A. (author), Gronych, Lara M. (author), Famprikis, T. (author), Zeier, Wolfgang G. (author)

Exploration of sulfidic sodium solid electrolytes and their design contributes to advances in solid-state sodium batteries. Such a design is guided by a better understanding of fast sodium transport, for instance, in the herein studied Na11Sn2PS12-type materials. By using Rietveld refinements against synchrotron X-ray diffraction and...

journal article 2021

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Evolution of face-centered cubic Ti alloys transformation by X-ray diffraction profile analysis in mechanical alloying

Pio, Edgar (author), Medina, Ariosto (author), Martínez, Carola (author), Castro Cerda, F. (author), Aguilar, Claudio (author)

Four titanium alloys (Ti-Ta, Ti-Ta-Sn, Ti-Ta-Mn, and Ti-Nb-Sn) were synthesized by mechanical alloying (MA) in a planetary mill in different times between 2 h and 100 h. The microstructure characterization was made by X-ray diffraction (XRD), in which the Rietveld method was applied to analyze the diffraction patterns. The study demonstrated...

journal article 2021

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Tantalum-Palladium: Hysteresis-Free Optical Hydrogen Sensor Over 7 Orders of Magnitude in Pressure with Sub-Second Response

Bannenberg, L.J. (author), Schreuders, H. (author), Dam, B. (author)

Hydrogen detection in a reliable, fast, and cost-effective manner is a prerequisite for the large-scale implementation of hydrogen in a green economy. Thin film Ta_1−yPd_y is presented as an effective optical sensing material with extremely wide sensing ranges covering at least 7 orders of magnitude in hydrogen pressure....

journal article 2021

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Thermodynamic assessment of the KF-ThF₄, LiF-KF-ThF₄ and NaF-KF-ThF₄ systems

Ocadiz flores, J.A. (author), Carré, E. (author), Griveau, J. C. (author), Colineau, E. (author), Capelli, E. (author), Souček, P. (author), Beneš, O. (author), Smith, A.L. (author)

A thermodynamic assessment of the KF-ThF₄ binary system using the CALPHAD method is presented, where the liquid solution is described by the modified quasichemical formalism in the quadruplet approximation. The optimization of the phase diagram is based on experimental data reported in the literature and newly measured X-ray...

journal article 2020

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Structural and thermodynamic study of Cs₃Na(MoO₄)₂: Margin to the safe operation of sodium cooled fast reactors

Smith, A.L. (author), Kauric, G.P.T.F. (author), van Eijck, L. (author), Goubitz, K. (author), Clavier, N. (author), Wallez, G. (author), Konings, R. (author)

Neutron diffraction measurements of the double molybdate Cs₃Na(MoO₄)₂ have been performed for the first time in this work and the crystal structure refined using the Rietveld method. The thermal expansion of this trigonal phase, in space group P3¯m1, measured using high temperature X-ray diffraction (XRD),...

journal article 2019

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Direct Comparison of PdAu Alloy Thin Films and Nanoparticles upon Hydrogen Exposure

Bannenberg, L.J. (author), Nugroho, Ferry Anggoro Ardy (author), Schreuders, H. (author), Norder, B. (author), Trinh, Thuy-Trang (author), Steinke, N.J. (author), van Well, A.A. (author), Langhammer, Christoph (author), Dam, B. (author)

Nanostructured metal hydrides are able to efficiently detect hydrogen in optical sensors. In the literature, two nanostructured systems based on metal hydrides have been proposed for this purpose each with its own detection principle: continuous sub-100 nm thin films read out via optical reflectance/transmittance changes and nanoparticle arrays...

journal article 2019

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Improved corrosion protection of titanium implant material by crystallographic texturing of Sr doped calcium phosphate electrodeposits

Munirathinam, B. (author), Jaladurgam, Nitesh R. (author), Magesh, J. (author), Narayanan, Ramaswamy (author), Mol, J.M.C. (author), Neelakantan, Lakshman (author)

Nanocrystalline calcium phosphate (CaP) coatings can provide biocompatibility and corrosion protection to biomaterials upon implementation in the human body. While the long term stability of recently developed coatings in biological environment proves to be challenging, the present work tailors the surface by orienting the growth ...

journal article 2019

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Revealing operando transformation dynamics in individual Li-ion electrode crystallites using X-Ray Microbeam Diffraction

van Hulzen, M. (author), Ooms, F.G.B. (author), Wright, Jonathan P. (author), Wagemaker, M. (author)

For the development of next-generation batteries it is important to understand the structural changes in electrodes under realistic non-equilibrium conditions. With microbeam X-ray diffraction it is possible to probe many individual electrode grains concurrently under non-equilibrium conditions in realistic battery systems. This makes it...

journal article 2018

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Thermodynamic assessment of the LiF-NiF₂, NaF-NiF₂ and KF-NiF₂ systems

Ocadiz flores, J.A. (author), Capelli, E. (author), Raison, P. E. (author), Konings, R. (author), Smith, A.L. (author)

Using the modified quasi-chemical model in the quadruplet approximation, three new thermodynamic assessments of binary systems useful for the detailed operational design of the Molten Salt Reactor are presented: AF-NiF₂ (A = Li, Na, K). These systems are particularly relevant for the study of the molten salt-structural materials...

journal article 2018

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Revealing Lattice Expansion of Small-Pore Zeolite Catalysts during the Methanol-to-Olefins Process Using Combined Operando X-ray Diffraction and UV-vis Spectroscopy

Goetze, Joris (author), Yarulina, I. (author), Gascon, Jorge (author), Kapteijn, F. (author), Weckhuysen, Bert M. (author)

In small-pore zeolite catalysts, where the size of the pores is limited by eight-ring windows, aromatic hydrocarbon pool molecules that are formed inside the zeolite during the Methanol-to-Olefins (MTO) process cannot exit the pores and are retained inside the catalyst. Hydrocarbon species whose size is comparable to the size of the zeolite...

journal article 2018

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Transboundary sediment transfer from source to sink using a mineralogical analysis. Case study: Roseires Reservoir, Blue Nile, Sudan

Ali, Yasir S.A. (author), Paron, Paolo (author), Crosato, A. (author), Mohamed, Yasir A. (author)

Sediment accumulation hampers optimal water resources management of reservoirs. In the Roseires Reservoir across the Blue Nile River, in Sudan, about 30% of the storage capacity has been lost by sedimentation before dam heightening (2012), despite regular sediment sluicing and flushing. At the same time, increasing soil erosion in the upper...

journal article 2017

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The structure of (nuclear) graphite: From the atomic to the macro scales

Zhou, Z. (author)

doctoral thesis 2016

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Quantification of dislocation structures from anelastic deformation behaviour

Arechabaleta Guenechea, Z. (author), van Liempt, P. (author), Sietsma, J. (author)

The pre-yield deformation behaviour (i.e., at stresses below the yield stress) of two materials, pure iron and a low-alloy steel, and its anelastic nature are analysed at room temperature, before and after the dislocation structures are varied by plastic deformation. It is shown, based on tensile experiments, that this behaviour can be explained...

journal article 2016

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Original and pyrometamorphical altered Bentheimer sandstone: Petrophysical properties, surface and dielectric behavior

Peksa, A.E. (author), Wolf, K.H.A.A. (author), Slob, E.C. (author), Chmura, L.A. (author), Zitha, P.L.J. (author)

Bentheimer sandstone is a quartz-rich permeable hard sedimentary rock used for core flooding experiments. When fired to stabilize clays (subjected to high temperatures), pyrometamorphical phase changes induce texture and pore framework alteration. As a consequence the new dielectric response may influence wettability. The literature regarding...

journal article 2016

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Lithium and Sodium Insertion in Nanostructured Titanates: Experiments and simulations

Shen, K. (author)

Nanostructured materials are featured by providing a variety of favourable electrical properties, as the reduced ion and electron transport paths enable significant enhancement on (de)intercalation rates and hence high power. For TiO2 anatase, nano-sizing results in a curved open cell voltage profile with a much shorter plateau region in...

doctoral thesis 2014