Search Results - "Koops, G"

Piezoresistive heat engine and refrigerator by Steeneken, P. G., Le Phan, K., Goossens, M. J., Koops, G. E. J., Brom, G. J. A. M., van der Avoort, C., van Beek, J. T. M.

“…Heat engines provide most of our mechanical power and are essential for transportation on the macroscopic scale. However, although significant progress has…”
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Ultralow-k Dielectrics Made by Supercritical Foaming of Thin Polymer Films by Krause, B., Koops, G.-H., van der Vegt, N.F.A., Wessling, M., Wübbenhorst, M., van Turnhout, J.

“…Ultralow dielectric constants have been achieved for thin porous films of high‐Tg polymers. Rapid solid‐state polymer expansion applying supercritical carbon…”
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Solar driven membrane pervaporation for desalination processes by Zwijnenberg, H.J., Koops, G.H., Wessling, M.

“…We describe details of a solar driven pervaporation process for the production of desalinated water from highly contaminated waters. The membrane material is a…”
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Intermediate polymer to carbon gas separation membranes based on Matrimid PI by Barsema, J.N., Klijnstra, S.D., Balster, J.H., van der Vegt, N.F.A., Koops, G.H., Wessling, M.

“…Matrimid polyimide gas separation membranes were exposed to different heat treatments between 300 and 525 °C to investigate the intermediate structures that…”
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High performance micro-engineered hollow fiber membranes by smart spinneret design by Nijdam, W., de Jong, J., van Rijn, C.J.M., Visser, T., Versteeg, L., Kapantaidakis, G., Koops, G.-H., Wessling, M.

“…Can hollow fiber membranes be produced in other geometries than circular? If so, are membrane properties maintained and what could be the possible benefits of…”
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The development of electro-membrane filtration for the isolation of bioactive peptides: the effect of membrane selection and operating parameters on the transport rate by Bargeman, G., Koops, G.-H., Houwing, J., Breebaart, I., van der Horst, H.C., Wessling, M.

“…The ability to produce functional food ingredients from natural sources becomes increasingly attractive to the food industry. Antimicrobial (bioactive)…”
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Direct fluorination—Useful tool to enhance commercial properties of polymer articles by Kharitonov, A.P., Taege, R., Ferrier, G., Teplyakov, V.V., Syrtsova, D.A., Koops, G.-H.

“…Fundamental features and industrial applications of the direct fluorination of polymers are reviewed. Fundamental features of the direct fluorination of a set…”
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CO2 Plasticization of polyethersulfone/polyimide gas-separation membranes by Kapantaidakis, G. C., Koops, G. H., Wessling, M., Kaldis, S. P., Sakellaropoulos, G. P.

“…This work reports the CO2 plasticization of gas‐separation hollow‐fiber membranes based on polyimide and polyethersulfone blends. The feed pressure effect on…”
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On the subtle balance between competitive sorption and plasticization effects in asymmetric hollow fiber gas separation membranes by Visser, T., Koops, G.H., Wessling, M.

“…The paper describes the influence of a varying feed composition of CO 2/CH 4 and CO 2/N 2 mixtures on the gas separation performance of integrally skinned…”
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Characterization of morphology controlled polyethersulfone hollow fiber membranes by the addition of polyethylene glycol to the dope and bore liquid solution by Liu, Y, Koops, G.H, Strathmann, H

“…The preparation of polyethersulfone (PES) hollow fiber membranes has been studied using N-methylpyrrolidone (NMP) as solvent, polyethylene glycol 400 (PEG 400)…”
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Improving gas separation properties of polymeric membranes based on glassy polymers by gas phase fluorination by Syrtsova, D.A, Kharitonov, A.P, Teplyakov, V.V, Koops, G.-H

“…The application area of existing gas separation membranes is limited by commercially available polymers for their preparation. In many cases the separation…”
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Effect of spinning conditions on the structure and the gas permeation properties of high flux polyethersulfone—polyimide blend hollow fibers by Kapantaidakis, G.C., Koops, G.H., Wessling, M.

“…In this work, the effects of major spinning parameters, such as: polymer concentration, air gap distance, bore fluid composition, and take-up velocity on the…”
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Preparation and characterization of gas separation hollow fiber membranes based on polyethersulfone-polyimide miscible blends by Kapantaidakis, G.C., Koops, G.H., Wessling, M.

“…In this work the preparation and characterization of gas separation hollow fibers based on polyethersulfone Sumikaexcel (PES) and polyimide Matrimid 5218 (PI)…”
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Split-gate Resurf Stepped Oxide (RSO) MOSFETs for 25V applications with record low gate-to-drain charge by Goarin, P., Koops, G.E.J., van Dalen, R., Le Cam, C., Saby, J.

“…This paper presents a split-gate version of the Resurf Stepped Oxide (RSO) MOSFET. Splitting the gate enables a drastic reduction of the gate-to-drain…”
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Design optimization of field-plate assisted RESURF devices by Boksteen, B. K., Ferrara, A., Heringa, A., Steeneken, P. G., Koops, G. E. J., Hueting, R. J. E.

“…A mathematical model for optimizing the 2-D potential distribution in the drift region of field-plate (FP)-assisted RESURF devices (Fig. 1) is presented. The…”
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Separation of linear hydrocarbons and carboxylic acids from ethanol and hexane solutions by reverse osmosis by Koops, G.H., Yamada, S., Nakao, S.-I.

“…In this study, asymmetric cellulose acetate membranes with moderate NaCl rejection (85.5%) were prepared and used to study the influence of the chemical nature…”
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Polyimide hollow fiber gas separation membranes: preparation and the suppression of plasticization in propane/propylene environments by Krol, J.J., Boerrigter, M., Koops, G.H.

“…Asymmetric hollow fiber membranes were prepared using the polyimide Matrimid ® 5218. The fibers had an effective top layer thickness of 0.3–0.4 μm. The fibers…”
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High flux polyethersulfone–polyimide blend hollow fiber membranes for gas separation by Kapantaidakis, G.C., Koops, G.H.

“…In this work, the preparation of gas separation hollow fibers based on polyethersulfone Sumikaexcel (PES) and polyimide Matrimid 5218 (PI) blends, for three…”
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Transdermal timolol delivery from a Pluronic gel by Stamatialis, D.F., Rolevink, H.H.M., Koops, G.H.

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Towards single step production of multi-layer inorganic hollow fibers by de Jong, J, Benes, N.E, Koops, G.H, Wessling, M

“…In this work we propose a generic synthesis route for the single step production of multi-layer inorganic hollow fibers, based on polymer wet spinning combined…”
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