Searched for: subject:"radiation"
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Hennink, A. (author), Lathouwers, D. (author)

We present a new discretization of the mono-energetic Fokker–Planck equation. We build on previous work (Kópházi and Lathouwers, 2015) where we devised an angular discretization for the Boltzmann equation, allowing for both heterogeneous and anisotropic angular refinement. The angular discretization is based on a discontinuous finite element...

journal article 2018
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Kouwenberg, J.J.M. (author), Kremers, G. J. (author), Slotman, J. A. (author), Wolterbeek, H.T. (author), Houtsmuller, A.B. (author), Denkova, A.G. (author), Bos, A.J.J. (author)

Structured illumination microscopy (SIM) for the imaging of alpha particle tracks in fluorescent nuclear track detectors (FNTD) was evaluated and compared to confocal laser scanning microscopy (CLSM). FNTDs were irradiated with an external alpha source and imaged using both methodologies. SIM imaging resulted in improved resolution, without...

journal article 2018
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Ferrari, Lorenza (author), Yurduseven, O. (author), Llombart Juan, N. (author), Yates, Stephen J.C. (author), Bueno, J. (author), Murugesan, V. (author), Thoen, D.J. (author), Endo, A. (author), Baryshev, AM (author), Baselmans, J.J.A. (author)

Next generation sub-mm imaging instruments require kilo-pixel focal plane arrays filled with background limited detectors. Microwave kinetic inductance detectors (MKIDs) are a state-of-the-art detector for future instruments due to their inherent multiplexing capabilities. An MKID consists of a superconducting resonator coupled to a feed-line...

journal article 2018
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Wang, J. (author), Aubry, P.J. (author), Yarovyi, O. (author)

Ground penetrating radar imaging from the data acquired with arbitrarily oriented dipole-like antennas is considered. To take into account variations of antenna orientations resulting in spatial rotation of antenna radiation patterns and polarizations of transmitted fields, the full-wave method that accounts for the near-, intermediate-, and...

journal article 2018
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Garufo, A. (author), Carluccio, G. (author), Llombart Juan, N. (author), Neto, A. (author)

A novel equivalent circuit for pulsed photoconductive sources is introduced for describing the coupling between the photoconductive gap and the antenna. The proposed circuit effectively describes the mechanism of feeding the antenna by the semiconductor when this latter is illuminated by a laser operating in a pulsed mode. Starting from the...

journal article 2018
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Garufo, A. (author), Carluccio, G. (author), Freeman, Joshua R. (author), Bacon, David R. (author), Llombart Juan, N. (author), Linfield, EH (author), Davies, Alexander G. (author), Neto, A. (author)

This second part of two papers' sequence presents the experimental validation of the Norton equivalent circuit model for pulsed photoconductive antennas (PCAs) provided in the first paper of the sequence. To this goal, different prototypes of photoconductive antenna sources have been manufactured and assembled. The average powers radiated and...

journal article 2018
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Denkova, A.G. (author), de Kruijff, R.M. (author), Serra Crespo, P. (author)

Photothermal therapy (PTT) and photodynamic therapy (PDT) both utilize light to induce a therapeutic effect. These therapies are rapidly gaining importance due to the noninvasiveness of light and the limited adverse effect associated with these treatments. However, most preclinical studies show that complete elimination of tumors is rarely...

journal article 2017
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Southall, Ryan (author), Biljecki, F. (author)
Background: The VI-Suite is a free and open-source addon for the 3D content creation application Blender, developed primarily as a tool for the contextual and performative analysis of buildings. Its functionality has grown from simple, static lighting analysis to fully parametric lighting, shadowing, and building energy analyses. It adopts a...
journal article 2017
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Flohr, R.C.E. (author)
doctoral thesis 2017
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Yao, T. (author)
A radio-fluorogenic (RFG) gel is a polymer gel that can be applied as a 3D radiation dosimeter in radiotherapy. The gel becomes fluorescent in UV light after exposure to high-energy radiation and the intensity of the fluorescence is proportional to the local radiation dose. This radiation-induced fluorescence is permanent, which distinguishes it...
doctoral thesis 2017
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Xiao, Jing (author), Wei, Qi-Qin (author), Yang, Duo Guo (author), Zhang, Ping (author), He, Ning (author), Zhang, G.Q. (author), Chen, Xian Ping (author)

The slot waveguide has attracted considerable attention because of its ability to confine and guide electromagnetic energy at the subwavelength scale beyond the diffraction limit. We propose a novel terahertz slot waveguide structure to achieve a better tradeoff between propagation length and field confinement capacity, the novel waveguide...

journal article 2017
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Meesters, Stephan (author), Ossenblok, P.P.W. (author), Wagner, Louis (author), Schijns, Olaf (author), Boon, Paul (author), Florack, L.M.J. (author), Vilanova Bartroli, A. (author), Duits, Remco (author)

Background An accurate delineation of the optic radiation (OR) using diffusion MR tractography may reduce the risk of a visual field deficit after temporal lobe resection. However, tractography is prone to generate spurious streamlines, which deviate strongly from neighboring streamlines and hinder a reliable distance measurement between the...

journal article 2017
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Bueno Lopez, J. (author), Yurduseven, O. (author), Yates, Stephen J.C. (author), Llombart Juan, N. (author), Murugesan, V. (author), Thoen, D.J. (author), Baryshev, A.M. (author), Neto, A. (author), Baselmans, J.J.A. (author)

We present the design, fabrication, and full characterisation (sensitivity, beam pattern, and frequency response) of a background limited broadband antenna coupled kinetic inductance detector covering the frequency range from 1.4 to 2.8 THz. This device shows photon noise limited performance with a noise equivalent power of 2.5 × 10-19<...

journal article 2017
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Woudstra, L. (author), Krijnen, PAJ (author), Bogaards, SJP (author), Meinster, E (author), Emmens, RW (author), Kokhuis, TJA (author), Bollen, IAE (author), Baltzer, H (author), Baart, SMT (author), Parbhudayal, R (author), de Jong, N. (author), Helder, MN (author), Hinsbergh, V.W.M. (author), Musters, RJP (author), Kamp, O. (author), Niessen, H.W.M. (author), van Dijk, A. (author), Juffermans, LJ (author)
Successful stem cell therapy after acute myocardial infarction (AMI) is hindered by lack of engraftment of sufficient stem cells at the site of injury. We designed a novel technique to overcome this problem by assembling stem cell-microbubble complexes, named 'StemBells'. StemBells were assembled through binding of dual-targeted microbubbles (...
journal article 2016
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Slob, E.C. (author), Mulder, M. (author)
We have developed explicit expressions and the corresponding computer code for all homogeneous space Green’s functions for coupled electromagnetic fields and poroelastic waves. The Green’s functions are derived from the basic equations in closed form in the wavenumber- and space-frequency domains. They are given for point sources of any type....
journal article 2016
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Jouannic, B. (author), Noomen, R. (author), Van den IJssel, J.A.A. (author)
Since December 1990, a number of spacecraft have performed a flyby around Earth in which an unexpected change in velocity has been observed, which has not been explained so far: the so-called flyby anomaly. The effect on the excess velocity has been expressed in an empirical relation by Anderson, which was based on data on 6 such flybys. However...
conference paper 2015
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Roupioz, L. (author)
Monitoring the solar radiation budget on a daily basis is a prerequisite to study land surface processes, especially in climatology and hydrology, and in derived applications like drought early warning. Current space-born radiometers can provide daily observations to derive surface radiative fluxes at a spatial resolution of one square kilometer...
doctoral thesis 2015
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Duan, Z. (author)
There are millions of lakes and ten thousands of reservoirs in the world. The number of reservoirs is still increasing through the construction of large dams to meet the growing demand for water resources, hydroelectricity and economic development. Accurate information on the water balance components of lakes and reservoirs is deemed necessary...
doctoral thesis 2014
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Knist, C.L. (author)
Accurate ground-based remotely sensed microphysical and optical properties of liquid water clouds are essential references to validate satellite-observed cloud properties and to improve cloud parameterizations in weather and climate models. This requires the evaluation of algorithms for retrieval of cloud microphysical and optical properties...
doctoral thesis 2014
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Van Dalen, K.N. (author), Metrikine, A. (author), Tsouvalas, A. (author)
Transition radiation is emitted when a perturbation source (e.g., electric charge, mechanical load), which does not possess an inherent frequency, moves along a straight line at a constant velocity in or near an inhomogeneous medium. The phenomenon was described for the first time in electromagnetics, but it is universal from the physical point...
conference paper 2014
Searched for: subject:"radiation"
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