Searched for: subject:"Light"
(1 - 20 of 327)

Pages

document
Cani, D. (author), van der Waal, J.C. (author), Pescarmona, P.P. (author)
A series of photocatalysts consisting of C- and N-doped titanium dioxide (TiO2) nanoparticles highly dispersed and firmly embedded at the surface of a silica matrix were prepared using a novel synthesis method in which activated carbon has a double role: it acts as support for depositing the TiO2 nanoparticles and as hard template for generating...
article 2021
document
Westbeek, S. (author), Remmers, J.J.C. (author), van Dommelen, J.A.W. (author), Maalderink, H.H. (author), Geers, M.G.D. (author)
In photopolymerization-based additive manufacturing a complex interplay exists between the vat photopolymerization process characteristics and the (photo-active) resin’s material properties, which governs the trajectory from the input target geometry to the resulting true geometry of a printed component. Particularly for fine featured geometries...
article 2021
document
de Braaf, B. (author), Rops, C.M. (author), Storm, C. (author)
In atomic layer deposition (ALD), thin layers of materials are deposited on a substrate with atomic layer precision in the vertical direction. The ability to control layer growth in the lateral direction as well is expected to greatly increase the potential of ALD as a path to the bottom-up additive fabrication of electronic devices like solar...
article 2021
document
Schötz, K. (author), Greve, C. (author), Langen, A. (author), Gorter, H. (author), Dogan, I. (author), Galagan, Y. (author), van Breemen, A.J.J.M. (author), Gelinck, G.H. (author), Herzig, E.M. (author), Panzer, F. (author)
To develop a detailed understanding about halide perovskite processing from solution, the crystallization processes are investigated during spin coating and slot-die coating of MAPbI3 at different evaporation rates by simultaneous in situ photoluminescence, light scattering, and absorption measurements. Based on the time evolution of the optical...
article 2021
document
Rezaei, N. (author), Procel, P. (author), Simor, M. (author), Vroon, Z. (author), Zeman, M. (author), Isabella, O. (author)
An interdigitated back-contacted (IBC) configuration is proposed for submicron copper indium gallium (di)selenide (CIGS). In a modelling platform, the structure was opto-electrically optimized for maximum efficiency. The results are compared with a reference front/back-contacted (FBC) solar cell with similar absorber thickness and exhibiting 11...
article 2020
document
report 2020
document
Straathof, M.H. (author), van Driel, C.A. (author), van Lingen, J.N.J. (author), Ingenhut, B.L.J. (author), ten Cate, A.T. (author), Maalderink, H.H. (author)
A photocurable energetic resin was developed for photopolymerization additive manufacturing. The composition contains 50 wt % RDX, 25 wt % acrylate binder, and 25 wt % energetic plasticizer. The material was characterized in terms of compatibility, printability, mechanical properties and (ballistic) performance. The possibility of printing...
article 2020
document
Prakasam, V. (author), Tordera, D. (author), di Giacomo, F. (author), Abbel, R. (author), Langen, A. (author), Gelinck, G. (author), Bolink, H.J. (author)
Halide perovskites have been gaining considerable attention recently for use in light-emitting applications, due to their bandgap tunability, color purity and low cost fabrication methods. However, current fabrication techniques limit the processing to small-area devices. Here, we show that a facile N 2 gas-quenching technique can be used to...
article 2019
document
Martynow, M. (author), Glowienka, D. (author), Szmytkowski, J. (author), Galagan, Y. (author), Guthmuller, J. (author)
An experimental and theoretical investigation is reported to analyze the relation between the structural and absorption properties of CH3NH3PbI3 in the tetragonal phase. More than 3000 geometry optimizations were performed to reveal the structural disorder and identify structures with the lowest energies. The electronic structure calculations...
article 2019
document
Verriet, J. (author), Buit, L. (author), Doornbos, R. (author), Huijbrechts, B. (author), Sevo, K. (author), Sleuters, J. (author), Verberkt, M. (author)
IoT applications and other distributed control applications are characterized by the interaction of many hardware and software components. The inherent complexity of the distributed functionality introduces challenges on the detection and correction of issues related to functionality or performance, which are only possible to do after system...
conference paper 2019
document
Kuhnt, T. (author), García, R. Marroquín (author), Camarero-Espinosa, S. (author), Dias, A. (author), ten Cate, A.T. (author), van Blitterswijk, C.A. (author), Moroni, L. (author), Baker, M.B. (author)
To exploit the usability of Digital Light Processing (DLP) in regenerative medicine, biodegradable, mechanically customizable and well-defined polyester urethane acrylate resins were synthesized based on poly(caprolactone-co-trimethlenecarbonate). By controlling the monomer ratio, the resultant fabricated constructs showed tunable mechanical...
article 2019
document
Rezaei, N. (author), Isabella, O. (author), Vroon, Z.A.E.P. (author), Zeman, M. (author)
The optical losses associated with sub-micron absorbers in CIGS solar cells can be reduced by light management techniques. 3-D optical modelling was used to optimize light in-coupling and internal rear reflectance in a 750-nm thick CIGS reference solar cell. At the front side, an effective medium approximation (EMA) approach for describing...
article 2019
document
Ligterink, N.E. (author), Kadijk, G. (author), Elstgeest, M. (author), van Mensch, P. (author)
With a lifetime of 15 years and more, many vehicles on the European roads no longer have to satisfy durability and in-service conformity requirements. If new cars satisfy stringent on-road emission standard, the risk of significant increase in emissions due to aging, malfunctions, poor maintenance and tampering will be substantial. Even a few...
conference paper 2019
document
López-Fraguas, E. (author), Arredondo, B. (author), Vega-Colado, C. (author), Pozo, G.D. (author), Najafi, M. (author), Martín-Martín, D. (author), Galagan, Y. (author), Sánchez-Pena, J.M. (author), Vergaz, R. (author), Romero, B. (author)
The past few years have seen a great increase in the development of Visible Light Communication systems (VLC), mainly triggered by the wide variety of situations they can be used in. These communication systems have traditionally employed inorganic light emitters and photodetectors. In this work, we present a VLC system using an organic emitter...
article 2019
document
Li, S. (author), Pandharipande, A. (author), Masini, B. (author), Caicedo, D. (author)
We consider the problem of detecting commissioning changes in connected lighting systems. Commissioning changes can occur due to repositioning of luminaires/sensors or space renovation. This results in incorrect commissioning mapping of devices to areas, thereby impacting analysis and interpretation of data from such devices. We propose an...
article 2019
document
de Jong, R.J. (author), Heiligers, M.J.C. (author), de Wit, J.J.M. (author), Uysal, F. (author)
Camera systems are widely used for surveillance in the security and defense domains. The main advantages of camera systems are their high resolution, their ease of use, and the fact that optical imagery is easy to interpret for human operators. However, particularly when considering application in the defense domain, cameras have some...
conference paper 2019
document
van de Weijer, P. (author), Akkerman, H.B. (author)
In order to protect a flexible OLED on plastic foil against water from the ambient atmosphere a top and bottom thin-film encapsulation (TFE) is necessary. A TFE stack SiN-OCP-SiN with getter in OCP results in excellent shelf lifetime. However, the getter particles result in light scattering that is lost upon water ingress in the stack. As a...
article 2019
document
Price, L.L.A. (author), Udovičić, L. (author), Behrens, T. (author), van Drongelen, A. (author), Garde, A.H. (author), Hogenelst, K. (author), Jensen, M.A. (author), Khazova, M. (author), Nowak, K. (author), Rabstein, S. (author), Romanus, E. (author), Wolska, A. (author)
In May 2018, the Federal Institute for Occupational Safety and Health (BAuA, Germany) hosted ‘Light and Health at Work’, a workshop concerning occupational health issues relating to non-visual effects of light of both indoor and shift workers. The agenda reflected a common interest in translational research linking laboratory findings with...
article 2019
document
Rezaei, N. (author), Isabella, O. (author), Vroon, Z.A.E.P. (author), Zeman, M. (author)
The optical losses associated with sub-micron absorbers in CIGS solar cells can be reduced by light management techniques. 3-D optical modelling was used to optimize light in-coupling and internal rear reflectance in a 750-nm thick CIGS reference solar cell. At the front side, an effective medium approximation (EMA) approach for describing...
article 2019
document
van Rooijen, A.L. (author), Bouma, H. (author), Verbeek, F. (author)
Person re-identification (re-id) is the task of identifying a person of interest across disjoint camera views in a multi-camera system. This is a challenging problem due to the different poses, viewpoints and lighting conditions. Deeply learned systems have become prevalent in the person re-identification field as they are capable to deal with...
conference paper 2019
Searched for: subject:"Light"
(1 - 20 of 327)

Pages