- document
-
de Boer, J.G.G.M. (author), Hofmeyer, H. (author), Maljaars, J. (author), van Herpen, R.A.P. (author)A self-supporting sandwich panel facade system under fire is studied. First, a thermomechanical FE model, which comprises the complete facade system, and incorporates material degradation and geometrical nonlinear behaviour except for the insulation material and connections, is loaded by a fire temperature curve. Eurocode design rules then...article 2019
- document
- Papadopoulos, N. (author), Steudel, S. (author), Kronemeijer, A.J. (author), Ameys, M. (author), Myny, K. (author) conference paper 2019
- document
-
von Benda-Beckmann, A.M. (author), Thomas, L. (author), Tyack, P.L. (author), Ainslie, M.A. (author)Passive acoustic monitoring with widely-dispersed hydrophones has been suggested as a cost-effective method to monitor population densities of echolocating marine mammals. This requires an estimate of the area around each receiver over which vocalizations are detected - the "effective detection area" (EDA). In the absence of auxiliary...article 2018
- document
-
van Gulik, R.J.J. (author), de Boer, B.M. (author), Harmsma, P.J. (author)In this paper, we compare ring resonator and three-port Mach-Zehnder Interferometer (MZI) devices fabricated on silicon-on-insulator for the purpose of refractive index sensing. Their respective sensitivities and limits of detection (LOD) were determined with NaCl solutions. A sensitivity of 113.07 nm per refractive index unit (RIU) and LOD of 2...article 2017
- document
-
Tang, Y. (author), Xi, Z. (author), Xu, M. (author), Bäumer, S.M.B. (author), Adam, A.J.L. (author), Urbach, H.P. (author)Hyperbolic metamaterials (HMMs) are anisotropic materials with a permittivity tensor that has both positive and negative eigenvalues. Here we report that by using a type II HMM as a cladding material, a waveguide that only supports higher-order modes can be achieved, while the lower-order modes become leaky and are absorbed in the HMM cladding....article 2016
- document
-
Bodin, J. (author), Kocbach Bølling, A. (author), Wendt, A. (author), Eliasson, L. (author), Becher, R. (author), Kuper, F. (author), Løvik, M. (author), Nygaard, U.C. (author)Type 1 diabetes mellitus (T1DM) is an autoimmune destruction of insulin producing pancreatic beta-cells due to a genetic predisposition and can be triggered by environmental factors. We have previously shown that bisphenol A (BPA) accelerates the spontaneous development of diabetes in non-obese diabetic (NOD) mice. Here, we hypothesized that...article 2015
- document
-
Bodin, J. (author), Bølling, A.B. (author), Becher, R. (author), Kuper, F. (author), Løvik, M. (author), Nygaard, U.C. (author)Diabetes mellitus type 1 is an autoimmune disease with a genetic predisposition that is triggered by environmental factors during early life. Epidemiological studies show that bisphenol A (BPA), an endocrine disruptor, has been detected in about 90% of all analyzed human urine samples. In this study, BPA was found to increase the severity of...article 2014
- document
-
Vuorinen, T. (author), Janka, M. (author), Rubingh, J.E.J.M. (author), Tuukkanen, S. (author), Groen, P. (author), Lupo, D. (author)In applications such as organic light emitting diodes (OLEDs) or photovoltaic cells a homogenous voltage distribution in the large anode layer needs to be ensured by including a metal grid with a transparent conductor layer. To ensure sufficient conductivity, relatively thick metal lines are used, which increases the risk of electrical shorts...conference paper 2014
- document
-
Verreault, J. (author)The Penetrator with Enhanced Lateral Effect (PELE) is a type of explosive-free projectile that undergoes radial fragmentation upon an impact with a target plate. This type of projectile is composed of a brittle cylindrical shell (the jacket) filled in its core with a material characterized with a large Poisson's ratio. Upon an impact with a...conference paper 2014
- document
-
Berkhoff, A.P. (author), Ho, J.H. (author)Air cavities between plates are often used to improve noise insulation by passive means, especially at high frequencies. Such configurations may suffer from resonances, such as due to the mass-air-mass resonance. Lightweight structures, which tend to be undamped, may suffer from structural resonances as well. Active methods have been suggested...conference paper 2013
- document
- Westerveld, W.J. (author), Pozo Torres, J.M. (author), Harmsma, P.J. (author), Schmits, R. (author), Tabak, E. (author), van den Dool, T.C. (author), Leinders, S.M. (author), van Dongen, K.W.A. (author), Urbach, H.P. (author), Yousefi, M. (author) article 2012
- document
-
Westerveld, W.J. (author), Pozo Torres, J.M. (author), Nieuwland, R.A. (author), Leinders, S.M. (author), van Dongen, K.W.A. (author), Yousefi, M. (author)We present a detailed characterization of a set of microring resonators with bent radii of 1.5 μm, fabricated in silicon-on-insulator technology. Results are in good agreement with the universal relations for coupling between microresonators and dielectric waveguides.conference paper 2012
- document
-
Westerveld, W.J. (author), Leinders, S.M. (author), van Dongen, K.W.A. (author), Urbach, H.P. (author), Yousefi, M. (author)Marcatili's famous approximate analytical description of light propagating through rectangular dielectric waveguides, published in 1969, gives accurate results for low-index-contrast waveguides. However, photonic-integrated circuit technology has advanced to high-index-contrast (HIC) waveguides. In this paper, we improve Marcatili's model by...article 2012
- document
-
Westerveld, W.J. (author), Leinders, S.M. (author), Pozo Torres, J.M. (author), van Dongen, K.W.A. (author), Yousefi, M. (author), Urbach, H.P. (author)Marcatili’s famous approximate analytical description of light propagating through rectangular dielectric waveguides, published in 1969, gives accurate results for low-indexcontrast waveguides. However, silicon-on-insulator (SOI) technology has become one of the focus platforms for integrated optics over the last decade, and the silicon...conference paper 2012
- document
-
Matters-Kammerer, M.K. (author), Jinesh, K.B. (author), Rijks, T.G.S.M. (author), Roozeboom, F. (author), Klootwijk, J.H. (author)A detailed electrical analysis of multiple layer trench capacitors fabricated in silicon with atomic-layer-deposited Al 2O 3 and TiN is presented. It is shown that in situ ozone annealing of the Al 2O 3 layers prior to the TiN electrode deposition significantly improves the electric properties of the devices such as the dielectric constant,...article 2012
- document
-
Westerveld, W.J. (author), Pozo Torres, J.M. (author), Harmsma, P.J. (author), Schmits, R. (author), Tabak, E. (author), Leinders, S.M. (author), van Dongen, K.W.A. (author), Urbach, H.P. (author), Yousefi, M. (author)Recently there has been a growing interest in sensing by means of optical microring resonators in photonic integrated circuits (PIC) that are fabricated in silicon-on-insulator (SOI) technology. Taillaert et al. proposed the use of a waveguide based ring resonator as a strain gauge. However, the strong lateral confinement of the light in SOI...conference paper 2011
- document
-
Westerveld, W.J. (author), Urbach, H.P. (author), Yousefi, M. (author)We present an accurate and fast 3-D simulation scheme for out-of-plane grating couplers, based on 2-D rigorous [finite difference time domain (FDTD)] grating simulations, the effective index method, and the RayleighSommerfeld diffraction formula. In comparison with full 3-D FDTD simulations, the rms difference in electric field is below 5% and...article 2011
- document
-
Clairbois, J.-P. (author), de Roo, F. (author), Garai, M. (author), Conter, M. (author), Defrance, J. (author), Oltean-Dumbrava, C. (author), Fusco, I. (author)The research QUIESST (QUIetening the Environment of Sustainable Surface Transport) successfully started in November 2009 for 36 months, its objectives and work schedule have already been presented at the INTERNOISE 2010 Congress. This paper will present the progress report at mid-term (18 months): the technical work packages are WP2 ...conference paper 2011
- document
-
Westerveld, W.J. (author), Harmsma, P.J. (author), Schmits, R. (author), Tabak, E. (author), Pozo Torres, J.M. (author), Urbach, H.P. (author), Yousefi, M. (author)Silicon-on-insulator (SOI) technology has become one of the focus platforms for photonic integrated circuits (PICs). The CMOS technology opens the possibility for reliable mass fabrication of cost-effective photonic circuits. Recently there has been a growing interest in direct optical sensing of, for example, temperature, pressure or strain,...conference paper 2011
- document
-
Li, X. (author), Smaal, W.T.T. (author), Kjellander, C. (author), van der Putten, B. (author), Gualandris, K. (author), Smits, E.C.P. (author), Anthony, J. (author), Broer, D.J. (author), Blom, P.W.M. (author), Genoe, J. (author), Gelinck, G.H. (author)We present a systematic study of the influence of material composition and ink-jet processing conditions on the charge transport in bottom-gate field-effect transistors based on blends of 6,13-bis(triisopropyl-silylethynyl) pentacene (TIPS-PEN) and polystyrene. After careful process optimizations of blending ratio and printing temperature we...article 2011