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Sambell, K.A.M. (author), Smets, P.S.M. (author), Simons, D.G. (author), Snellen, M. (author), Evers, L.G. (author)Continuous long-term sound sources are recorded at hydroacoustic station H03S, a threeelement hydrophone array south of Robinson Crusoe Island between 2014 April 23 and 2017 August 20. The origin of the signal between 3 and 20 Hz is investigated by using cross-correlation, array processing using plane wave beamforming and spectral analysis....journal article 2019
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Ruf, M.T. (author), IJspeert, M. (author), van Dam, S.B. (author), de Jong, N. (author), van den Berg, J.H. (author), Evers, G.P.H. (author), Hanson, R. (author)Diamond membrane devices containing optically coherent nitrogen-vacancy (NV) centers are key to enable novel cryogenic experiments such as optical ground-state cooling of hybrid spin-mechanical systems and efficient entanglement distribution in quantum networks. Here, we report on the fabrication of a (3.4 ± 0.2) μm thin, smooth (surface...journal article 2019
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Smink, M.M.E. (author), Assink, Jelle D. (author), Bosveld, Fred C. (author), Smets, P.S.M. (author), Evers, L.G. (author)The Royal Netherlands Meteorological Institute (KNMI) operates a three-dimensional microbarometer array at the Cabauw Experimental Site for Atmospheric Research observatory. The array consists of five microbarometers on a meteorological tower up to an altitude of 200 m. Ten ground-based microbarometers surround the tower with an array aperture...journal article 2019
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Blixt, Erik Mårten (author), Näsholm, Sven Peter (author), Gibbons, Steven J. (author), Evers, L.G. (author), Charlton-Perez, Andrew J. (author), Orsolini, Yvan J. (author), Kværna, Tormod (author)The receiver-to-source backazimuth of atmospheric infrasound signals is biased when cross-winds are present along the propagation path. Infrasound from 598 surface explosions from over 30 years in northern Finland is measured with high spatial resolution on an array 178 km almost due North. The array is situated in the classical shadow-zone...journal article 2019
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Korbee, D. (author), Weger, Jacob (author), Hermans, L.M. (author), Evers, Jaap (author), Wyatt, Andrew (author)Sustainable livelihood development is an ongoing challenge worldwide, and has regained importance due to threats of water shortages and climate change. To cope with changing climatic, demographic and market conditions in Vietnam’s Mekong Delta (VMD) an agricultural transformation process has been suggested in the recent Mekong Delta Plan. This...journal article 2019
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Grimaldi, G. (author), Crisp, R.W. (author), Ten Brinck, Stephanie (author), Zapata, Felipe (author), van Ouwendorp, M. (author), Renaud, N. (author), Kirkwood, N.R.M. (author), Evers, W.H. (author), Kinge, S.S. (author), Infante, Ivan (author), Siebbeles, L.D.A. (author), Houtepen, A.J. (author)Thermalization losses limit the photon-to-power conversion of solar cells at the high-energy side of the solar spectrum, as electrons quickly lose their energy relaxing to the band edge. Hot-electron transfer could reduce these losses. Here, we demonstrate fast and efficient hot-electron transfer between lead selenide and cadmium selenide...journal article 2018
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Crisp, R.W. (author), Grimaldi, G. (author), De Trizio, Luca (author), Evers, W.H. (author), Kirkwood, N.R.M. (author), Kinge, Sachin (author), Manna, L. (author), Siebbeles, L.D.A. (author), Houtepen, A.J. (author)Indium antimonide (InSb) quantum dots (QDs) have unique and interesting photophysical properties, but widespread experimentation with InSb QDs is lacking due to the difficulty in synthesizing this material. The key experimental challenge in fabricating InSb QDs is preparing a suitable Sb-precursor in the correct oxidation state that reacts...journal article 2018
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Evers, L.G. (author), Assink, J. D. (author), Smets, P.S.M. (author)Supersonic rockets generate low-frequency acoustic waves, that is, infrasound, during the launch and re-entry. Infrasound is routinely observed at infrasound arrays from the International Monitoring System, in place for the verification of the Comprehensive Nuclear-Test-Ban Treaty. Association and source identification are key elements of the...journal article 2018
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Averbuch, G. (author), Assink, Jelle D. (author), Smets, P.S.M. (author), Evers, L.G. (author)Low-frequency acoustic, i.e., infrasound, waves are measured by sparse arrays of microbarometers. Recorded data are processed by automatic detection algorithms based on array-processing techniques such as time-domain beam forming and f-k analysis. These algorithms use a signal-to-noise ratio (S/N) value as a detection criterion. In the case...journal article 2018
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Shani-Kadmiel, Shahar (author), Assink, Jelle D. (author), Smets, P.S.M. (author), Evers, L.G. (author)In this study we analyze infrasound signals from three earthquakes in central Italy. The M<sub>w</sub> 6.0 Amatrice, M<sub>w</sub> 5.9 Visso, and M<sub>w</sub> 6.5 Norcia earthquakes generated significant epicentral ground motions that couple to the atmosphere and produce infrasonic waves. Epicentral seismic and infrasonic signals are...journal article 2018
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Spoor, F.C.M. (author), Grimaldi, G. (author), Delerue, Christophe (author), Evers, W.H. (author), Crisp, R.W. (author), Geiregat, P.A. (author), Hens, Zeger (author), Houtepen, A.J. (author), Siebbeles, L.D.A. (author)Carrier multiplication is a process in which one absorbed photon excites two or more electrons. This is of great promise to increase the efficiency of photovoltaic devices. Until now, the factors that determine the onset energy of carrier multiplication have not been convincingly explained. We show experimentally that the onset of carrier...journal article 2018
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Blanc, E (author), Ceranna, L. (author), Hauchecorne, A (author), Charlton-Perez, A (author), Marchetti, E. (author), Evers, L.G. (author), Kvaerna, T (author), Lastovicka, J. (author), Eliasson, L. (author), Crosby, N. B. (author), Blanc-Benon, P. (author), le Pichon, A (author), Brachet, N (author), Pilger, C (author), Keckhut, P (author), Assink, J. D. (author), Smets, P.S.M. (author), Lee, C. F. (author), Kero, J. (author), Sindelarova, T. (author), Kämpfer, N. (author), Rüfenacht, R. (author), Farges, T. (author), Millet, C. (author), Näsholm, S. P. (author), Gibbons, S. J. (author), Espy, P. J. (author), Hibbins, R. E. (author), Heinrich, P (author), Ripepe, M (author), Khaykin, S. (author), Mze, N. (author), Chum, J. (author)This paper reviews recent progress toward understanding the dynamics of the middle atmosphere in the framework of the Atmospheric Dynamics Research InfraStructure in Europe (ARISE) initiative. The middle atmosphere, integrating the stratosphere and mesosphere, is a crucial region which influences tropospheric weather and climate. Enhancing...journal article 2018
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Kulkarni, A. (author), Evers, W.H. (author), Tomić, Stanko (author), Beard, Matthew C. (author), Vanmaekelbergh, Daniel (author), Siebbeles, L.D.A. (author)Carrier multiplication (CM) is a process in which a single photon excites two or more electrons. CM is of interest to enhance the efficiency of a solar cell. Until now, CM in thin films and solar cells of semiconductor nanocrystals (NCs) has been found at photon energies well above the minimum required energy of twice the band gap. The high...journal article 2018
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Gudjónsdóttir, S. (author), van der Stam, W. (author), Kirkwood, Nicholas (author), Evers, W.H. (author), Houtepen, A.J. (author)Control over the charge density is very important for implementation of colloidal semiconductor nanocrystals into various optoelectronic applications. A promising approach to dope nanocrystal assemblies is charge injection by electrochemistry, in which the charge compensating electrolyte ions can be regarded as external dopant ions. To gain...journal article 2018
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van der Stam, W. (author), de Graaf, M. (author), Gudjónsdóttir, S. (author), Geuchies, J.J. (author), Dijkema, J.J. (author), Kirkwood, N.R.M. (author), Evers, W.H. (author), Longo, Alessandro (author), Houtepen, A.J. (author)The processes that govern radiative recombination in ternary CuInS<sub>2</sub> (CIS) nanocrystals (NCs) have been heavily debated, but recently, several research groups have come to the same conclusion that a photoexcited electron recombines with a localized hole on a Cu-related trap state. Furthermore, it has been observed that single CIS...journal article 2018
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Schakel, Lemmy (author), Veldhuijzen, Dieuwke S. (author), van Middendorp, Henriet (author), van Dessel, Pieter (author), De Houwer, Jan (author), Bidarra, Rafael (author), Evers, Andrea W.M. (author)There is initial support for the effectiveness of approach-avoidance trainings in altering food-related health behaviors. Furthermore, outcome expectancies induced by verbal suggestions might optimize the effectiveness of these interventions, as shown in placebo research. The present study investigated the effectiveness of a gamified approach...journal article 2018
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Dugay, J. (author), Evers, W.H. (author), Torres-Cavanillas, Ramón (author), Giménez-Marqués, Mónica (author), Coronado, Eugenio (author), van der Zant, H.S.J. (author)We use the electrodeless time-resolved microwave conductivity (TRMC) technique to characterize spin-crossover (SCO) nanoparticles. We show that TRMC is a simple and accurate means for simultaneously assessing the magnetic state of SCO compounds and charge transport information on the nanometer length scale. In the low-spin state from liquid...journal article 2018
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van der Stam, W. (author), Gudjónsdóttir, S. (author), Evers, W.H. (author), Houtepen, A.J. (author)Control over the doping density in copper sulfide nanocrystals is of great importance and determines its use in optoelectronic applications such as NIR optical switches and photovoltaic devices. Here, we demonstrate that we can reversibly control the hole carrier density (varying from >10<sup>22</sup> cm<sup>-3</sup> to intrinsic) in...journal article 2017
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Alimoradi Jazi, M. (author), Janssen, V.A.E.C. (author), Evers, W.H. (author), Tadjine, A. (author), Delerue, C (author), Siebbeles, L.D.A. (author), van der Zant, H.S.J. (author), Houtepen, A.J. (author), Vanmaekelbergh, D (author)Self-assembled nanocrystal solids show promise as a versatile platform for novel optoelectronic materials. Superlattices composed of a single layer of lead-chalcogenide and cadmium-chalcogenide nanocrystals with epitaxial connections between the nanocrystals, present outstanding questions to the community regarding their predicted band...journal article 2017
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Evers, L.G. (author), Wapenaar, C.P.A. (author), Heaney, KD (author), Snellen, M. (author)The propagation of acoustic waves in the ocean strongly depends on the temperature. Lowfrequency acoustic waves can penetrate the ocean down to depths where few in situ measurements are available. It is therefore attractive to obtain a measure of the deep ocean temperature from acoustic waves. The latter is especially true if the ambient...journal article 2017