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de Vrijer, T. (author), Bouazzata, Bilal (author), Ravichandran, Ashwath (author), van Dingen, Julian E.C. (author), Roelandschap, Paul J. (author), Roodenburg, Koos (author), Roerink, Steven J. (author), Saitta, F.S. (author), Blackstone, Thijs (author), Smets, A.H.M. (author)In this paper the opto-electrical nature of hydrogenated group IV alloys with optical bandgap energies ranging from 1.0 eV up to 2.3 eV are studied. The fundamental physical principles that determine the relation between the bandgap and the structural characteristics such as material density, elemental composition, void fraction and...journal article 2022
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Gradl, P.R. (author), Cervone, A. (author), Gill, E.K.A. (author)Additive Manufacturing (AM) offers new design and manufacturing opportunities of thin-wall microchannel heat exchangers for aerospace and industrial applications. Laser Powder Directed Energy Deposition (LP-DED) is an AM process providing large scale manufacturing of thin-wall microchannel heat exchangers. Successful industrialization of the LP...journal article 2022
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Noroozi, Reza (author), Zolfagharian, Ali (author), Fotouhi, M. (author), Bodaghi, Mahdi (author)Additive manufacturing (AM), as one of the most powerful manufacturing methods, is fabricating a three-dimensional (3D) structure using computer-aided design (CAD) data by adding material layer by layer. In contrast to traditional manufacturing processes that start from raw block material and remove waste materials, the AM process can...book chapter 2022
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Elerian, M.F.A.I. (author), van Rhee, C. (author), Helmons, R.L.J. (author)Renewable energy installations and energy storage solutions require significant quantities of critical raw materials such as nickel, cobalt and rare earth metals. The supply chains of these raw materials face many difficulties, such as the continuous decrease of mineral ore grades on land. In view of these complications, the motivation to...journal article 2022
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Zhao, J. (author), Li, Jia (author), Liu, X. (author), Bannenberg, L.J. (author), Bruno, Annalisa (author), Savenije, T.J. (author)Co-evaporation of metal halide perovskites by thermal evaporation is an attractive method since it does not require harmful solvents and enables precise control of the film thickness. Furthermore, the ability to manipulate the Fermi level allows the formation of a graded homojunction, providing interesting opportunities to improve the charge...journal article 2022
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Benz, D. (author), Van Bui, Hao (author), Hintzen, H.T.J.M. (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)The photocatalytic mechanism of TiO<sub>2</sub> (P25) nanoparticles coated with SiO<sub>2</sub> (SiO<sub>2</sub>:TiO<sub>2</sub>) by atomic layer deposition was investigated. The deposition of SiO<sub>2</sub> on TiO<sub>2</sub> not only gives a photocatalytic improvement for the degradation of both Rhodamine B (3.6–fold) and Acid Blue 9 (3...journal article 2022
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de Vrijer, T. (author), Roodenburg, Koos (author), Saitta, F.S. (author), Blackstone, Thijs (author), Limodio, G. (author), Smets, A.H.M. (author)An alloy based on the group IV elements germanium and tin has the potential of yielding an earth-abundant low bandgap energy semiconductor material with applications in the fields of micro-electronics, optics, photonics and photovoltaics. In this work, the first steps towards the plasma enhanced chemical vapour deposition (PECVD) processing of a...journal article 2022
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Moyo, Welldone (author), Chaukuraa, Nhamo (author), Motsaa, Machawe M. (author), Msagatia, Titus A.M. (author), Mambab, Bhekie B. (author), Heijman, Sebastiaan (author), Nkambulea, Thabo T.I. (author)This work investigates the enhancement of antifouling properties of ceramic nanofiltration membranes by surface modification via atomic layer deposition (ALD) of TiO<sub>2</sub>. Feed solutions containing bovine serum albumin (BSA), humic acid (HA) and sodium alginate (SA) were used as model foulants. The classic fouling mechanism models and...journal article 2022
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Mishra, V. (author), Ayas, C. (author), Langelaar, Matthijs (author), van Keulen, A. (author)A remarkable elastic anisotropy in plates of austenitic stainless steel produced by the Wire and Arc Additive Manufacturing process is recently reported. The Young's modulus depends on the angle of orientation with respect to the material deposition direction. Here, for the first time, this anisotropy is exploited to maximize structural...journal article 2022
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Li, M. (author), Fu, S. (author), Saedy, S. (author), Rajendrakumar, Aparna (author), Tichelaar, F.D. (author), Kortlever, R. (author), van Ommen, J.R. (author)Preparing supported nanoparticles with a well-defined structure, uniform particle size, and composition using conventional catalyst synthesis methods, such as impregnation, precipitation, and deposition-precipitation is challenging. Furthermore, these liquid phase methods require significant solvent consumption, which has sustainable issues...journal article 2022
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Cortes Chitiva, Camilo (author)During the last years, large improvements in the efficiency on the CIGS technology have been achieved, making them excellent candidates as bottom cells for double junction tandem devices. This improvement is a result of the implementation of post deposition treatments (PDT) using alkali-metal fluorides. These alkalies prove to enhance the...master thesis 2021
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Lee, M. (author)This thesis encompasses both applied and fundamental studies of suspended van der Waals materials. Chapters 1 and 2 give an introduction to the field of 2D materials and some of the critical methods which facilitate the study of the suspended structures. In Chapters 3 and 4 we focus on the applications of graphene in barometric pressure sensors...doctoral thesis 2021
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van Loo, Marijn (author)Excessive nitrogen deposition from anthropogenic emissions has a global impact on natural biodiversity. While aviation emissions have been studied in the context of climate change and air quality, this is not true for nitrogen deposition. Meanwhile the growth of the aviation industry is likely to increase the relative contribution of aviation...master thesis 2021
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Qin, Guangze (author)Colloidal fouling has attracted increasing interest in the membrane field. Oil and water (O/W) emulsion droplet and Extracellular polymeric substance (EPS) are significant colloids in produced water and surface water, respectively. Oily wastewater is produced in many industrial processes such as oil and gas extraction processes, and can take a...master thesis 2021
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Tuztaşi, Halis (author)Diamond is known for its outstanding material properties, including highest hardness, excellent chem ical resistance and high thermal conductivity. Diamond, which is normally formed in high pressure and temperature environments, can also be produced as polycrystalline thin films in reduced pressure environments through chemical vapor deposition...master thesis 2021
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La Zara, D. (author)The majority of pharmaceutical products is made of solid powders. The morphology and surface characteristics of drug particles affect both their bulk behaviour, e.g., flowability, dispersibility and tabletability, in the manufacturing process of dosage forms as well as their bioavailability upon administration into the human body. For instance,...doctoral thesis 2021
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Meijer, Ralf (author)The lifespan of internal reforming solid oxide fuel cells (SOFCs) is not yet sufficient. Among other design challenges, this is due to detrimental carbon deposition formations. This must be mitigated, without compromising the power output and efficiency of the fuel cell for it to become a commercial viable product. The carbon that is deposited...master thesis 2021
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Yarce Botero, A. (author), Quintero Montoya, O.L. (author), Lopez Restrepo, S. (author), Pinel Pelaez, N. (author), Hinestroza Ramirez, J.E. (author), Nino-Ruiz, Elias David (author), Anderson Flórez, Jimmy (author), Rendón, Angela María (author), Alvarez-Laínez, Monica Lucia (author), Heemink, A.W. (author)This chapter book presents Medellín Air qUality Initiative or MAUI Project; it tells a brief story of this teamwork, their scientific and technological directions. The modeling work focuses on the ecosystems and human health impact due to the exposition of several pollutants transported from long-range places and deposited. For this objective,...book chapter 2021
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Kerstens, Fabio (author), Cervone, A. (author), Gradl, P.R. (author)High performance liquid rocket engines require cooling to maintain structural integrity of the combustion chamber which is exposed to high thermal and environmental loads. For many systems, this is achieved by means of regenerative cooling, where a coolant flows through passages around the chamber wall whilst extracting heat from the wall. A...journal article 2021
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Merkx, E.P.J. (author), Plokker, M.P. (author), van der Kolk, E. (author)The parameters governing the performance of a luminescent solar concentrator (LSC) are determined for sputtered thin-films of NaI:Tm<sup>2+</sup>, CaBr<sub>2</sub>:Tm<sup>2+</sup>, and CaI<sub>2</sub>:Tm<sup>2+</sup>. These parameters are determined by using six gradient thin film material libraries, combinatorially sputtered from metallic...journal article 2021