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Jain, H. (author), Creatore, M. (author), Poodt, P. (author)Trimethylaluminum is the most used aluminum precursor in atomic and molecular layer deposition (ALD/MLD). It provides high growth-per-cycle (GPC), is highly reactive and is relatively low cost. However, in the deposition of hybrid alucone films, TMA tends to infiltrate into the films requiring very long purge steps and thereby limiting the...article 2022
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- Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D.M. (author), Sabbadini, A. (author), de Jong, N. (author), Pertijs, M.A.P. (author), Verweij, M.D. (author) article 2022
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Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D.M. (author), Sabbadini, A. (author), de Jong, N. (author), Pertijs, M.A.P. (author), Verweij, M.D. (author)Current ultrasonic clamp-on flow meters consist of a pair of single-element transducers which are carefully positioned before use. This positioning process consists of manually finding the distance between the transducer elements, along the pipe axis, for which maximum SNR is achieved. This distance depends on the sound speed, thickness and...article 2021
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- Melskens, J. (author), Theeuwes, R.J. (author), Black, L.E. (author), Berghuis, W.J.H. (author), Macco, B. (author), Bronsveld, P.C.P. (author), Kessels, W.M.M. (author) article 2021
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Simons, E.C. (author), Weerheijm, J. (author), Toussaint, G. (author), Sluys, L.J. (author)In this study, the impact of a steel spherical projectile on an alumina ceramic is considered. New experimental and numerical results are presented and analysed. Numerical results are obtained using the Finite Element Method and the upgraded viscosity regularized Johnson-Holmquist-2 constitutive model to describe the ceramic material behaviour....article 2020
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Theelen, M. (author), Ntinas, V. (author), Steijvers, H. (author), Mannetje, H. (author), Vroon, Z. (author)Aluminum doped zinc oxide (ZnO:Al) films were deposited by sputtering on borosilicate glass (sodium poor) and soda lime glass (sodium rich). These films were exposed up to 1032 hours of damp heat (85 °C/85 % relative humidity) to study the influence of among others the sodium content of the substrate on the ZnO:Al stability. A decrease in...article 2020
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Simons, E.C. (author), Weerheijm, J. (author), Sluys, L.J. (author)Alumina ceramic is often used in armour systems. This material is known to have a brittle response under tensile loading, while a ductile response is found when sufficiently high pressures are reached. During projectile impact a ceramic material experiences both tensile loading and high pressures, hence fails in both a brittle and ductile way....article 2019
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Hattendorf, H. (author), Hermse, C.G.M. (author), IJzerman, R.M. (author)The focus in this study is on very metal dusting resistant nickel chromium alloys with a high content of chromium (in the range of 22 to 33 wt.%), additions of aluminum (between 0 and 3 wt.%) and variable iron content (between 0.1 and 15 wt.%). All samples were exposed up to 5693 h at 600 °C in a 37 vol.% CO, 7 vol.% CO2, 46 vol.% H2, 9 vol.%...article 2019
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Mameli, A. (author), Verheijen, M.A. (author), Mackus, A.J.M. (author), Kessels, W.M.M. (author), Roozeboom, F. (author)Atomic layer etching (ALE) provides Ångström-level control over material removal and holds potential for addressing the challenges in nanomanufacturing faced by conventional etching techniques. Recent research has led to the development of two main classes of ALE: ion-driven plasma processes yielding anisotropic (or directional) etch profiles...article 2018
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Kuijpers, C.J. (author), Huinink, H.P. (author), Tomozeiu, N. (author), Erich, S.J.F. (author), Adan, O.C.G. (author)Due to the increased use of nanoparticles in everyday applications, there is a need for theoretical descriptions of particle transport and attachment in porous media. It should be possible to develop a one dimensional model to describe nanoparticle retention during capillary transport of liquid mixtures in porous media. Water-glycerol...article 2018
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Hendrickx, N.W. (author), Franke, D.P. (author), Sammak, A. (author), Kouwenhoven, M. (author), Sabbagh, D. (author), Yeoh, L. (author), Li, R. (author), Tagliaferri, M.L.V. (author), Virgilio, M. (author), Capellini, G. (author), Scappucci, G. (author), Veldhorst, M. (author)Superconductors and semiconductors are crucial platforms in the field of quantum computing. They can be combined to hybrids, bringing together physical properties that enable the discovery of new emergent phenomena and provide novel strategies for quantum control. The involved semiconductor materials, however, suffer from disorder, hyperfine...article 2018
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Theelen, M.J. (author), de Graaf, F. (author), Daume, F. (author), Barreau, N. (author), Vroon, Z.A.E.P. (author), Zeman, M. (author)Degradation rates and mechanisms for molybdenum back contacts and ZnO:Al front contacts exposed to damp heat were obtained from literature and experiments. It was found that molybdenum back contacts with a higher density and covered by a MoSe2 film are more stable than their low density, bare counterparts. For ZnO:Al front contacts various...conference paper 2018
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Ushakov, A. (author), Verlaan, A.L. (author), Ebeling, R.P. (author), Rijfers, A. (author), O'Neill, R. (author), Smith, M. (author), Stratton, B. (author), Koster, N.B. (author), van der List, J.F.M. (author), Gattuso, A. (author), Lasnier, C.J. (author), Feder, R. (author), Maniscalco, M.P. (author), Verhoeff, P. (author)In ITER, first mirrors for the Upper Wide Angle Viewing System (UWAVS) are expected to experience contamination with beryllium and tungsten. Contamination levels of 10 nm can degrade mirror performance. In the UWAVS, a first mirror cleaning system will use radio-frequency (RF) gas discharge. A mockup in representative geometry was developed. The...article 2018
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Hobbs, C. (author), Jaskaniec, S. (author), McCarthy, E.K. (author), Downing, C. (author), Opelt, K. (author), Güth, K. (author), Shmeliov, A. (author), Mourad, M.C.D. (author), Mandel, K. (author), Nicolosi, V. (author)A comprehensive nanoscale understanding of layered double hydroxide thermal evolution is critical for their current and future applications as catalysts, flame retardants and oxygen evolution performers. In this report, we applied in situ transmission electron microscopy to extensively characterise the thermal progressions of nickel-iron...article 2018
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Carton, E.P. (author), Roebroeks, G.H.J.J. (author), Weerheijm, J. (author), Diederen, A.M. (author)Research on armor ceramics created only limited success in its search for relations between mechanical properties and the ballistic efficiency of this class of materials. Also TNO performed research on this subject using a range of experimental test set-ups (mainly using small and mid-caliber rounds) and diagnostic tools on a range of ceramic...conference paper 2018
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de Ligt, R. (author), van Duijn, E. (author), Grossouw, D. (author), Bosgra, S. (author), Burggraaf, J. (author), Windhorst, A. (author), Peeters, P.A.M. (author), van der Luijt, G.A. (author), Alexander-White, C. (author), Vaes, W.H.J. (author)A clinical pharmacokinetic study was performed in 12 healthy women to evaluate systemic exposure to aluminum following topical application of a representative antiperspirant formulation under real-life use conditions. A simple roll-on formulation containing an extremely rare isotope of aluminum (26 Al) chlorohydrate (ACH) was prepared to...article 2018
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Theelen, M. (author), de Graaf, F. (author), Daume, F. (author), Barreau, N. (author), Vroon, Z. (author), Zeman, M. (author)Degradation rates and mechanisms for molybdenum back contacts and ZnO:Al front contacts exposed to damp heat were obtained from literature and experiments. It was found that molybdenum back contacts with a higher density and covered by a MoSe2 film are more stable than their low density, bare counterparts. For ZnO:Al front contacts, various...conference paper 2016
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Walters, C.L. (author), Dragt, R.C. (author)Current codes and norms allow for structures to be operated in the transition between ductile and brittle behavior. Further, they often treat the Ductile to Brittle Transition Temperature as a constant even though it is well known to depend on a variety of factors, such as loading rate, constraint, and prior cold deformation. This paper roposes...conference paper 2016
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Williams, B.L. (author), Smit, S. (author), Kniknie, B.J. (author), Bakker, K.J. (author), Keuning, W. (author), Kessels, W.M.M. (author), Schropp, R.E.I. (author), Creatore, M. (author)An equivalent circuit model, which allows for the presence of three types of shunting pathways, has been developed to describe the dark J-V characteristics in CIGS solar cells. Excellent agreement between the model and experimental data was apparent throughout a temperature range of 183-323K. Voltage-independent ideality factors may be extracted...article 2015
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Camp, W.V.D. (author), Dhallé, M.M.J. (author), Wessel, W.A.J. (author), Warnet, L. (author), Atli-Veltin, B. (author), Putten, S.V.D. (author), Dam, J.A.M. (author), Ter Brake, H.J.M. (author)This paper reports on the cryogenic fatigue life of Al 2024 / Stycast 2850 FT composite sandwiches loaded under cyclic strain, as well as on the strength of their constituent materials at 77 K. These Fibre Metal Laminate (FML) specimen serve as a model for an alternative class of cryogenic structural materials that might be used e.g. in...conference paper 2015