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Khanbareh, H. (author), van der Zwaag, S. (author), Groen, W.A. (author)Functional granular composites of lead titanate particles in an epoxy matrix prepared by dielectrophoresis show enhanced dielectric, piezoelectric and pyroelectric properties compared to 0-3 composites for different ceramic volume content from 10% to 50%. Two structuring parameters, the interparticle distance and the percentage of 1-3...article 2014
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Friele, L.F.C. (author), Vezelinstituut TNO (author)The degradation of a series of synthetic‐fibre yarns was studied during a period of two years' exposure in the open. Yarns of the same type were exposed in the Xenotest under a variety of conditions and the fading of the SDC blue standards was similarly studied. Air temperature, black‐panel temperature, and humidity content were measured for...article 1963
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- de Jong, J.D. (author), TNO Bouw en Ondergrond (author) article 2006
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Huisman, R. (author), Paalvast, S. (author), Brandl, B.R. (author), van den Dool, T.C. (author), Eggens, M. (author), Janssen, H. (author), Aitink-Kroes, G. (author), Molster, F. (author), Teuwen, M. (author), Venema, L. (author), Jayawardhana, B. (author)We present the main results of the performance test campaign of the Mid-Infrared European Extremely Large Telescope Imager and Spectrograph (METIS) Cold Chopper Demonstrator (MCCD). This tip/tilt mirror, which operates at a temperature of 77 K, is one of the critical components in the METIS for the European Extremely Large Telescope. The...article 2016
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- ten Veen, G.B. (author), Metaalinstituut TNO (author) article 1964
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- Polder, R.B. (author), Gulikers, J.J. (author), TNO Bouw (author) article 2001
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Maljaars, J. (author), van Dooren, F.J. (author), de Jong, A.F.N. (author)Veel bestaande stalen verkeersbruggen in het rijkswegennet van Nederland zijn uitgerust met een orthotroop rijdek met trogprofielen als verstijvers. Deze rijdekken zijn vaak onderhevig aan zwate vermoeiingsbelasting door het verkeer waardoor, onder andere, scheuren in de dekplaat kunnen optreden. Hoe ontstaan deze scheuren en hoe worden ze in...article 2012
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van Deelen, J. (author), Barink, M. (author)Innovation in the field of thin-film cells, in addition to economy of scale and the manufacturing learning curve, is an important element in keeping the price of this technology competitive. Most papers on these cells focus on their technology; however, the economic potential of the technology is also important. Of even greater significance, a...article 2017
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Asadi, K. (author), Wondergem, H.J. (author), Moghaddam, R.S. (author), McNeill, C.R. (author), Stingelin, N. (author), Noheda, B. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)The operation of resistive switches based on phase-separated blends of organic ferroelectrics and semiconductors depends significantly on the microstructure of such systems. A wide range of analysis techniques are used to characterize spin-coated films of the ferroelectric random copolymer poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)...article 2011
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van der Weijde, D.H. (author), van Westing, E.P.M. (author), Ferrari, G.M. (author), de Wit, J.H.W. (author), TNO Industrie (author)In this paper the use of Electrochemical Impedance Spectroscopy is evaluated for three situations during the lifetime of organic barrier coating. These situations are: • Defect free coatings • Delaminated, but intact coatings • Coatings with defects combined with cathodic delamination It is shown that in the first case EIS is reduced to a...article 1998
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Fischer, H.R. (author), Stadler, H. (author), Erina, N. (author)The mechanical properties of bitumen, such as elasticity/Young's modulus, stickiness/adhesion, hardness and energy loss, and sample deformation were acquired quantitatively and simultaneously with the topology at the microscale, discriminating clearly two separate phases within the bitumen. Temperature-dependent measurements revealed detailed...article 2013
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The Netherlands have only limited resources of dimension stone within the own borders, viz. local bog iron ore in the middle and east of the country, erratics from the Saalian ice age used in a few churches in the north, and Carboniferous sandstone and Cretaceous limestones in the south of Limburg (NIJLAND et al. 2006); of these, the Maastricht...article 2015
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Veldman, D. (author), Ipek, Ö. (author), Meskers, S.C.J. (author), Sweelssen, J. (author), Koetse, M.M. (author), Veenstra, S.C. (author), Kroon, J.M. (author), van Bavel, S.S. (author), Loos, J. (author), Janssen, R.A.J. (author), TNO Industrie en Techniek (author)The electro-optical properties of thin films of electron donor-acceptor blends of a fluorene copolymer (PF10TBT) and a fullerene derivative (PCBM) were studied. Transmission electron microscopy shows that in these films nanocrystalline PCBM clusters are formed at high PCBM content. For all concentrations, a charge transfer (CT) transition is...article 2008
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Grant-Jacob, J.A. (author), Mills, B. (author), Feinaeugle, M. (author), Sones, C.L. (author), Oosterhuis, G. (author), Hoppenbrouwers, M.B. (author), Eason, R.W. (author)We demonstrate the use of laser-induced forward transfer (LIFT) in combination with a novel donor replenishment scheme to print continuous copper wires. Wires of mm length, a few microns wide and submicron in height have been printed using a 800 nm, 1 kHz repetition rate, 150 fs pulsed laser. A 120 nm thick copper donor was used along with laser...article 2013
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Yang, Z. (author), Fischer, H. (author), Polder, R.B. (author)In this paper, two types of modified hydrotalcites (MHT) were incorporated into cement mortars with two dosage levels (replacing 5% and 10% cement by mass). Designated testing programme including strength test, porosity test, and rapid chloride migration and diffusion test were employed to investigate the effect of modified hydrotalcites on...article 2015
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- Adan, O.C.G. (author), TNO Bouw en Ondergrond (author) article 2008
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Ojeda, O.D. (author), Maljaars, J. (author), Abspoel, R. (author)Thermal gradients often occur in fire exposed structures. This paper considers thermal gradients over the cross-section of steel columns. By means of finite element simulations, the paper demonstrates that these gradients reduce the fiexural buckling resistance of the columns. This is due to the eccentricity in the column created by the...article 2016
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van Soest-Vercammen, E.L.J. (author), Peters, T.A. (author), Fontalvo, J. (author), Vorstman, M.A.G. (author), Benes, N.E. (author), van Dam, R.A. (author), Vroon, Z.A.E.P. (author), Keurentjes, J.T.F. (author), TNO Industrie en Techniek TNO Milieu, Energie en Procesinnovatie (author)Thin microporous silica membranes were prepared on the outer surface of hollow fibre ceramic substrates. In principle this enables relatively fast and inexpensive production of large membrane surface area, combined with a low support resistance and a high membrane surface area/module volume ratio (>1000 m2 m-3) compared to tubular membranes....article 2005
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Nijland, T.G. (author), van Hees, R.P.J. (author)Rhenish tuffs from the volcanic Eifel region, Germany, are amongst the most prominent and voluminous natural stones in Dutch monuments. In particular, tuffs from the 11,900 bp Laacher See eruption have been used since Roman times, - hence the name Römer tuff-, and were widely used again in romanesque (and to lesser extent romanogothic and early...article 2007
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Fischer, H.R. (author), Dillingh, E.C. (author), Hermse, C.G.M. (author)The interfacial interaction between bituminous binders and several mineral surfaces of different chemical nature as present in asphalt mixtures has been investigated using atomic force microscopy. Several dry mineral surfaces display comparable wetting with respect to the different phases present in the micro-structure of bitumen, regardless of...article 2013