Searched for: subject%3A%22Mechanics%252C%255C%2BMaterials%255C%2Band%255C%2BStructures%22
(41 - 60 of 214)
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Gupta, D.K. (author), Langelaar, M. (author), van Keulen, F. (author), Barink, M. (author)This work introduces the application of Topology Optimization (TO) to design optimal front metallization patterns for solar cells and increase their power output. A challenging aspect of the solar cell electrode design problem is the strong nonlinear relation between the active layer current and the electrical potential. The power output of a...conference paper 2014
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van Deelen, J. (author), Klerk, L. (author), Barink, M. (author)There is a gap in efficiency between record thin film cells and mass produced thin film solar panels. In this paper we quantify the effect of monolithic integration on power output for various configurations by modeling and present metallization as a way to improve efficiency of solar panels. Grid design and finger dimension optimization was...article 2014
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Witvoet, G. (author), den Breeje, R. (author), Nijenhuis, J.R. (author), Hazelebach, R.L.M. (author), Doelman, N.J. (author)Segmented primary mirror telescopes require dedicated piston-tip-tilt actuators for optimal optical performance. Netherlands Organisation for Applied Scientific Research (TNO) has developed various prototypes of such actuators, in particular for the E-ELT. This paper presents the dynamics analysis and feedback control results for a specific two...article 2014
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Kusters, L.J.J. (author)De zelfrijdende auto mag de openbare weg nog niet op. Maar zodra het zover is, zijn we een ergernis armer. Als 10% van de auto's automatisch op elkaar kan reageren, hebben we een kwart minder files.article 2014
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Fischer, H.R. (author), Dillingh, E.C. (author), Hermse, C.G.M. (author)The objective of this work is to study the common features and the evolution of microstructures of bituminous binders regardless of their grade (PEN 10/20 to 160/220) and source/origin using the atomic force microscope operated in phase contrast mode. All bituminous binders show the same microstructural features, consisting of three distinct...article 2014
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Willemsen, D.M.C. (author), Stuiver, A. (author), Hogema, J. (author), Kroon, L. (author), Sukumar, P. (author)There is a trend in Advanced Driver Assistance systems towards increased automation. Current systems and near-future systems will not yet be able to deal with all different situations that can be encountered and therefore need to share control of the vehicle with the driver. To safely and comfortably share control, a method for the transition of...conference paper 2014
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Myny, K. (author), Smout, S. (author), Rockelé, M. (author), Bhoolokam, A. (author), Ke, T.H. (author), Steudel, S. (author), Cobb, B. (author), Gulati, A. (author), Rodriguez, F.G. (author), Obata, K. (author), Marinkovic, M. (author), Pham, D.V. (author), Hoppe, A. (author), Gelinck, G.H. (author), Genoe, J. (author), Dehaene, W. (author), Heremans, P. (author)The Internet of Things is driving extensive efforts to develop intelligent everyday objects. This requires seamless integration of relatively simple electronics, for example through ‘stick-on’ electronics labels. We believe the future evolution of this technology will be governed by Wright’s Law, which was first proposed in 1936 and states that...article 2014
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Shoeibi Omrani, P. (author), Veltin, J. (author), Turkenburg, D.H. (author)This paper discusses the effect of drag reducing polymers on the Tubing Performance Curve (TPC) of vertical air-water flows at near atmospheric conditions. The effect of polymer concentration, liquid and gas flow rates on the pressure drop curve (Tubing Performance Curve) was investigated experimentally. The results showed that polymers tend to...conference paper 2014
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Xu, M. (author), Wachters, A.J.H. (author), van Deelen, J. (author), Mourad, M.C.D. (author), Buskens, P.J.P. (author)We present a systematic study of the effect of variation of the zinc oxide (ZnO) and copper indium gallium (di)selenide (CIGS) layer thickness on the absorption characteristics of CIGS solar cells using a simulation program based on finite element method (FEM). We show that the absorption in the CIGS layer does not decrease monotonically with...article 2014
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Yan, J. (author), Zeng, X. (author), Ren, T. (author), van der Heide, E. (author)Emulsion lubrication is widely used in metal forming operations and has potential applications in the biomedical field, yet the emulsion lubrication mechanism is not well understood. This work explores the possibilities of three different oil-in-water (O/W) emulsions containing dibutyl octadecylphosphoramidate (DBOP), 6-octadecyl-1,3,6,2...article 2014
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Jolt Oostra, A. (author), Blom, P.W.M. (author), Michels, J.J. (author)Pinholes in the emitting layer of an organic light emitting diode (OLED), e.g. induced by particle contamination or processing flaws, lead to direct contact between the hole-injection layer (HIL) and the cathode. The resulting short circuits give rise to catastrophic device failure. We demonstrate that these short circuits can be effectively...article 2014
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Mastrangeli, M. (author), Arutinov, G. (author), Smits, E.C.P. (author), Lambert, P. (author)Originally applied to the accurate, passive positioning of submillimetric devices, recent works proved capillary self-alignment as effective also for larger components and relatively large initial offsets. In this paper, we describe an analytic quasi-static model of 1D capillary restoring forces that generalizes existing geometrical models and...article 2014
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van der Horst, A.R.A. (author), de Goede, M. (author), de Hair-Buijssen, S.H.H.M. (author), Methorst, R. (author)In The Netherlands, on bicycle paths, single-bicycle accidents, bicycle-bicycle and bicycle-moped accidents constitute a considerable share of all bicyclist injuries. Over three quarters of all hospitalised bicyclist victims in the Netherlands cannot be directly related to a crash with motorised traffic. As the usage of bicycle paths steadily...article 2014
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Boersma, A. (author), van Ee, R.J. (author), Stevens, R.S.A. (author), Saalmink, M. (author), Charlton, M.D.B. (author), Pollard, M.E. (author), Chen, R. (author), Kontturi, V. (author), Karioja, P. (author), Alajoki, T. (author)This paper describes experimental measurement results for photonic crystal sensor devices which have been functionalized for gas sensing applications. The sensor consists of a two dimensional photonic crystal etched into a slab waveguide having a refractive index of 1.7-1.9. Test devices were fabricated from SiON material on silicon/ silicon...conference paper 2014
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Li, F. (author), Smits, E. (author), van Leuken, L. (author), Haas, D.G. (author), Ellis, T. (author), van der Steen, J.L. (author), Tripathi, A.K. (author), Myny, K. (author), Ameys, M. (author), Schols, S. (author), Heremans, P. (author), Gelinck, G.H. (author)AMOLED displays using oxide TFTs and high-quality moisture barrier were fabricated on ultrathin, flexible plastic substrates to give maximum mechanical flexibility. Total display thickness is below 150μm, and repeated rollability at 1 cm roll radius has been demonstrated. Electrical/Mechanical characteristics and reliability of the flexible...article 2014
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Bisselink, R. (author), Steeghs, W. (author), Brouwer, J.G.H. (author)Abstract: The increasing amount of electronics, such as consumer products and green technologies (e.g. solar PV cells) increases the demand of metals such as indium and gallium. This increasing demand together with the dependency on import of these metals drive research on recycling of waste electronics from secondary sources, so called urban...conference paper 2014
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den Bakker, A.J. (author), Werkhoven, R.J. (author), Sillekens, W.H. (author), Katgerman, L. (author)Longitudinal weld seams are an intrinsic feature in hollow extrusions produced with porthole dies. As these joins occur along the entire extruded length, it is desirable that these weld seams have a minimal impact on the structural integrity of the extrudate. In particular, defects associated with weld seam formation should be avoided. In this...article 2014
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Flötgen, C. (author), Pawlak, M. (author), Pabo, E. (author), van de Wiel, H.J. (author), Hayes, G.R. (author), Dragoi, V. (author)Wafer-level Cu-Sn intermetallic bonding is an interesting process for advanced applications in the area of MEMS and 3D interconnects. The existence of two intermetallic phases for Cu-Sn system makes the wafer bonding process challenging. The impact of process parameters on final bonding layer quality have been investigated for transient liquid...article 2014
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Naithani, S. (author), Mandamparambil, R. (author), Fledderus, H. (author), Schaubroeck, D. (author), van Steenberge, G. (author)The fast-growing market of organic electronics stimulates the development of versatile technologies for structuring thin-film materials. Ultraviolet lasers have proven their full potential for patterning organic thin films, but only a few studies report on interaction with thin-film barrier layers. In this paper, we present an approach in which...article 2014
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Kouters, M.H.M. (author), Slot, H.M. (author), van Zwieten, W. (author), van der Veer, J. (author)Hydrogen is used as a process gas in vacuum environments for semiconductor manufacturing equipment. If hydrogen dissolves in metallic components during operation it can result in hydrogen embrittlement. In order to assess if hydrogen embrittlement occurs in such a vacuum environment a special fatigue test has been developed. Accelerated life...article 2014
Searched for: subject%3A%22Mechanics%252C%255C%2BMaterials%255C%2Band%255C%2BStructures%22
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