Searched for: subject:"Sensors"
(1 - 20 of 648)

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Kotti, S.E. (author), Heusdens, R. (author), Hendriks, R.C. (author)
The use of wireless acoustic sensor networks (WASNs) has received increased attention over the last decade. The advantages of WASNs over stand-alone multi-microphone devices are that the microphone array is not anymore limited by the dimensions of a single device, and that microphones can be placed at arbitrary locations. One of the...
conference paper 2021
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vn den Bloem, R. Brink, W. (author), Ananth, A. (author), Kanagasabapathi, T. (author), Amelink, A. (author), Bouwman, J. (author), Gelinck, G. (author), van Veen, S. (author), Boorsma, A. (author), Wopereis, S. (author)
Health maintenance and disease prevention strategies become increasingly prioritized with increasing health and economic burden of chronic, lifestyle-related diseases. A key element in these strategies is the empowerment of individuals to control their health. Self-measurement plays an essential role in achieving such empowerment. Digital...
article 2021
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le Feber, M. (author), Jadoenathmisier, T. (author), Goede, H. (author), Kuijpers, E. (author), Pronk, A. (author)
Will sensor-based exposure assessment be the future in workplace settings? Static instruments with embedded sensors are already applied to monitor levels of dangerous substances-in the context of acute health effects-at critical locations. However, with wearable, lightweight, miniaturized (low-cost) sensors developing quickly, much more is...
article 2021
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Goede, H. (author), Kuijpers, E. (author), Krone, T. (author), le Feber, M. (author), Franken, R. (author), Fransman, W. (author), Duyzer, J. (author), Pronk, A. (author)
This commentary explores the use of high-resolution data from new, miniature sensors to enrich models that predict exposures to chemical substances in the workplace. To optimally apply these sensors, one can expect an increased need for new models that will facilitate the interpretation and extrapolation of the acquired time-resolved data. We...
article 2021
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Venkatraman Jagatha, I. (author), Klausnitzer, N. (author), Chacon-Mateos, M. (author), Laquai, B. (author), Nieuwkoop, E. (author), van der Mark, P.J. (author), Vogt, U. (author), Schneider, C. (author)
article 2021
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Akkerman, H. (author), Peeters, B. (author), van Breemen, A. (author), Shanmugam, S. (author), Ugalde Lopez, L. (author), Tordera, D. (author), van de Ketterij, R. (author), Delvitto, E. (author), Malinowski, P. (author), Ke, T.-H. (author), De Roose, F. (author), Moreno Hagelsieb, L. (author), Katsouras, I. (author), Kronemeijer, A.J. (author), Meulenkamp, E. (author), Gelinck, G. (author)
In recent years there is an increasing interest to integrate optical sensing in mobile displays, for instance, for biometric fingerprint scanning functionality. There are several routes to incorporate optical fingerprint functionality within the full display area, each with their own benefits and challenges. Here we investigate the different...
conference paper 2021
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Ke, T.-H. (author), Epimitheas, E. (author), Molina Alvarez, G. (author), Vandenplas, E. (author), Moreno Hagelsieb, L. (author), Akkerman, H. (author), Shanmugam, S. (author), van Breemen, A. (author), Heremans, P. (author), Malinowski, P. (author)
We apply a photolithographic patterning process to integrate a green phosphorescent organic light emitting diode (OLED) with a polymer‐based organic photodetector (OPD) side‐by‐side with resolution up to 635 ppi. The characteristics of OLED and OPD before and after patterning are investigated. The crosstalk between OLED and OPD subpixels and the...
conference paper 2021
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Buvik, V. (author), Bernhardsen, I.M. (author), Figueiredo, R.V. (author), Vevelstad, S.J. (author), Goetheer, E.L.V. (author), van Os, P.J. (author), Knuutila, H.K. (author)
This work aims to understand oxygen solubility in pure and aqueous amine solvents for CO2 capture. Commercially available dissolved oxygen sensors were studied to evaluate whether these can be used for measuring oxygen solubility in the carbon capture processes. It also aims to understand the possible discrepansies from realistic concentrations...
article 2021
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Peternella, F.G. (author), Harmsma, P.J. (author), Horsten, R.C. (author), Zuidwijk, T. (author), Urbach, H.P. (author), Adam, A.J.L. (author)
A new method for fast, high resolution interrogation of an array of photonic sensors is proposed. The technique is based on the integrated Fourier transform (FT) interrogator previously introduced by the authors. Compared to other interferometric interrogators, the FT-interrogator is very compact and has an unprecedented tolerance to variations...
article 2021
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Kessels, I. (author), Koopman, B. (author), Verdonschot, N. (author), Marra, M. (author), Gijsbertse, K. (author)
The performance of military tasks is often exacerbated by additional load carriage, leading to increased physical demand. Previous studies showed that load carriage may lead to increased risk of developing musculoskeletal injuries, a reduction in task speed and mobility, and overall performance degradation. However, these studies were limited to...
article 2021
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Galeotti, F. (author), Lindgren, G. (author), Petruzzella, M. (author), van Otten, F.W.M. (author), Sadeghian Marnani, H. (author), Mohtashami, A. (author), van der Heijden, R. (author), Fiore, A. (author)
The low throughput of atomic force microscopy (AFM) is the main drawback in its large-scale deployment in industrial metrology. A promising solution would be based on the parallelization of the scanning probe system, allowing acquisition of the image by an array of probes operating simultaneously. A key step for reaching this goal relies on the...
article 2021
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de Vries, H. (author), Kamphuis, W. (author), Oldenhuis, H. (author), van der Schans, C. (author), Sanderman, R. (author)
Background: The emergence of smartphones and wearable sensor technologies enables easy and unobtrusive monitoring of physiological and psychological data related to an individual’s resilience. Heart rate variability (HRV) is a promising biomarker for resilience based on between-subject population studies, but observational studies that apply a...
article 2021
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Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D.M. (author), Sabbadini, A. (author), de Jong, N. (author), Pertijs, M.A.P. (author), Verweij, M.D. (author)
Current ultrasonic clamp-on flow meters consist of a pair of single-element transducers which are carefully positioned before use. This positioning process consists of manually finding the distance between the transducer elements, along the pipe axis, for which maximum SNR is achieved. This distance depends on the sound speed, thickness and...
article 2021
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Exposure sensors can be worn by employees on the chest or shoulder to measure their personal exposure levels. Sensors often record a measurement every few seconds, yielding an exposure profile (time series) for the entire working day. This can be presented to the employees themselves in real time, e.g. using an app. It can be visualized as an...
other 2020
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Deutz, D.B. (author), van der Zwaag, S. (author), Groen, P. (author)
As demand rises for flexible electronics, traditionally prepared sintered ceramic sensors must be transformed into fully new sensor materials that can bend and flex in use and integration. Negative temperature coefficient of resistance (NTC) ceramic thermistors are preferred temperature sensors for their high accuracy and excellent stability,...
article 2020
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Sensors can be used to monitor the effectiveness of control measures or working procedures. This applies both to sensors measuring chemical substances and to so-called ‘smart sensors’ that measure physical quantities such as temperature, distance, orientation, vibration, pressure, etc. They are not applied to people but to equipment and...
other 2020
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Exposure levels are currently measured by occasionally taking samples from a limited number of employees. A logbook is kept of the activities being carried out while these measurements are being made. The samples are analysed in a laboratory and, together with the log book data, interpreted and provided to the company. This approach does not,...
other 2020
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An exposure profile based on a personal exposure sensor is not easy to interpret. To understand what is causing peak or elevated exposures, insight is needed into what an employee has done, in what way, and under what circumstances, i.e. the context. This context can also be measured - in part - using sensors and other techniques, such as indoor...
other 2020
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Zalar, P. (author), Saalmink, M. (author), Raiteri, D. (author), van den Brand, J. (author), Smits, E.C.P. (author)
The electrical performance of screen‐printed dry electrodes on thermoplastic polyurethane substrates are evaluated according to their conformance to international standards, skin‐electrode impedance, and ability to gather high quality electrocardiograms. The electrical behavior of seven screen‐printed electrodes (Ag, Ag/PEDOT:PSS, Ag/AgCl, Ag...
article 2020
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Stationary exposure sensors and modelling tools can be used to draw up concentration maps of workspaces. This can be done for more than one chemical substance simultaneously. If employees are fitted with an ILT device, individual exposure profiles can be developed by combining an individual’s indoor location data with the concentration map data.
other 2020
Searched for: subject:"Sensors"
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