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Mo(Al_xSi_1−x)₂ healing particles for high temperature ceramics and encapsulation by selective oxidation of aluminium

Ding, Z. (author), Brouwer, J.C. (author), Kwakernaak, C. (author), Zhu, Jia-Ning (author), Popovich, V. (author), Hermans, M.J.M. (author), Sloof, W.G. (author)

To prevent premature triggering of the healing reaction in Mo-Si containing self-healing thermal barrier coating system, an oxygen impenetrable shell (α-Al₂O₃) around the sacrificial healing particles (MoSi₂) is desired. Here an encapsulation method is presented through selective oxidation of Al in Mo(Al<sub>x...

journal article 2023

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Selective oxidation of aluminium in Mo(Al,Si)₂

Ding, Z. (author), Brouwer, J.C. (author), Kwakernaak, C. (author), Hermans, M.J.M. (author), Popovich, V. (author), Quadakkers, Willem J. (author), Sloof, W.G. (author)

Mo(Al_xSi_1-x)₂ alloy with x in the range of 0.35–0.65 were prepared by a one-step spark plasma sintering. To study the exclusive formation of an α-Al₂O₃ scale, oxidation experiments were conducted in low and high oxygen partial pressure ambient at 1373 K; viz.: 10⁻¹⁴ and 0.21...

journal article 2023

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Warm-starting evolutionary plan optimization for high-dose-rate brachytherapy treatment to reduce optimization time

Bakker, Matthias (author)

master thesis 2022

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Revealing the influence of Mo addition on interphase precipitation in Ti-bearing low carbon steels

Dong, Haokai (author), Chen, Hao (author), Riyahi khorasgani, Ahmadreza (author), Zhang, Boning (author), Zhang, Yongjie (author), Wang, Zhenqiang (author), Zhou, Xiaosheng (author), Wang, Wei (author), van der Zwaag, S. (author)

Mo is widely used as an effective microalloying element to improve mechanical performance of interphase precipitation steels, but the precise role of Mo in interphase precipitation behavior is not fully understood. In this contribution, interphase precipitation behavior in a series of Ti-Mo-bearing low carbon steels is systematically studied,...

journal article 2022

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A cerium-based metal-organic framework as adsorbent for the ⁹⁹Mo/^99mTc generator

Ma, C. (author), Wolterbeek, H.T. (author), Denkova, A.G. (author), Serra Crespo, P. (author)

The cerium-based metal–organic framework UiO-66 (Ce) was examined as a potential adsorbent for the ⁹⁹Mo/^99mTc generator. The results showed that the adsorbent had an outstanding adsorption performance, reaching up to 475 mg/g adsorption capacity at pH 3. An adsorption mechanism was proposed, where the adsorption was...

journal article 2022

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High-Power Digital Transmitters for Wireless Infrastructure Applications (A Feasibility Study)

Bootsman, R.J. (author), Mul, D.P.N. (author), Shen, Y. (author), Hashemi, M. (author), Heeres, Rob M. (author), van Rijs, Fred (author), Alavi, S.M. (author), de Vreede, L.C.N. (author)

Fully digital transmitters (DTXs) have the potential of replacing analog-intensive transmitter (TX) line-ups in future massive multiple-input and multiple-output (mMIMO) systems since they hold the promise of higher system integration level and energy efficiency. DTX operation so far has been limited to low RF output powers. This article...

journal article 2022

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Microelectronic design of a pseudo voltage clamp for a 0.18um CMOS-based mesoscale neural interface for intracellular in-vitro recording and stimulation

del Rivero Cortázar, Aitor (author)

The need to understand how the brain works has sparked interest in electrode arrays to record neural signals. Intracellular recordings with nanoelectrodes that penetrate the cell allow better signal quality and additional functions such as voltage clamping to set the neuron's transmembrane voltage. The voltage clamp aims to facilitate the...

master thesis 2021

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Adsorption of molybdenum on Zr-based MOFs for potential application in the ⁹⁹Mo/^99mTc generator

Ma, C. (author), Vasileiadis, A. (author), Wolterbeek, H.T. (author), Denkova, A.G. (author), Serra Crespo, P. (author)

The potential of the metal–organic framework UiO-66 and its functionalized derivatives for their utilization in the ⁹⁹Mo/^99mTc generator was assessed. Molybdenum adsorption experiments, structure characterization, molecular simulations and column experiments with molybdenum-99 were carried out. The results showed that...

journal article 2021

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Position-Controlled Fabrication of Vertically Aligned Mo/MoS₂ Core–Shell Nanopillar Arrays

Maduro, L.A. (author), Noordam, M.L. (author), Bolhuis, M. (author), Kuipers, L. (author), Conesa Boj, S.C. (author)

The fabrication of 2D materials, such as transition metal dichalcogenides (TMDs), in geometries beyond the standard platelet-like configuration exhibits significant challenges which severely limit the range of available morphologies. These challenges arise due to the anisotropic character of their bonding van der Waals out-of-plane while...

journal article 2021

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Do More Elaborate Search Strategies Lead to Better Neural Architecture Search Performance?

den Ottelander, Tom (author)

Computer vision tasks, like supervised image classification, are effectively tackled by convolutional neural networks, provided that the architecture, which defines the structure of the network, is set correctly. Neural Architecture Search (NAS) is a relatively young and increasingly popular field that is concerned with automatically optimizing...

master thesis 2020

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Direct transformation of crystalline MoO₃ into few-layers MoS₂

Carrascoso, Felix (author), Sánchez-Santolino, Gabriel (author), Hsu, C. (author), Nemes, Norbert M. (author), Torres-Pardo, Almudena (author), Gant, Patricia (author), Mompeán, Federico J. (author), Kalantar-zadeh, Kourosh (author), Alonso, José A. (author)

We fabricated large-area atomically thin MoS₂ layers through the direct transformation of crystalline molybdenum trioxide (MoO₃) by sulfurization at relatively low temperatures. The obtained MoS₂ sheets are polycrystalline (~10-20 nm single-crystal domain size) with areas of up to 300 × 300 μm2, 2-4 layers in...

journal article 2020

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The application of atomic layer deposition in the production of sorbents for ⁹⁹Mo/^99mTc generator

Moret, J. L.T.M. (author), Alkemade, J. (author), Upcraft, T. M. (author), Paulssen, E. (author), Wolterbeek, H.T. (author), van Ommen, J.R. (author), Denkova, A.G. (author)

New production routes for ⁹⁹Mo are steadily gaining importance. However, the obtained specific activity is much lower than currently produced by the fission of U-235. To be able to supply hospitals with ⁹⁹Mo/^99mTc generators with the desired activity, the adsorption capacity of the column material should be...

journal article 2020

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Hollow MoS₃ Nanospheres as Electrode Material for “Water-in-Salt” Li–Ion Batteries

Quan, Ting (author), Xu, Yaolin (author), Tovar, Michael (author), Goubard-Bretesché, Nicolas (author), Li, Z. (author), Kochovski, Zdravko (author), Kirmse, Holm (author), Skrodczky, Kai (author), Wagemaker, M. (author)

The use of “water-in-salt” electrolyte (WISE) (i. e., a highly concentrated aqueous solution) in rechargeable batteries has received increasing attention due to the significantly expanded electrochemical window compared to the limited voltage of conventional aqueous electrolytes. It enables the use of more positive/negative electrode material...

journal article 2020

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A site-sensitive quasi-in situ strategy to characterize Mo/HZSM-5 during activation

Vollmer, I. (author), Kosinov, N. (author), Szécsényi, Ágnes (author), Li, G. (author), Yarulina, I. (author), Abou-Hamad, Edy (author), Gurinov, Andrei (author), Ould-Chikh, Samy (author), Aguilar-Tapia, Antonio (author), Hazemann, Jean Louis (author), Pidko, E.A. (author), Hensen, Emiel (author), Kapteijn, F. (author), Gascon, Jorge (author)

The active sites on the methane dehydroaromatization (MDA) catalyst Mo/HZSM-5 are very hard to characterize, because they are present in various geometries and sizes and only form under reaction conditions with methane at 700 °C. To address these issues an experimental strategy is presented that enables distinguishing different active sites...

journal article 2019

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Effect of Nano-SnS and Nano-MoS₂ on the corrosion protection performance of the polyvinylbutyral and zinc-rich polyvinylbutyral coatings

Qu, Zuopeng (author), Wang, Lei (author), Tang, H. (author), Ye, H. (author), Li, Meicheng (author)

In this paper, four composite coatings of nano-SnS/polyvinylbutyral (PVB), nano-MoS₂/PVB, nano-SnS-Zn/PVB, and nano-MoS₂-Zn/PVB were prepared, and their anti-corrosion mechanism was analyzed by experimental and theoretical calculations. The results of the electrochemical experiments show that the effect of nano-MoS<sub>2...

journal article 2019

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Quantifying the impact of dispersion, acidity and porosity of Mo/HZSM-5 on the performance in methane dehydroaromatization

Vollmer, I. (author), Mondal, A. (author), Yarulina, I. (author), Abou-Hamad, Edy (author), Kapteijn, F. (author), Gascon, Jorge (author)

The catalytic performance of the bifunctional catalyst Mo/HZSM-5 for methane dehydroaromatization (MDA) depends on the Mo dispersion and on zeolite acidity. Here we separately quantify the effect of dispersion and the effect of acidity on aromatic yields and coke selectivity. Also, the effect of porosity on the same is quantitatively...

journal article 2019

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An Auto-Zero Stabilized Voltage Buffer with a Quiet Chopping Scheme and Constant Input Current

Rooijers, C.T. (author), Huijsing, J.H. (author), Makinwa, K.A.A. (author)

The readout of high-impedance sensors and sampled voltage references [1] requires amplifiers that can achieve both low offset and low input current. Recently, it has been shown that this unique combination can be achieved by an auto-zero (AZ) stabilized buffer [2]. However, its low-frequency noise density is surd 5 times higher than the...

conference paper 2019

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Synthesis of severe lattice distorted MoS₂ coupled with hetero-bonds as anode for superior lithium-ion batteries

Liu, Yanyan (author), Zhang, Long (author), Wang, Hongqiang (author), Yu, C. (author), Yan, Xinlin (author), Liu, Qiunan (author), Xu, Bo (author), Wang, Li min (author)

Exploration of advanced anode materials is a highly relevant research topic for next generation lithium-ion batteries. Here, we report severe lattice distorted MoS₂ nanosheets with a flower-like morphology prepared with PEG400 as additive, which acts not only as surfactant but importantly, also as reactant. Notably, in the absence...

journal article 2018

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Progress in Developing a Structure-Activity Relationship for the Direct Aromatization of Methane

Vollmer, I. (author), Yarulina, I. (author), Kapteijn, F. (author), Gascon, Jorge (author)

To secure future supply of aromatics, methane is a commercially interesting alternative feedstock. Direct conversion of methane into aromatics combines the challenge of activating one of the strongest C-H bonds in all hydrocarbons with the selective aromatization over zeolites. To address these challenges, smart catalyst and process design...

journal article 2018

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Characterization and Compact Modeling of Nanometer CMOS Transistors at Deep-Cryogenic Temperatures

Incandela, R.M. (author), Song, L (author), Homulle, Harald (author), Charbon-Iwasaki-Charbon, E. (author), Vladimirescu, A. (author), Sebastiano, F. (author)

Cryogenic characterization and modeling of two nanometer bulk CMOS technologies (0.16-&amp;#x03BC;m and 40-nm) are presented in this paper. Several devices from both technologies were extensively characterized at temperatures of 4 K and below. Based on a detailed understanding of the device physics at deep-cryogenic temperatures, a compact...

journal article 2018