Searched for: collection%3Air
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Wapenaar, C.P.A. (author), Brackenhoff, J.A. (author), Thorbecke, J.W. (author), van der Neut, J.R. (author), Slob, E.C. (author), Verschuur, D.J. (author)

A virtual acoustic source inside a medium can be created by emitting a time-reversed point-source response from the enclosing boundary into the medium. However, in many practical situations the medium can be accessed from one side only. In those cases the time-reversal approach is not exact. Here, we demonstrate the experimental design and...

journal article 2018
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Li, Mengmeng (author), Mangalore, Deepthi Kamath (author), Zhao, Jingbo (author), Carpenter, Joshua H. (author), Yan, Hongping (author), Ade, Harald (author), Müllen, Klaus (author), Blom, Paul W.M. (author), Pisula, Wojciech (author), de Leeuw, D.M. (author), Asadi, Kamal (author), Yan, He (author)

It is still a great challenge to fabricate conjugated polymer monolayer field-effect transistors (PoM-FETs) due to intricate crystallization and film formation of conjugated polymers. Here we demonstrate PoM-FETs based on a single monolayer of a conjugated polymer. The resulting PoM-FETs are highly reproducible and exhibit charge carrier...

journal article 2018
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Furrer, Fabian (author), Gehring, Tobias (author), Schaffner, Christian (author), Pacher, Christoph (author), Schnabel, Roman (author), Wehner, S.D.C. (author)

Cryptographic protocols are the backbone of our information society. This includes two-party protocols which offer protection against distrustful players. Such protocols can be built from a basic primitive called oblivious transfer. We present and experimentally demonstrate here a quantum protocol for oblivious transfer for optical continuous...

journal article 2018
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Rocha, Paulo R.F. (author), Silva, Alexandra D. (author), Godinho, Lia (author), Dane, Willem (author), Estrela, Pedro (author), Vandamme, Lode K.J. (author), Pereira-Leal, Jose B. (author), de Leeuw, D.M. (author), Leite, Ricardo B. (author)

Diatoms are photosynthetic microalgae, a group with a major environmental role on the planet due to the biogeochemical cycling of silica and global fixation of carbon. However, they can evolve into harmful blooms through a resourceful communication mechanism, not yet fully understood. Here, we demonstrate that a population of diatoms under...

journal article 2018
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Pfister, C. (author), Rol, M.A. (author), Mantri, Atul (author), Tomamichel, Marco (author), Wehner, S.D.C. (author)

The central figure of merit for quantum memories and quantum communication devices is their capacity to store and transmit quantum information. Here, we present a protocol that estimates a lower bound on a channel's quantum capacity, even when there are arbitrarily correlated errors. One application of these protocols is to test the...

journal article 2018
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Bloemendal, J.M. (author), Olsthoorn, T.N. (author)

Aquifer thermal energy storage (ATES) is a technology with worldwide potential to provide sustainable space heating and cooling using groundwater stored at different temperatures. In areas with high ambient groundwater flow velocity (>25 m/y) thermal energy losses by displacement of groundwater may be prevented by application of multiple...

journal article 2018
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Wang, W. (author), Rans, C.D. (author), Benedictus, R. (author)

Mechanically fastened joints are susceptible to the presence of multiple-site damage (MSD) cracks in the critical fastener row. Different from the MSD growth in joints consisting of metallic substrates, the two coupled metal crack growth and interfacial delamination propagation failure mechanisms in Fibre Metal Laminates (FMLs) make the...

journal article 2018
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Turteltaub, S.R. (author), van Hoorn, Niels (author), Westbroek, Wim (author), Hirsch, C.W. (author)

A multiscale framework for the analysis of fracture is developed in order to determine the effective (homogenized) strength and fracture energy of a composite material based on the constituent's material properties and microstructural arrangement. The method is able to deal with general (mixed-mode) applied strains without a priori knowledge...

journal article 2018
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Wolbertus, R. (author), Kroesen, M. (author), van den Hoed, Robert (author), Chorus, C.G. (author)

Policy makers are looking for effective ways to promote the adoption of electric vehicles (EVs). Among the options is the roll-out and management of charging infrastructure to meet the EV drivers’ refuelling needs. However, policies in this area do not only have a long-term effect on the adoption of EVs among prospective owners, they also...

journal article 2018
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Gong, J. (author), Rossen, W.R. (author)

If the aperture distribution is broad enough in a naturally fractured reservoir, even one where the fracture network is highly inter-connected, most fractures can be eliminated without significantly affecting the flow through the fracture network. During a waterflood or enhanced-oil-recovery (EOR) process, the production of oil depends on the...

journal article 2018
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Khait, M. (author), Voskov, D.V. (author)

Numerical simulation is one of the most important tools required for financial and operational management of geothermal reservoirs. The modern geothermal industry is challenged to run large ensembles of numerical models for uncertainty analysis, causing simulation performance to become a critical issue. Geothermal reservoir modeling requires...

journal article 2018
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Sodja, J. (author), De Breuker, R. (author), Nozak, Dejan (author), Drazumeric, Radovan (author), Marzocca, Pier (author)

Low-fidelity fluid–structure interaction model of flexible propeller blades is assessed by means of comparison with high-fidelity aeroelastic results. The low-fidelity model is based on a coupled extended blade-element momentum model and non-linear beam theory which were both implemented in Matlab. High-fidelity fluid–structure interaction...

journal article 2018
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Zou, D. (author), Bisagni, C. (author)

An experimental and numerical investigation was conducted to study the skin-stiffener separation of single T-shape stiffener specimens in postbuckling condition. Three specimens were manufactured with a centrally located Teflon insert, and were loaded in compression until collapse. Deformation patterns and separation evolution were monitored...

journal article 2018
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Eker, S. (author), Kwakkel, J.H. (author)

Many-Objective Robust Decision Making (MORDM) is a prominent model-based approach for dealing with deep uncertainty. MORDM has four phases: a systems analytical problem formulation, a search phase to generate candidate solutions, a trade-off analysis where different strategies are compared across many objectives, and a scenario discovery...

journal article 2018
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Seidel, Marc (author), Hendrikse, H. (author)

In this paper, an analytical method is presented to assess FLI (Frequency lock-in) of monopile support structures for offshore wind turbines, subjected to loading by floating sea ice. The method is introduced, justified and presented with an example. The main idea of the method is to use existing knowledge regarding structural response...

journal article 2018
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Haidari, A.H. (author), Heijman, S.G.J. (author), van der Meer, W.G.J. (author)

Making improvements to feed spacers of spiral-wound membrane (SWM) modules of reverse osmosis (RO) is a necessary step towards a wider application of these modules. This study sets out to evaluate the performance of six commercial feed spacers by comparing their actual velocity profiles and their pressure drop. Velocity profiles are obtained...

journal article 2018
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Kotb, O. (author)
Due to the increasing share of renewable energy sources in modern power systems and electricity market deregulation, heavy inter-regional and cross-border power flows are becoming a commonplace in system operation. Moreover, largescale integration of renewable energy sources is expected to pace up, therefore new solutions have to be developed to...
doctoral thesis 2018
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Giepman, R.H.M. (author), Schrijer, F.F.J. (author), van Oudheusden, B.W. (author)

High-resolution particle image velocimetry measurements were performed on laminar and transitional oblique shock wave reflections for a range of Mach numbers (M D 1:6-2:3), Reynolds numbers (Rexsh D 1.4×106-3.5×106) and flow deflection angles (θ 1°-5° or p3=p1 D 1.11-1.64). The laminar interactions revealed a...

journal article 2018
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Tol, H.J. (author)
Dynamical systems theory can significantly contribute to the understanding and control of fluid flows. Fluid dynamical systems are governed by the Navier-Stokes equations, which are continuous in both time and space, resulting in a state space of infinite dimension. To incorporate tools from systems theory it has become common practise to...
doctoral thesis 2018
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Tene, M. (author), Stuparu, Dana E. (author), Kurowicka, D. (author), El Serafy, G.Y.H. (author)

This paper describes a novel sensitivity analysis method, able to handle dependency relationships between model parameters. The starting point is the popular Morris (1991) algorithm, which was initially devised under the assumption of parameter independence. This important limitation is tackled by allowing the user to incorporate dependency...

journal article 2018
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