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Zhou, Hanxiao (author)Large amounts of oily wastewater which included oil-in-water (O/W) emulsions, also known as produced water (PW), were produced in tandem with the enhanced oil recovery (EOR). Ultrafiltration (UF) was an effective and economic method to separate micron-sized O/W emulsions, while the membrane fouling limited its development. Understanding the...master thesis 2023
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Molenaar, Margo (author)The reliability of power semiconductor devices is an important feature when designing converter, since the semiconductors are prone to failure and a weak link in the system. Power semiconductor devices are susceptible to thermo-mechanical stresses, and should be investigated to make reliable semiconductors. The power losses inside the device...master thesis 2023
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Zhou, Hanxiao (author)Constant flux MF/UF filtration is preferred in real-world applications because it <br/>provides more consistent permeate flow rates than fixed transmembrane pressure studies. Particularly, little is understood about the fouling of ceramic membranes in constant flux filtration modes by nano-sized O/W emulsions. In this study, the effects of...student report 2023
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Salden, Tom (author)Sensors are extremely valuable to this world. Without sensors, we would not be able to live as we do in this data-driven environment. Therefore, finding new ways to measure the matter around us is a continuous process. In this work, an addition to the new sensors is attempted, using materials that can withstand the most extreme circumstances....master thesis 2022
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Yuan, Michaël (author)Wide band gap semiconductor has attracted significant industrial interest over the past decade with its superior properties: such as high critical electrical field, high thermal conductivity andwide band gap. Meanwhile many industries operating in harsh environments have long had demands for sensing solutions that function at high temperature....master thesis 2022
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LI, JINGLIN (author)To extend Moore’s law, silicon carbide devices attend the researcher’s attention due to their irreplaceable advantages such as high critical breakdown electrical field, wide bandgap and excellent thermal conductivity without sacrificing too much charge carrier mobility. However, the defects on the SiC-oxide interface degrades the performance of...master thesis 2022
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Marting, Louis (author)Terahertz astronomy has been exceptionally unexplored until the last decades due to a technological gap, but exactly at these wavelengths the most distant galaxies appear very bright. Efficient instruments that are capable of spectrometry are essential in understanding the physics of these distant objects. Within the framework of this thesis, an...master thesis 2022
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Böcher, Catrin (author)Transitioning of energy intensive industries (EIIs) towards more sustainability forms an important building block in achieving the Paris climate goals. Silicon carbide (SiC) production is such an EII, though it has not yet received much attention in systemic research. This thesis attempts to fill this gap by studying how SiC flows through the...master thesis 2022
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Schuurmans, Stefan (author)51CrV4 is a spring steel commonly used for the production of trailing arms in the suspension assembly of trucks. It is essential for these products to be predictable and reliable. The presence of carbide banding in 51CrV4 steel can be detrimental to this predictable and reliable behavior. Therefore, in this research, the formation of carbide...master thesis 2022
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Ammerlaan, Tim (author)Lithium-ion batteries are currently most commonly used in most electronic devices. These batteries are used because of their superiority in gravimetric energy and cyclability compared to other battery technologies. The most common anode used in lithium-ion batteries is currently graphite. Graphite has proven to be a very stable cycling material....master thesis 2021
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SHANKAR, SHREYAS (author)Silicon-based MEMS technology has been the standard for developing 2D and 3D<br/>micro-structures for many years. There are 2 main classifications of MEMS manufacturing technologies, viz. bulk micro-machining, and surface micro-machining.<br/>These techniques have its own set of drawbacks. Bulk micro-machining affects the structural integrity of...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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Mathew, Philip (author)The ambitious transition towards a renewable future is being made possible by power electronic systems that facilitate effective control and efficient conversion of energy. One such system is the solid-state transformer (SST) which aims to replace conventional transformers by offering larger energy densities and flexible...master thesis 2021
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Mandrampazakis, Antonis (author)Carrier-selective passivating contacts (CSPC) are one of the most promising silicon solar cell contact structures. These contacts enable the passivation of the silicon surface as well as a high carrier selectivity. So far excellent results have been demonstrated with the use of poly-Si in stack with SiO2. In this work, we optimize an alternative...master thesis 2019
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Jagarlamudi, Samyuktha (author)Large scale industries like automobile, agriculture and poultry etc.. are in the need of a reliable technology for gas sensors. Till date various types of sensors have been developed for gas applications but the SiC gas sensing has been a recent trend. With increase study in MEMS technology, the SiC material is gaining importance for sensor...master thesis 2019
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Muhammad Fakhry Hatta, Fakhry (author)Abstract<br/>The Quenching and Partitioning (Q&P) process starts with an austenitization process followed by rapid cooling to a temperature named quenching temperature ranged between the martensite start (M<sub>s</sub>) and martensite finish (M<sub>f</sub>) temperatures to establish initial fractions of martensite and austenite. Afterwards,...master thesis 2018
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Mostert, E. (author)Electrical trains are fed with a high voltage to reduce transmission losses. In the train, these voltages have to be stepped down to a voltage that could be fed into the traction motors. This is done with IGBT based power converters. The use of IGBTs in power converters has some disadvantages: they generate a lot of heat and are therefore not...master thesis 2017
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Hulsebos, M. (author)With electron beam lithography, a cutting edge technology has been developed that might introduce new possibilities in the design of chips. The word "might" has been used here because e-beam lithography is not yet available for the mass production market. One of the bottlenecks in the development of e-beam lithography is the positioning...master thesis 2017
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Thomas, S. (author)Optical coherence tomography (OCT) probes rely on MEMS micro-scanners to provide fast and reproducible scans covering as much area as possible. A popular choice of actuators employed in this role are electrothermal bimorph actuators. They comprise of two layers of different materials which are rigidly joined together. Differential expansion...master thesis 2015