Searched for: department:"Chemical%5C+Engineering"
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Grillo, F. (author), La Zara, D. (author), Kreutzer, M.T. (author), Ruud Van Ommen, J. (author)
Understanding the spontaneous organization of atoms on well-defined surfaces promises to enable control over the shape and size of supported nanostructures. Atomic layer deposition (ALD) boasts atomic-scale control in the synthesis of thin films and nanoparticles. Yet, the possibility to control the shape of ALD-grown nanostructures remains...
journal article 2018
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Kreutzer, M.T. (author), Parthiban, Pravien (author)
We experimentally and theoretically describe the dynamics of evolution and eventual rupture of Landau-Levich-Bretherton films of partially wetting liquids in microchannels in terms of nonplanar interface curvatures and disjoining pressure. While both the early-stage dynamics of film evolution and near-collapse dynamics of rupture are...
journal article 2018
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Gudjónsdóttir, S. (author), van der Stam, W. (author), Kirkwood, Nicholas (author), Evers, W.H. (author), Houtepen, A.J. (author)
Control over the charge density is very important for implementation of colloidal semiconductor nanocrystals into various optoelectronic applications. A promising approach to dope nanocrystal assemblies is charge injection by electrochemistry, in which the charge compensating electrolyte ions can be regarded as external dopant ions. To gain...
journal article 2018
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Perrier, D.L. (author), Rems, L. (author), Kreutzer, M.T. (author), Boukany, P. (author)
Transient permeabilisation of the cell membrane is a critical step to introduce drugs or DNA into living cells, yet challenging for both biological research and therapeutic applications. To achieve this, electroporation (or electropermeabilisation) has become a widely used method due to its simplicity to deliver almost any biomolecule to any...
journal article 2018
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Gnanasundaram, Nirmala (author), Venugopal, Aswin (author), Ullas, Gokul (author)
Circulating fluidized beds (CFB) play a major role in the chemical industry especially as heterogeneous catalytic reactors. Research on hydrodynamic properties of Liquid - Solid CFBs (LSCFB) is significantly under-reported as compared to Gas - Solid CFBs (GSCFB). Steadily, prominent research is being established in fields like food industry ...
journal article 2017
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Kawale, D. (author), Bouwman, G.W. (author), Sachdev, S. (author), Zitha, P.L.J. (author), Kreutzer, M.T. (author), Rossen, W.R. (author), Boukany, P. (author)
Molecular conformations of individual polymers during flow through porous media are directly observed by single-DNA imaging in microfluidics. As the Weissenberg number increases during flow (Wi > 1), we observe two types of elastic instabilities: (a) stationary dead-zone and (b) time-dependant dead-zone washing. When stretched polymer chains...
journal article 2017
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Bui, H.V. (author), Grillo, F. (author), Kulkarni, S.S. (author), Bevaart, Ronald (author), Nguyên, V.T. (author), van der Linden, B. (author), Moulijn, J.A. (author), Makkee, M. (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
We tailored the size distribution of Pt nanoparticles (NPs) on graphene nanoplatelets at a given metal loading by using low-temperature atomic layer deposition carried out in a fluidized bed reactor operated at atmospheric pressure. The Pt NPs deposited at low temperature (100 °C) after 10 cycles were more active and stable towards the...
journal article 2017
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Valdesueiro, David (author), Hettinga, Hans (author), Drijfhout, Jan Pieter (author), Lips, Priscilla (author), Meesters, G.M.H. (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
on the powder coating particles. The coating experiments were performed in a fluidized bed reactor at 1 bar and 27 °C, using a gas-phase coating...
journal article 2017
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Mulder, F.M. (author), Weninger, B. (author), Middelkoop, J. (author), Ooms, F.G.B. (author), Schreuders, H. (author)
Grid scale electricity storage on daily and seasonal time scales is required to accommodate increasing amounts of renewable electricity from wind and solar power. We have developed for the first time an integrated battery-electrolyser ('battolyser') that efficiently stores electricity as a nickel-iron battery and can split water into hydrogen...
journal article 2017
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Grillo, F. (author), Bui, H.V. (author), Moulijn, J.A. (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
We present an atomistic understanding of the evolution of the size distribution with temperature and number of cycles in atomic layer deposition (ALD) of Pt nanoparticles (NPs). Atomistic modeling of our experiments teaches us that the NPs grow mostly via NP diffusion and coalescence rather than through single-atom processes such as precursor...
journal article 2017
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Mytnyk, S. (author), Ziemecka, I. (author), Olive, A.G.L. (author), Totlani, K.A. (author), Oldenhof, S. (author), Kreutzer, M.T. (author), van Steijn, V. (author), van Esch, J.H. (author), van der Meer, J.W.M. (author)
We report the continuous production of microcapsules composed of an aqueous core and permeable hydrogel shell, made stable by the controlled photo-cross-linking of the shell of an all-aqueous double emulsion. While most previous work on water-based emulsions focused on active droplet formation, here double emulsion droplets were spontaneously...
journal article 2017
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Fabre, A. (author), Salameh, S. (author), Kreutzer, M.T. (author), van Ommen, J.R. (author)
Fluidization is a technique used to process large quantities of nanopowder with no solvent waste and a large gas–solid contact area. Nonetheless, nanoparticles in the gas phase form clusters, called agglomerates, due to the relatively large adhesion forces. The dynamics within the fluidized bed influence the mechanism of formation, and thus,...
journal article 2017
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Pimpalgaonkar, H.G. (author), van Steijn, V. (author), Kreutzer, M.T. (author), Kleijn, C.R. (author)
We present a finite volume implementation of a phase field method in OpenFOAM as a tool to simulate reactive multiphase flows on heterogeneous surfaces. Using this tool, we simulate the formation and growth of a droplet due to a chemical reaction on a hydrophilic catalytic patch surrounded by a hydrophobic wall. We compare the growth dynamics...
conference paper 2016
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Gorczak-Vos, N. (author)
Photoinduced charge transfer in organic materials is a fundamental process in various biological and technological areas. Donor-bridge-acceptor (DBA) molecules are used as model systems in numerous theoretical and experimental work to systematically study and unravel the underlying mechanisms of charge transfer. Despite the respectable successes...
doctoral thesis 2016
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Aulin, Y.V. (author)
The Sun is the main source of renewable energy on Earth. Our planet receives about 174 PW of solar power. At the same time, global energy consumption from all energy sources is orders of magnitude lower and is equal to approximately 16 TW. Clearly, solar energy has a tremendous potential, as well as numerous advantages over conventional sources...
doctoral thesis 2016
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Nasalevich, M.A. (author)
The research strategy followed in this work was inspired by natural photosynthesis that, for simplicity, can be divided into three principal steps: (i) efficient light absorption at wavelengths abundant in the solar light; (ii) long-lived charge separation achieved by funnelling of the photogenerated electrons away from the light-absorbing...
doctoral thesis 2016
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Dubey, R.K. (author), Inan, D. (author), Sengupta, S. (author), Sudhölter, E.J.R. (author), Grozema, F.C. (author), Jager, W.F. (author)
We report the synthesis and excited-state dynamics of a series of five bichromophoric light-harvesting antenna systems, which are capable of efficient harvesting of solar energy in the spectral range of 350–580 nm. These antenna systems have been synthesized in a modular fashion by the covalent attachment of blue light absorbing naphthalene...
journal article 2016
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Rassaei, L. (author)
The invention provides asensor device comprising a substrate, especially a needle with a needle tip, wherein the substrate, especially the needle, even more especially the needle tip, comprises a sensor unit, wherein the sensor unit includes a stacked layer structure including an electrode layer, wherein the stacked layer structure further...
patent 2016
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Valdesueiro Gonzalez, D. (author), Prabhu, M.K. (author), Guerra Nunez, C.R. (author), Sandeep, C. S Suchand (author), Kinge, S.S. (author), Siebbeles, L.D.A. (author), de Smet, L.C.P.M. (author), Meesters, G.M.H. (author), Kreutzer, M.T. (author), Houtepen, A.J. (author), van Ommen, J.R. (author)
Stability of quantum dot (QD) films is an issue of concern for applications in devices such as solar cells, LEDs, and transistors. This paper analyzes and optimizes the passivation of such QD films using gas-phase deposition, resulting in enhanced stability. Crucially, we deposited alumina at economically attractive conditions, room...
journal article 2016
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Schäfer, P. (author), Van der Veen, M.A. (author), Domke, K.F. (author)
To employ the full potential of electrochemical (ec) synthesis to grow metal–organic frameworks (MOFs) in more complex organizations at the mesoscale, it is vital to understand the underlying crystallization reaction pathway. For the MOF most typically grown electrochemically, CuBTC, we systematically investigated the role of oxygen species in...
journal article 2016
Searched for: department:"Chemical%5C+Engineering"
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