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- Gielen, M.A. (author), Klapwijk, R.M. (author), Schut, A. (author), van Mechelen, M.P.P. (author) report 2020
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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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Westig, M.P. (author), Thierschmann, R. (author), Katan, A.J. (author), Finkel, M. (author), Klapwijk, T.M. (author)We study experimentally the transmission of an electromagnetic waveguide in the frequency range from 160 to 300 GHz. Photo-mixing is used to excite and detect the fundamental TE<sub>10</sub> mode in a rectangular waveguide with two orders-of-magnitude lower impedance. The large impedance mismatch leads to a strong frequency dependence of the...journal article 2020
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Thierschmann, R. (author), Çetinay Iyicil, H. (author), Finkel, M. (author), Katan, A.J. (author), Westig, M.P. (author), Van Mieghem, P.F.A. (author), Klapwijk, T.M. (author)We study the electrodynamic impedance of percolating conductors with a predefined network topology using a scanning microwave impedance microscope at gigahertz frequencies. For a given percolation number we observe strong spatial variations across a sample that correlate with the connected regions (clusters) in the network when the...journal article 2020
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Baselmans, J.J.A. (author), Bosma, S. (author), Ikarashi, S. (author), Klapwijk, T.M. (author), Llombart, Nuria (author), Pascual Laguna, A. (author), Thoen, David (author), de Visser, P.J. (author), Yurduseven, O. (author), Endo, A. (author)We are developing an ultra-wideband spectroscopic instrument, DESHIMA (DEep Spectroscopic HIgh-redshift MApper), based on the technologies of an on-chip filter bank and microwave kinetic inductance detector (MKID) to investigate dusty starburst galaxies in the distant universe at millimeter and submillimeter wavelengths. An on-site experiment of...journal article 2020
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Klapwijk, T.M. (author), de Visser, P.J. (author)We trace the historical fate of experiment and theory of microwave-stimulated superconductivity as originally reported for constriction-type superconducting weak links. It is shown that the observed effect disappeared by improving weak links to obtain the desired Josephson properties. Separate experiments were carried out to evaluate the...journal article 2020
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Semenov, A. V. (author), Devyatov, I. A. (author), Westig, M.P. (author), Klapwijk, T.M. (author)We address parametric amplifiers and kinetic inductance detectors, using concepts of the microscopic theory of superconductivity, and focusing on the interaction of microwave radiation with the superconducting condensate. This interaction was identified in recent experiments as the source of the apparent dissipation in microwave...journal article 2020
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Klapwijk, M.D. (author), Lloyd, T. (author), Vaz, G. (author), van Terwisga, T.J.C. (author)Different variable resolution turbulence modelling approaches (Hybrid, Bridging models and LES) are evaluated for turbulent channel flow at Re<sub>τ</sub>=395, for cases using either streamwise periodic boundary conditions or a synthetic turbulence generator. The effect of iterative, statistical and discretisation errors is investigated. For...journal article 2020
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Schut, A. (author), van Mechelen, M.P.P. (author), Klapwijk, R.M. (author), Gielen, M.A. (author), de Vries, M.J. (author)Design feedback is an essential pedagogical tool that can help young novice designers navigate divergent and convergent paths while designing. However, design feedback is often met with resistance, which counteracts its potential to help novice designers evaluate their design and generate new solution directions. In this paper, we report on...journal article 2020
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Klapwijk, M.D. (author), Lloyd, Thomas (author), Vaz, Guilherme (author), van Terwisga, T.J.C. (author)<br/>conference paper 2019
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Liebrand, Rens (author), Klapwijk, M.D. (author), Lloyd, Thomas (author), Vaz, Guilherme (author), Lopes, Rui (author)A sensitivity analysis of the transitional flow over a NACA66<sub>2</sub> - 415 foil and the elliptical Arndt wing is carried out. The SST turbulence model is complemented with the ? - Re <sup>~</sup><sub>?t</sub> transition model to determine the effect of varying turbulence intensity and eddy-viscosity ratio on the integral quantities and...conference paper 2019
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Klapwijk, M.D. (author), Lloyd, T. (author), Vaz, G. (author)Partially Averaged Navier–Stokes computations can employ three different approaches for specifying the ratio of modelled-to-total turbulence kinetic energy f<sub>k</sub>. Use can be made of either a constant, a spatially- or a spatially- and temporally-varying value. This work compares different estimates for f<sub>k</sub> found in literature...journal article 2019
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Finkel, M. (author), Thierschmann, R. (author), Katan, A.J. (author), Westig, M.P. (author), Spirito, M. (author), Klapwijk, T.M. (author)We have realized a microstrip based terahertz (THz) near field cantilever that enables quantitative measurements of the impedance of the probe tip at THz frequencies (0.3 THz). A key feature is the on-chip balanced hybrid coupler that serves as an interferometer for passive signal cancellation to increase the readout circuit sensitivity...journal article 2019
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Schut, A. (author), Klapwijk, R.M. (author), Gielen, M.A. (author), van Doorn, Fenne (author), de Vries, M.J. (author)In this paper, we explore the early indicators of design fixation occurring during the concept development stage of children’s design processes. This type of fixation, which we named: concept fixation, causes a blind adherence to the current (possibly unfavourable) state of a design idea. Its occurrence hampers the creative thinking processes...journal article 2019
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Endo, A. (author), Karatsu, K. (author), Pascual Laguna, A. (author), Mirzaei, B. (author), Thoen, David (author), van Marrewijk, N.T. (author), Bosma, S. (author), Yurduseven, O. (author), Llombart, Nuria (author), Klapwijk, T.M. (author), Baselmans, J.J.A. (author)Terahertz spectrometers with a wide instantaneous frequency coverage for passive remote sensing are enormously attractive for many terahertz applications, such as astronomy, atmospheric science, and security. Here we demonstrate a wide-band terahertz spectrometer based on a single superconducting chip. The chip consists of an antenna coupled...journal article 2019
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Endo, A. (author), Karatsu, K. (author), Bosma, S. (author), Ikarashi, S. (author), Klapwijk, T.M. (author), Llombart, Nuria (author), Pascual Laguna, A. (author), Thoen, David (author), de Visser, P.J. (author), Yurduseven, O. (author), Baselmans, J.J.A. (author)Ultra-wideband, three-dimensional (3D) imaging spectrometry in the millimeter–submillimeter (mm–submm) band is an essential tool for uncovering the dust-enshrouded portion of the cosmic history of star formation and galaxy evolution<sup>1–3</sup>. However, it is challenging to scale up conventional coherent heterodyne receivers<sup>4</sup> or...journal article 2019