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Klapwijk, R.M. (author), Gielen, M.A. (author), Schut, A. (author), van Mechelen, M.P.P. (author)The Your Turn guidebook is a step-by-step instruction for teachers (in training) to create and implement their own design projects for upper primary and lower secondary education. It provides an overview of the variety of tools for Co-design projects with children, a step-by-step guidance, advice on the approach and striking examples. Performing...book 2021
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Klapwijk, R.M. (author), Gielen, M.A. (author), Schut, A. (author), van Mechelen, M.P.P. (author)Het lespakket ‘Gymmen in de Toekomst’ is onderdeel van de nieuwe serie ontwerplessen ‘Your Turn – aan de slag als echte ontwerpers’ voor de bovenbouw primair onderwijs en onderbouw voortgezet onderwijs. Gebaseerd op recent wetenschappelijk onderzoek, bevat de handleiding een rijkdom aan mogelijkheden voor ontwerpend leren. Met Your Turn<br/...book 2020
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Klapwijk, R.M. (author), Gielen, M.A. (author), Schut, A. (author), van Mechelen, M.P.P. (author)In ‘Your Turn voor de leerkracht’ staan voor stap- voor stap instructies waarmee leerkrachten (in opleiding) een ontwerpproject over een eigen thema kunnen opzetten en uitvoeren voor de bovenbouw primair onderwijs en onderbouw voortgezet onderwijs. Hiermee doen leerlingen<br/>ervaring op met ontwerpen rond aansprekende thema’s uit de eigen...book 2020
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Klapwijk, R.M. (author), Gielen, M.A. (author), Schut, A. (author), van Mechelen, M.P.P. (author)Het lespakket ‘Ontwerp een buitenles’ is onderdeel van de nieuwe serie ontwerplessen ‘Your Turn – aan de slag als echte ontwerpers’ voor de bovenbouw primair onderwijs en onderbouw voortgezet onderwijs. Gebaseerd op recent wetenschappelijk onderzoek, bevat de handleiding een rijkdom aan mogelijkheden voor ontwerpend leren. Met Your Turn heeft de...book 2020
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Klapwijk, R.M. (author), Gielen, M.A. (author), Schut, A. (author), van Mechelen, M.P.P. (author)Het lespakket ‘Zenna in het ziekenhuis’ is onderdeel van de nieuwe serie ontwerplessen ‘Your Turn – aan de slag als echte ontwerpers’ voor de bovenbouw primair onderwijs en onderbouw voortgezet onderwijs. Gebaseerd op recent wetenschappelijk onderzoek, bevat de handleiding een rijkdom aan mogelijkheden voor ontwerpend leren. Met Your Turn heeft...book 2020
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Klapwijk, R.M. (author), Gielen, M.A. (author), Schut, A. (author), van Mechelen, M.P.P. (author)Het lespakket ‘Presenteer je gymidee’ is onderdeel van de nieuwe serie ontwerplessen ‘Your Turn – aan de slag als echte ontwerpers’ voor de bovenbouw primair onderwijs en onderbouw voortgezet onderwijs. Gebaseerd op recent wetenschappelijk onderzoek, bevat de handleiding een rijkdom aan mogelijkheden voor ontwerpend leren. Met Your Turn heeft de...book 2020
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- Klapwijk, R.M. (author), Gielen, M.A. (author), Schut, A. (author), van Mechelen, M.P.P. (author) book 2018
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Hausleitner, B. (author), Muñoz Sanz, V. (author), Meyer, Han (author), Klapwijk, Anouk (author)The Cities of Making 'Cities Report', offers an insight into urban manufacturing in three global cities - Brussels, London and Rotterdam. Each city has had a distinctive industrial heritage and is interpreting the future of manufacturing in very different ways. This report exposes unique qualities of each and common trends that may be relevant...book chapter 2018
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Khosropanah, P. (author), Laauwen, W.M. (author), Gao, J.R. (author), Hajenius, M. (author), Hovenier, J.N. (author), Klapwijk, T.M. (author)We have characterized a heterodyne receiver based on an NbN hot electron bolometer integrated with spiral antenna as mixer and an optically pumped FIR ring laser at 4.3 THz as local oscillator (LO). We succeeded in measuring the receiver output power, responding to the hot/cold load, as a function of bias voltage at optimum LO power. From the...conference paper 2007
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Khosropanah, P. (author), Laauwen, W.M. (author), Hajenius, M. (author), Gao, J.R. (author), Klapwijk, T.M. (author)We have studied the sensitivity of a superconducting NbN hot electron bolometer mixer integrated with a spiral antenna at 4.3 THz. Using hot/cold blackbody loads and a beam splitter all in vacuum, we measured a double sideband receiver noise temperature of 1300 K at the optimum local oscillator (LO) power of 330 nW, which is about 12 times the...conference paper 2008
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- Van Doorn, F.A.P. (author), Klapwijk, R. (author) conference paper 2013
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Ren, Y. (author), Gao, J.R. (author), Hovenier, J.N.Higgins, R. (author), Zhang, W. (author), Bell, A. (author), Klein, B. (author), Klapwijk, T.M. (author)High-resolution heterodyne spectrometers operating at above 2 THz are crucial for detecting, e.g., the HD line at 2.7 THz and oxygen OI line at 4.7 THz in astronomy. The potential receiver technology is a combination of a hot electron bolometer (HEB) mixer and a THz quantum cascade laser (QCL) local oscillator (LO).Here we report the first...conference paper 2010
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Jaroszynski, J. (author), Popovic, D. (author), Klapwijk, T.M. (author)Studies of low-frequency resistance noise show that the glassy freezing of the two-dimensional electron system (2DES) in Si in the vicinity of the metal-insulator transition (MIT) persists in parallel magnetic fields B of up to 9 T. At low B, both the glass transition density ng and nc, the critical density for the MIT, increase with B such that...conference paper 2004
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Khudchenko, A. (author), Zijlstra, T. (author), Klapwijk, T. et al (author)The ALMA Band 9 receiver cartridge (600-720 GHz) based on Dual Sideband (DSB) superconductor-insulatorsuperconductor (SIS) mixer is currently in full production. In the case of spectral line observations, the integration time to reach a certain signal-to-noise level can be reduced by about a factor of two by rejecting an unused sideband. The...conference paper 2010
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Kasemann, C. (author), Güsten, R. (author), Heyminck, S. (author), Klein, B. (author), Klein, T. (author), Philipp, S.D. (author), Korn, A. (author), Schneider, G. (author), Henseler, A. (author), Baryshev, A. (author), Klapwijk, T.M. (author)CHAMP+, a dual-color 2 × 7 element heterodyne array for operation in the 450 ?m and 350 ?m atmospheric windows is under development. The instrument, which is currently undergoing final evaluation in the laboratories, will be deployed for commissioning at the APEX telescope in August this year. With its state-of-the-art SIS detectors and wide...conference paper 2006
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Smith, H. (author), Buckle, J. (author), Hills, R. (author), Bell, G. (author), Richer, J. (author), Curtis, E. (author), Withington, S. (author), Leech, J. (author), Williamson, R. (author), Klapwijk, T.M. (author)This paper describes the key design features and performance of HARP, an innovative heterodyne focal-plane array receiver designed and built to operate in the submillimetre on the James Clerk Maxwell Telescope (JCMT) in Hawaii. The 4x4 element array uses SIS detectors, and is the first sub-millimetre spectral imaging system on the JCMT. HARP...conference paper 2008
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Zhang, W. (author), Gao, J.R. (author), Khosropanah, P. (author), Bansal, T. (author), Klapwijk, T.M. (author), Miao, W. (author), Shi, S.C. (author)We report the sensitivity of a superconducting NbN hot electron bolometer mixer integrated with a tight spiral antenna at 5.3 THz. Using a measurement setup with black body calibration sources and a beam splitter in vacuo, and an antireflection coated Si lens, we obtained a double sideband receiver noise temperature of 1150 K, which is 4.5 times...conference paper 2010
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De Lange, G. (author), Jackson, B.D. (author), Jochemsen, M. (author), Laauwen, W.M. (author), De Jong, L. (author), Kroug, M. (author), Zijlstra, T. (author), Klapwijk, T.M. (author)We describe the performance of the Band 3 and Band 4 Flight Model mixer units for Herschel/HIFI Instrument. These units are part of the Focal Plane Unit of HIFI. The band 3 and 4 mixer units cover the 800-960 GHz and 960-1120 GHz frequency range and have a 4-8 GHz IF frequency band. The sensitivities of the mixers within the HIFI setting are...conference paper 2006
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Barends, R. (author), Van Vliet, S. (author), Baselmans, J.J.A. (author), Yates, S.J.C. (author), Gao, J.R. (author), Klapwijk, T.M. (author)We present measurements of the quasiparticle relaxation time in Ta superconducting films shaped as planar resonators using the response of the complex conductivity to photon flux. These films have been implanted with magnetic (Mn) as well as non-magnetic atoms (Al). We find a significant decrease of the relaxation time with increasing impurity...conference paper 2009
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Shcherbatenko, M. (author), Lobanov, Y. (author), Benderov, O. (author), Shurakov, A. (author), Ignatov, A. (author), Titova, N. (author), Finkel, M. (author), Maslennikov, S. (author), Kaurova, N. (author), Voronov, B.M. (author), Rodin, A. (author), Klapwijk, T.M. (author), Gol'tsman, G.N. (author)We report on design and characterization of a superconducting Hot Electron Bolometer Mixer integrated with a logarithmic spiral antenna for mid-IR range observations. The antenna parameters have been adjusted to achieve the ultimate performance at 10 ?m (30 THz) range where O3, NH3, CO2, CH4, N2O, . lines in the Earth’s atmosphere, in planetary...conference paper 2015