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Blank, Bastiaan (author)Absorbent mats, abundantly used in hospitals, are integral to maintaining hygiene and cleanliness by effectively collecting and retaining patient's bodily fluids. absorbent mats are available as disposable and reusable products. In the Netherlands, predominantly disposable products are used, and approximately 23 million absorbent mats are...master thesis 2023
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Wolffenbuttel, R.F. (author), Ghaderi, M. Amir (author)Metasurface coatings on a free-standing SiN thin film membrane are fabricated on a Si substrate using masked lithography and CMOS-compatible surface micromachining. The result is a band-limited absorber for the mid-IR, which is part of a microstructure that is attached to the substrate by long and slender suspension beams to provide thermal...journal article 2023
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Ghasemi, Mostafa (author), Silani, Mohammad (author), Yaghoubi Nasrabadi, V. (author), Concli, Franco (author)To design a more efficient energy absorber, it is critical to evaluate how changing the design parameters affects its performance, and also determine each one’s order of significance. In this paper, using a new approach, the behavior and response of straight, double-tapered, and triple-tapered thin-walled tubes with rectangular cross sections...conference paper 2023
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Tan, J. (author), Polinder, H. (author), Jarquin Laguna, A. (author), Miedema, S.A. (author)An adjustable draft point absorber was recently proposed as a novel approach to improve power absorption with constrained power take-off (PTO) capacities. The key feature of the novel wave energy converter (WEC) concept is to adjust the buoy draft by regulating the ballast water inside the buoy, which aims to enable variation of the natural...journal article 2023
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Grolman, Wouter (author)The demand for renewable energies is rising due to climate goals and high oil prices. Not only the established renewable sources like wind and solar are interesting to exploit. There is a vast amount of energy stored in the world’s oceans. To harvest this energy, one needs a Wave Energy Converter (WEC). There<br/>are already some prototype WECs...master thesis 2022
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Sun, J. (author)Atmospheric aerosols are solid or liquid particles suspended in the air. The majority of them are produced by natural processes, including sea salt from oceans, mineral dust from (semi-)arid regions, carbon containing particles from wildfires, and sulfates and ash from volcanic activities. Anthropogenic aerosols are produced by industrial...doctoral thesis 2022
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Wolffenbuttel, R.F. (author), Ghaderi, M. (author)The use of masked UV (i-line) lithography in a MEMS foundry for CMOS-compatible fabrication of large-area metasurface-based absorbers for the mid-infrared is demonstrated. The challenges are in: (a) the limited number of acceptable metals, (b) the thickness tolerance of the layers used in the CMOS process, and (c) the imaging capabilities of...journal article 2022
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Mourão Bento, H.F. (author), Ragni, D. (author), Avallone, F. (author), Simons, D.G. (author), Snellen, M. (author)Sound absorbing porous materials are used to line a wind tunnel wall, in order to reduce reflections. However, the lining can have a detrimental effect on the acoustic measurements due to an increase in the noise radiated from the walls. In addition, the aerodynamic fidelity of the tunnel can be affected. In the present study, the influence...journal article 2022
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Đo, Chinh Phuong (author)The material point method (MPM) is gaining increasing amounts of attention due to its capacity to solve geotechnical problems involving large-deformations. While some problems require dynamic analysis, simulating the (infinite) continuous domain using typical Dirichlet (fixed) boundary conditions induce spurious reflections causing (1)...master thesis 2021
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Loukogeorgaki, Eva (author), Michailides, Constantine (author), Lavidas, G. (author), Chatjigeorgiou, Ioannis K. (author)In this paper, we determine optimum layouts of a cluster of oblate spheroidal heaving point absorbers in front of a wall, that maximize the annual averaged power absorbed by the cluster, while satisfying specific spatial constraints. An iterative optimization process is developed by coupling a hydrodynamic model with a genetic algorithms solver....conference paper 2021
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Sun, J. (author), Veefkind, j. Pepijn (author), Van Velthoven, Peter (author), Levelt, Pieternel Felicitas (author)Quantitative measurements of aerosol absorptive properties, e.g., the absorbing aerosol optical depth (AAOD) and the single scattering albedo (SSA), are important to reduce uncertainties of aerosol climate radiative forcing assessments. Currently, global retrievals of AAOD and SSA are mainly provided by the ground-based aerosol robotic...journal article 2021
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Liu, Chenxi (author), Xu, Yanlin (author), Liu, H. (author), Lin, Mingtuan (author), Zha, Song (author)A terahertz metamaterial with switching characteristics from optical buffering to absorbing performance is realized by incorporating a phase-change film of vanadium dioxide. By introducing the electromagnetically induced transparency behavior based on simple strip pairs, the slow light effect with group delay up to 3.5 ps is obtained. When...journal article 2021
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Jahr, H. (author), Li, Y. (author), Zhou, J. (author), Zadpoor, A.A. (author), Schröder, AKi-Uwe (author)Treating large bone defects is still a clinical challenge without perfect solution, mainly due to the unavailability of suitable bone implants. Additively manufactured (AM) absorbable porous metals provide unparalleled opportunities to realize the challenging requirements for bone-mimetic implants. Firstly, multi-scale geometries of such...review 2021
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Hacking, Tim (author)Zero Emission Fuel (ZEF) has the goal to create affordable high-grade methanol, produced from absorbed carbon dioxide and water from the air. The methanol is produced in a solar methanol (MeOH) farm, consisting of 13225 micro-plants which are powered by PhotoVoltaicsolar panels (PV panels). The solar capacity of the solar MeOH farm is 12 MW and...master thesis 2019
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de Vries, Sybren (author)Although many studies have been performed on porous absorbable iron scaffolds created by the space holder method, no studies have considered the influence of variations in space holders on absorbable scaffolds. The present study aimed to clarify the effects of space holder particle size and volume fraction, on the pore structure, resultant...master thesis 2019
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van Haastert, Rutger (author)The electrification of drive trains in current and next generation vehicles require vibration dampers that possess different dynamic properties than its internal combustion engine counterparts. This makes research in automotive vibration damping a hot topic. Research in this field often contains the practice of Frequency Based Substructuring ...master thesis 2019
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- Christia, Ioanna (author), Tenpierik, M.J. (author), Setaki, F. (author), Bilow, M. (author) conference paper 2019
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van Vlijmen, Bruis (author), Goudswaard, Reinier (author), Boere, Remco (author), Schneider, Thomas (author), Polinder, H. (author), Lavidas, G. (author)It is expected that several identical Point Absorber Wave Energy Converters (PAWECs) will be arranged in arrays to form a Wave Energy Farm. One of the key challenges in designing such a WEC array is their spatial configuration, as the WECs in the farm interact hydrodynamically with each other. This study focuses on different potential PAWEC...conference paper 2019
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Alston, Mark E. (author), Pottgiesser, U. (author), Knaack, U. (author)The glazed envelopes on buildings play a major role in operational energy consumption as they define the boundary conditions between climate and thermal comfort. Such a façade is viewed as an uncontrolled load that sets the operational performance requirements for artificial lighting and air-cooling mechanical systems. This is in contrast to...journal article 2019
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Harsha, S. (author), Khakharia, Purvil (author), Huizinga, Arjen (author), Monteiro, Juliana (author), Goetheer, Earl (author), Vlugt, T.J.H. (author)The amine-based post combustion carbon capture process is one of the most advanced and preferred technologies to reduce CO2 emissions from point sources like power plants. The emissions of amine from capture plants is one of the biggest challenges faced by this technology. These emissions typically occur by means of aerosol/mist formation. To...journal article 2019