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Jacobs, P. (author), Khoury, E. (author), Klerk, M. (author), Valkema, M. (author)We have developed a ventilation system to tackle indoor climate problems in existing schools. Core of the system is an balanced ventilation system with heat recovery. The heat exchanger is also used for indirect adiabatic cooling. For filtering a high efficiency and low pressure drop electrostatic filtration system has been developed. The...conference paper 2022
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Simicic, M. (author), Ashif, N.R. (author), Hellings, G. (author), Chen, S.H. (author), Nag, M. (author), Kronemeijer, A.J. (author), Myny, K. (author), Linten, D. (author)The thin-film-transistor (TFT) technology has attracted significant attention in account of the possibility to manufacture transistors on large and flexible substrates, at low processing temperatures and at a low cost. Next to the well-established amorphous silicon TFT technology used mostly for displays, the amorphous Indium-Gallium-Zinc-Oxide ...article 2020
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Mirahmadi, F. (author), Koolstra, J.H. (author), Fazaeli, S. (author), Lobbezoo, F. (author), van Lenthe, G.H. (author), Snabel, J. (author), Stoop, R. (author), Everts, V. (author)Nutrition of articular cartilage relies mainly on diffusion and convection of solutes through the interstitial fluid due to the lack of blood vessels. The diffusion is controlled by two factors: steric hindrance and electrostatic interactions between the solutes and the matrix components. Aging comes with changes in the cartilage structure and...article 2019
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van Es, M.H. (author), van Riel, M.C.J.M. (author), Duivenvoorde, T. (author), Sadeghian Marnani, H. (author)Scanning Subsurface Ultrasonic Force Microscopy (SSURFM) relies on high frequency ultrasound in combination with Atomic Force Microscopy to detect viscoelastic properties of buried materials with high spatial resolution. The key ingredient is a very high frequency ultrasound wave which is amplitude modulated at the sensing cantilevers resonance...other 2019
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Mertens, J. (author), Khakharia, P.M. (author), Rogiers, P. (author), Blondeau, J. (author), Lepaumier, H. (author), Goetheer, E.L.V. (author), Schallert, B. (author), Schaber, K. (author), Moretti, I. (author)This study presents the results of two field tests that aimed at evaluating two countermeasures (WESP and GGH) toavoid acid mist formation. A WESP is shown to be very efficient for the removal of nuclei from the flue gas (100 % efficient) and thus can prevent aerosol formation inside an amine based absorber. This is however only valid in the...article 2017
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Cai, R. (author), Kassa, H.G. (author), Haouari, R. (author), Marrani, A. (author), Geerts, Y.H. (author), Ruzié, C. (author), van Breemen, A.J.J.M. (author), Gelinck, G.H. (author), Nysten, B. (author), Hu, Z. (author), Jonas, A.M. (author)Ferroelectric materials are important components of sensors, actuators and non-volatile memories. However, possible device configurations are limited due to the need to provide screening charges to ferroelectric interfaces to avoid depolarization. Here we show that, by alternating ferroelectric and semiconducting nanowires over an insulating...article 2016
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Mertens, J. (author), Anderlohr, C. (author), Rogiers, P. (author), Brachert, L. (author), Khakharia, P.M. (author), Goetheer, E.L.V. (author), Schaber, K. (author)This study is to our knowledge the first to evaluate the potential of a wet electrostatic precipitator (WESP) to prevent aerosol formation issues inside amine based carbon capture installations. A WESP is a suitable option since this study proves that it is very efficient for the removal of the mist precursors inside the flue gas to be treated....article 2014
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Jacobs, P. (author), Phaff, J.C. (author), Voogt, M.H. (author)An intervention study with a decentral electrostatic filter has been carried out in a nursery. The field study shows that it is possible to reach a reduction up to 80% of ultra-fine (<0.1 μm) and up to 68% for the PM1 and PM2,5-PM1 fractions at a relatively low energy consumption. These particle fractions were mostly determined by the outdoor...conference paper 2014
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Design, fabrication and characterization of electrostatic micro actuators for microfluidic platformsPatrascu, M. (author), Gonzalo-Ruiz, J. (author), Goedbloed, M. (author), Crego-Calama, M. (author), Brongersma, S.H. (author)Microfluidic devices for lab-on-a-chip applications have become obvious in the past decade. Often, small amounts of liquids need to be handled accurately and at a low power cost. Especially when autonomy is desired, the presence of on-chip micro actuators becomes obvious. In this paper, a novel family of microfluidic devices based on the...conference paper 2011
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Altena, G. (author), Hohlfeld, D. (author), Elfrink, R. (author), Goedbloed, M.H. (author), van Schaijk, R. (author)This paper reports on the design, modelling, fabrication and characterization of an electret-based MEMS electrostatic energy harvester with an elegant and robust process flow. The fabrication is based on a SOI wafer with self-aligned electrodes of the variable capacitor. The output current of the device shows distinct steps that are caused by...conference paper 2011
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Hemery, Y.M. (author), Anson, N.M. (author), Havenaar, R. (author), Haenen, G.R.M.M. (author), Noort, M.W.J. (author), Rouau, X. (author), TNO Kwaliteit van Leven (author)This study evaluated the potential of using ultra-fine grinding and electrostatic separation of wheat bran as methods to improve the bioaccessibility of para-coumaric acid (pCA), sinapic acid (SA) and ferulic acid (FA) from bran-rich breads. Bran fractions were produced and used to bake white bread, whole-grain bread, and seven different bran...article 2010
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van der Kamp, J.W. (author), TNO Kwaliteit van Leven (author)Obesity and related diseases, including cardiovascular diseases and type-2 diabetes is developing into a world wide epidemic, with a major impact on the quality of life of a growing part of the world's population and on costs of health care. Recent reviews of large scale cohort indicate that dietary shifts from refined grain products to whole...conference paper 2009
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Kudryashova, E.V. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author), KvL (author)The possibility of modulating the mesoscopic properties of food colloidal systems by the dielectric constant is studied by determining the impact of small amounts of ethanol (10%) on the adsorption of egg white ovalbumin onto the air-water interface in the absence and presence of pectin. The adsorption kinetics was monitored using tensiometry....article 2008
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Broersen, K. (author), Weijers, M. (author), de Groot, J. (author), Hamer, R.J. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)This study describes how charge modification affects aggregation of ovalbumin, thereby distinguishing the role of conformational and electrostatic stability in the process. Ovalbumin variants were engineered using chemical methylation or succinylation to obtain a range of protein net charge from -1 to -26. Charge modification significantly...article 2007
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Ganzevles, R.A. (author), Kosters, H. (author), van Vliet, T. (author), Stuart, M.A.C. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)Because the formation of protein/polysaccharide complexes is dominated by electrostatic interaction, polysaccharide charge density is expected to play a major role in the adsorption behavior of the complexes. In this study, pullulan (a non-charged polysaccharide) carboxylated to four different charge densities (fraction of carboxylated subunits:...article 2007
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Broersen, K. (author), Elshof, M. (author), de Groot, J. (author), Voragen, A.G.J. (author), Hamer, R.J. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)A large number of proteins are glycosylated, either in vivo or as a result of industrial processing. Even though the effect of glycosylation on the aggregation of proteins has been studied extensively in the past, some reports show that the aggregation process is accelerated, whereas others found that the process is inhibited by glycosylation....article 2007
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Ganzevles, R.A. (author), Zinoviadou, K. (author), van Vliet, T. (author), Stuart, M.A.C. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)There is a large interest in mixed protein/polysaccharide layers at air-water and oil-water interfaces because of their ability to stabilize foams and emulsions. Mixed protein/polysaccharide adsorbed layers at air-water interfaces can be prepared either by adsorption of soluble protein/ polysaccharide complexes or by sequential adsorption of...article 2006
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Ganzevles, R.A. (author), Cohen Stuart, M.A. (author), Vliet, T.v. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)In order to understand foaming behaviour of mixed protein/anionic polysaccharide solutions, we investigated the effect of β-lactoglobulin/pectin interaction in the bulk on β-lactoglobulin adsorption to the air-water interface. Adsorption kinetics were evaluated by following surface pressure development in time of several pure protein solutions...article 2006
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Kudryashova, E.V. (author), Visser, A.J.W.G. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)In this study the relation between the ability of protein self-association and the surface properties at air-water interfaces is investigated using a combination of spectroscopic techniques. Three forms of chicken egg ovalbumin were obtained with different self-associating behavior: native ovalbumin, heat-treated ovalbumin-being a cluster of 12...article 2005
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Wierenga, P.A. (author), Meinders, M.B.J. (author), Egmond, M.R. (author), Voragen, A.G.J. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)In this study a set of chemically engineered variants of ovalbumin was produced to study the effects of electrostatic charge on the adsorption kinetics and resulting surface pressure at the air-water interface. The modification itself was based on the coupling of succinic anhydride to lysine residues on the protein surface. After purification of...article 2005
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