Searched for: subject%3A%22Pixel%22
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van Heijst, S.E. (author)
Two-dimensional (2D) layered materials have attracted the interest of the scientific community following the discovery of graphene and its extraordinary properties. Of particular interest is a class of materials called transition metal dichalcogenides (TMDs). The materials within this class were discovered to show similarly...
doctoral thesis 2024
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Bolhuis, M. (author), van Heijst, S.E. (author), Sangers, J.J.M. (author), Conesa Boj, S. (author)
Achieving nanoscale strain fields mapping in intricate van der Waals (vdW) nanostructures, like twisted flakes and nanorods, presents several challenges due to their complex geometry, small size, and sensitivity limitations. Understanding these strain fields is pivotal as they significantly influence the optoelectronic properties of vdW...
journal article 2024
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Rivera-Arbeláez, José M. (author), Keekstra, Danjel (author), Cofiño-Fabres, Carla (author), Boonen, Tom (author), Dostanic, M. (author), ten Den, Simone A. (author), Vermeul, Kim (author), Mastrangeli, Massimo (author), van den Berg, A (author)
The high rate of drug withdrawal from the market due to cardiovascular toxicity or lack of efficacy, the economic burden, and extremely long time before a compound reaches the market, have increased the relevance of human in vitro models like human (patient-derived) pluripotent stem cell (hPSC)-derived engineered heart tissues (EHTs) for the...
journal article 2023
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Abarca, Accel (author), Theuwissen, A.J.P.A.M. (author)
This paper presents a novel technique for dark current compensation of a CMOS image sensor (CIS) by using in-pixel temperature sensors (IPTSs) over a temperature range from −40 °C to 90 °C. The IPTS makes use of the 4T pixel as a temperature sensor. Thus, the 4T pixel has a double functionality, either as a pixel or as a temperature sensor....
journal article 2023
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Alonso Del Pino, M. (author), Bosma, S. (author), Jung-Kubiak, C. (author), Bueno, J. (author), Chattopadhyay, G. (author), Llombart, Nuria (author)
In this paper, we present a quasi-optical power distribution architecture based on the use of an integrated lens antenna that generates a uniform aperture field distribution. By using such distribution in combination with an integrated lens array, an efficient and scalable quasi-optical power distribution can be achieved at THz frequencies....
conference paper 2023
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Mohammad Zaki, A.R. (author), Nihtianova, S. (author)
Small charge detection is used for a wide range of applications: advanced industrial process control, experimental physics and space instruments, and material testing and medical imaging. These applications give rise to the development of a wide variety of charge-sensitive readout integrated circuits (ROICs). The trend in the state-of-the-art...
conference paper 2023
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Romijn, J. (author), Sanseven, Seçil (author), Zhang, Kouchi (author), Vollebregt, S. (author), Sarro, Pasqualina M (author)
An angle sensitive optical sensor without conventional optics is presented in this article. The reported device omits the need for adding 3-D optics in postprocessing by monolithic integration of complimentary metal-oxide semiconductor compatible diffraction grating layers, which cuts down the fabrication costs and allows for miniaturization...
journal article 2022
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Abarca Prouza, A.N. (author)
This thesis describes the integration of temperature sensors into a CMOS image sensor (CIS). The temperature sensors provide the in-situ temperature of the pixels as well as the thermal distribution of the pixel array. The temperature and the thermal distribution are intended to be used to compensate for dark current affecting the CIS. Two...
doctoral thesis 2021
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Zangabad, Reza Pakdaman (author), Bosch, Johan G. (author), Mastik, Frits (author), Beurskens, Robert H.S.H. (author), Henneken, Vincent A. (author), Weekamp, Johannes W. (author), van der Steen, A.F.W. (author), van Soest, Gijs (author)
Intravascular ultrasound (IVUS) is a well-established diagnostic method that provides images of the vessel wall and atherosclerotic plaques. We investigate the potential for phased-array IVUS utilizing coded excitation (CE) for improving the penetration depth and image signal-to-noise ratio (SNR). It is realized on a new experimental...
journal article 2021
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Hagenaars, Erik (author), Pandharipande, Ashish (author), Murthy, Abhishek (author), Leus, G.J.T. (author)
People-counting data can be used in building-control systems to improve comfort and in space management applications to optimize building space. In this work, we consider a combi-sensor with a single-pixel thermopile and passive infrared sensor for people counting. We first develop a thermopile signal model for object temperature measurements...
journal article 2021
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Yang, M. (author)
Multi-epoch Synthetic Aperture Radar Interferometry (InSAR) is widely used to estimate displacements of selected scatterers from phase observations. However, their interpretation needs a connection to objects in the real world. <br/><br/>To associate InSAR scatterers to their corresponding geo-objects, it is necessary to (i) accurately estimate...
doctoral thesis 2020
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Abarca Prouza, A.N. (author), Theuwissen, A.J.P.A.M. (author)
This article presents in-pixel (of a CMOS image sensor (CIS) temperature sensors with improved accuracy in the spatial and the temporal domain. The goal of the temperature sensors is to be used to compensate for dark (current) fixed pattern noise (FPN) during the exposure of the CIS. The temperature sensors are based on substrate parasitic...
journal article 2020
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Yang, M. (author), Dheenathayalan, P. (author), Lopez Dekker, F.J. (author), van Leijen, F.J. (author), Liao, Mingsheng (author), Hanssen, R.F. (author)
Persistent Scatterer Interferometry (PSI) is a time series remote sensing technique to estimate displacements of geo-objects from the interferometric phases of selected Persistent Scatterers (PS). The relative position of a scatterer within a resolution cell causes an additional phase contribution in the observed phase, which needs to be...
journal article 2020
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Christodoulou, A. (author), van Oosterom, P.J.M. (author)
In this paper, a method is proposed for solving relative translations of 3D point clouds collected by Mobile Laser Scanning (MLS) techniques. The proposed approach uses the attributes of the 3D points to generate and match 2D-projections, by employing a simple correlation technique instead of matching in 3D. As a result, the developed method...
journal article 2018
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Ge, X. (author), Theuwissen, A.J.P.A.M. (author)
This paper presents a temporal noise analysis of charge-domain sampling readout circuits for Complementary Metal-Oxide Semiconductor (CMOS) image sensors. In order to address the trade-off between the low input-referred noise and high dynamic range, a Gm-cell-based pixel together with a charge-domain correlated-double sampling (CDS) technique...
journal article 2018
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Bueno, J. (author), Murugesan, V. (author), Karatsu, K. (author), Thoen, David (author), Baselmans, J.J.A. (author)
We present the development of a background-limited kilo-pixel imaging array of ultrawide bandwidth kinetic inductance detectors (KIDs) suitable for space-based THz astronomy applications. The array consists of 989 KIDs, in which the radiation is coupled to each KID via a leaky lens antenna, covering the frequency range between 1.4 and 2.8 THz...
journal article 2018
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Cartamil Bueno, S.J. (author)
doctoral thesis 2017
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Bangira, T. (author), Alfieri, S.M. (author), Menenti, M. (author), van Niekerk, Adriaan (author), Vekerdy, Zoltán (author)
The Caprivi basin in Namibia has been affected by severe flooding in recent years resulting in deaths, displacements and destruction of infrastructure. The negative consequences of these floods have emphasized the need for timely, accurate and objective information about the extent and location of affected areas. Due to the high temporal...
journal article 2017
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Nguyen, M.P. (author), Chun, Se Young (author)
A non-local means (NLM) filter is a weighted average of a large number of non-local pixels with various image intensity values. The NLM filters have been shown to have powerful denoising performance, excellent detail preservation by averaging many noisy pixels, and using appropriate values for the weights, respectively. The NLM weights...
journal article 2017
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Abarca Prouza, A.N. (author), Xie, S. (author), Markenhof, Jules (author), Theuwissen, A.J.P.A.M. (author)
In this work, a novel approach is presented for measuring relative temperature variations inside the pixel array of a CMOS image sensor itself. This approach can give important information when compensation for dark (current) fixed pattern noise (FPN) is needed. The test image sensor consists of pixels and temperature sensors pixels (=Tixels)....
conference paper 2017
Searched for: subject%3A%22Pixel%22
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