Searched for: subject:"conductivity"
(41 - 60 of 179)

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Wang, Z. (author), Turteltaub, S.R. (author), Abdalla, M.M. (author)
This work is concerned with the development of a framework to solve shape optimization problems for transient heat conduction problems within the context of isogeometric analysis (IGA). A general objective functional is used to accommodate both shape optimization and passive control problems under transient conditions. An adjoint sensitivity...
journal article 2017
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Marx, Philipp (author), Wanner, Andrea (author), Zhang, Zucong (author), Jin, H. (author), Tsekmes, I.A. (author), Smit, J.J. (author), Kern, Wolfgang (author), Wiesbrock, Frank (author)
Five types of nanofillers, namely, silica, surface-silylated silica, alumina, surface-silylated alumina, and boron nitride, were tested in this study. Nanocomposites composed of an epoxy/amine resin and one of the five types of nanoparticles were tested as dielectrics with a focus on (i) the surface functionalization of the nanoparticles and (ii...
contribution to periodical 2017
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Fanzio, P. (author), Cagliani, A. (author), Peterffy, K.G. (author), Sasso, L. (author)
The patterning of conductive polymers is a major challenge in the implementation of these materials in several research and industrial applications, spanning from photovoltaics to biosensors. Within this context, we have developed a reliable technique to pattern a thin layer of the conductive polymer poly(3,4-ethylenedioxythiophene) (PEDOT)...
journal article 2017
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Ahmadi Namin, Maryam (author)
This project, is aimed at making a device with TSVs (through silicon VIAs) interconnections using a new method based on vacuum filling with conductive nano-copper paste and by testing different diameter sizes and finding the best method and procedure for the fabrication of the chip.
Second ambition is filling the TSV interconnections, with a...
master thesis 2017
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Jiang, Bo (author), Ghaderi, M. (author), Bossche, A. (author), Visser, Jaco (author), Wolfenbuttel, R.F. (author)
Thermal impedance spectroscopy has been investigated as a non-destructive technique to determine the composition of ternary mixtures of biofuels. The principle of the thermal conductivity detector has been extended for measuring both the thermal conductivity and the thermal capacity of biofuel in the range between 1 to 100 Hz, using an AC...
conference paper 2017
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Noordam, A.F. (author)
For decades, researchers try to model the subsoil as accurate as possible in order to make cost-efficient and safe geotechnical decisions. A troublesome aspect in modelling of the soil is to determine the heterogeneity within the soil, as this is usually associated with a great deal of uncertainty. Delft University of Technology used a recursive...
master thesis 2016
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Wang, H. (author), Yang, Jun (author), Liao, Hui (author), Chen, Xianhua (author)
Electrically conductive asphalt concrete has the potential to satisfy multifunctional applications. Designing such asphalt concrete needs to balance the electrical and mechanical performance of asphalt concrete. The objective of this study is to design electrically conductive asphalt concrete without compromising on the mechanical properties...
journal article 2016
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Dermenakis, S. (author)
A heat switch is a variable thermal conductance device that can act as a thermal conductor or a thermal insulator. A gas-gap heat switch, which is currently in its third design iteration, has been developed by University of Twente in collaboration with the European Space Agency. This device is filled with a gas, whose thermal conductivity varies...
master thesis 2016
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Roussos, L. (author)
master thesis 2016
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Asrul, F. (author)
Naturally fractured reservoirs (NFRs) are important because they hold a significant quantity of oil reserves. Researchers build reservoir simulators to help them studying and predicting NFR performance. Some of them use the dual-porosity concept in their reservoir simulator, where the model consists of two continua: matrix and fracture. Fluid...
master thesis 2016
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Cai, Z. (author), van Veldhoven, Robert (author), Falepin, A (author), Suy, Hilco (author), Sterckx, E (author), Bitterlich, C. (author), Makinwa, K.A.A. (author), Pertijs, M.A.P. (author)
This paper reports a readout circuit for a resistive CO2 sensor, which operates by measuring the CO2-dependent thermal conductivity of air. A suspended hot-wire transducer, which acts both as a resistive heater and temperature sensor, exhibits a CO2-dependent heat loss to the surrounding air, allowing CO2 concentration to be derived from its...
journal article 2016
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Smit, B. (author)
Conductive polymers such as polyaniline, polypyrrole and PEDOT (poly(3,4-ethylenedioxythiophene)) have been used extensively to enhance the sensitivity, versatility and biocompatibility of electrochemical- and biosensors. Both their electrochemical stability and their mechanical properties make them highly suitable for applications that require...
master thesis 2016
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Dantuma, G.A. (author)
The topic of this thesis covers hydraulic conductivity determination with direct push methods. The most known direct push method is the Cone Penetration Test. Based on this technique a method was developed to determine the hydraulic conductivity. This method is based on water injection from the side of the probe into the soil. Pressure...
master thesis 2016
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Balidemaj, E. (author), van den Berg, CAT (author), van Lier, ALHMW (author), Nederveen, AJ (author), Stalpers, LJA (author), Crezee, H (author), Remis, R.F. (author)
Specific absorption rate (SAR) assessment is essential for safety purposes during MR acquisition. Online SAR assessment is not trivial and requires, in addition, knowledge of the electric tissue properties and the electric fields in the human anatomy. In this study, the potential of the recently developed CSI-EPT method to reconstruct SAR...
journal article 2016
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de Visser, P.J. (author), Chua, Rebekah (author), Island, J.O. (author), Finkel, M. (author), Katan, A.J. (author), Thierschmann, H.R. (author), van der Zant, H.S.J. (author), Klapwijk, T.M. (author)
Thin layers of black phosphorus present an ideal combination of a 2Dmaterial with a tunable direct bandgap and high carrier mobility. However the material suffers from degradation in ambient conditions due to an oxidation reaction which involves water, oxygen and light. Wehave measured the spatial profile of the conductivity on flakes of...
journal article 2016
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Didden, A. (author), Hillebrand, P. (author), Wollgarten, M. (author), Dam, B. (author), Van de Krol, R. (author)
Conductive TiN shells have been deposited on SiO2 nanoparticles (10–20 nm primary particle size) with fluidized bed atomic layer deposition using TDMAT and NH3 as precursors. Analysis of the powders confirms that shell growth saturates at approximately 0.4 nm/cycle at TDMAT doses of >1.2 mmol/g of powder. TEM and XPS analysis showed that all...
journal article 2016
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Schevers, R. (author)
This report describes the process of designing the Globus, a smart shirt that measures that back posture will working out by measuring the stretch in the shirt and uses vibration to give feedback to the user when they have an incorrect posture. A questionnaire has been carried out for this project which showed that fitness is the most practiced...
master thesis 2016
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Tsekmes, I.A. (author)
The addition of microsized fillers to polymers, in order to tailor their properties, has been extensively used in many industrial applications since the 1960s. The same approach applies to the field of electrical insulation. Epoxy resin is a widely used polymer in the electrical power sector, but it is usually loaded with microsized fillers,...
doctoral thesis 2016
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Moerland, R.J. (author), Hoogenboom, J.P. (author)
Available data: Complex refractive index of Indium Tin Oxide, http://dx.doi.org/10.4121/uuid:59febf27-a532-4ac9-8ec0-29d4195b2c8c Transparent conductive oxides (TCOs), such as the well-known indium-tin oxide, find widespread use in modern (nano)technological applications because of their unique combination of negligible optical absorption and...
journal article 2016
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Wang, Z.P. (author)
The recently developed isogeometric analysis (IGA) was aimed, from the start, at integrating computer aided design (CAD) and analysis. This synthesis of geometry and analysis has naturally led to renewed interest in developing structural shape optimization. The advantages of using isogeometric analysis in shape optimization are embodied in its...
doctoral thesis 2016
Searched for: subject:"conductivity"
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