Projecten per jaar
Persoonlijk profiel
Expertise
- Active multi-parameters wave imaging in the mm-wave domain (30-300 GHz)
- Advanced sensor solutions in the mm-wave and sub-THz domain (10-750 GHz)
- Optoelectronic devices for mid-infrared applications
- Multi-model phsyiological sensing
- Semiconductor micro-and nanotechnologies
Vingerafdruk
Verdiep u in de onderzoeksgebieden waarop Johan Stiens actief is. Deze onderwerplabels komen uit het werk van deze persoon. Samen vormen ze een unieke vingerafdruk.
- 1 Soortgelijke profielen
Samenwerkingen en hoofdonderzoeksgebieden uit de afgelopen vijf jaar
Recente externe samenwerking op landen-/regioniveau. Duik in de details door op de stippen te klikken of
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VLIR430: Eerstelijnsgezondheidszorg Cuba: Multistakeholder-benadering
1/09/24 → 31/08/29
Project: Fundamenteel
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HERC67: Aanwenden van plasma etsprocessen voor het micro/nanotextureren van metalen oppervlakken voor de realisatie van innovatieve chemische, analytische, optische en medische toepassingen
De Malsche, W., Stiens, J., Hellemans, K., Vander Heyden, Y., Peeters, E., Hennecke, U., Ferranti, F., Maes, D. & Schelkens, P.
1/05/24 → 30/04/28
Project: Fundamenteel
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BASGO19: OZR Basisfinanciering voor Grote Onderzoeksgroepen - ETRO.RDI
1/01/24 → 31/12/24
Project: Fundamenteel
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IOFACC12: Tech4Health: Venturing in het domein van de gezondheidstechnologieën van de toekomst.
Stiens, J., Wambacq, P., da Silva Gomes, B. T., Sahli, H., Vandemeulebroucke, J., Jansen, B., Lemeire, J., Steenhaut, K., Munteanu, A., Deligiannis, N., Schelkens, P., Kuijk, M., Parvais, B., Chan, C. W., Van Schependom, J., Touhafi, A., Braeken, A., Runacres, M., Cornelis, B., Schretter, C., Blinder, D. & Temmermans, F.
1/01/24 → 30/06/25
Project: Toegepast
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VLAOO30: Haalbaarheidsstudie Project SANDRA
Jansen, B., Beckwée, D. & Stiens, J.
1/11/23 → 31/10/24
Project: Toegepast
Onderzoeksoutput
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An Introduction to Ventra: A Programmable Abdominal Phantom for Training, Educational, Research, and Development Purposes
Tayebi, S., Wise, R. D., Zarghami, A., Dabrowski, W., Malbrain, M. & Stiens, J., 22 aug 2024, In: Sensors (Basel, Switzerland). 24, 16, 19 blz., 5431.Onderzoeksoutput: Article › peer review
Open AccessBestand4 Downloads (Pure) -
A Taxonomy of Low-Power Techniques in Wearable Medical Devices for Healthcare Applications
Gudisa, W. T., Hora, W. J., Khan, M. I., Stiens, J. & da Silva, B., 5 aug 2024, In: Electronics. 13, 15, blz. 1-26 26 blz., 3097.Onderzoeksoutput: Article › peer review
Open Access -
Evaluating Vascular Depth-Dependent Changes in Multi-Wavelength PPG Signals Due to Contact Force
Lambert Cause, J., Sole Morillo, A., da Silva, B., Garcia-Naranjo, J. C. & Stiens, J., 24 apr 2024, In: Sensors (Basel, Switzerland). 24, 9, 18 blz., 2692.Onderzoeksoutput: Article › peer review
Open Access1 Citaat (Scopus) -
Evaluation of the impact of LED viewing angle and optical window choice on photoplethysmography signal quality
Sole Morillo, A., Lambert Cause, J., da Silva, B. & Stiens, J., 12 mrt 2024, Photoplethysmography (PPG) is a non-invasive optical technique used to extract physiological information by means of light interaction with the skin. PPG is widely used in pulse oximeters, and the evolution of wearable technologies is further enlarging its applications. A great variety of influencing factors impact the PPG waveform, making the correct feature extraction difficult and, therefore, limiting the accuracy of many PPG applications. The device hardware and software are among these influencing factors. This study evaluates the impact on the PPG signal quality of the LED viewing angle (luminous aperture) and the protective glass material, thickness, and anti-reflective coating, both important building blocks of a PPG sensor. Results suggest that the larger the viewing angle, the smaller the detected signal amplitude. The protective glass properties on the contrary does not seem to impact the detected signal amplitudes.. SPIEOnderzoeksoutput: Conference paper › Research
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Fracture monitoring of textile reinforced cementitious sandwich panels using non-contact millimeter wave spectrometry
Ospitia, N., Pourkazemi, A., Tsangouri, E., Angelis, D. & Stiens, J., 23 feb 2024, In: Construction and Building Materials. 417, blz. 1-11 11 blz., 135223.Onderzoeksoutput: Article › peer review
2 Citaten (Scopus)
Prijzen
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Best Student Paper
Zhang, L. (Recipient), Stiens, Johan (Recipient) & Sahli, Hichem (Recipient), 2008
Prijs: Prize (including medals and awards)
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Industrial Research Fund (IOF)
Stiens, Johan (Recipient), Poelaert, J. (Recipient), Verdonck, Michaël (Recipient) & Nogueira Carvalho, Hugo César (Recipient), 2020
Prijs: Other distinction
Activiteiten
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HiSilicon Sponsorship for Mini@sic tape-out
Lucas Moura Santana (Participant), Piet Wambacq (Participant) & Johan Stiens (Participant)
16 jun 2022Activiteit: Written proposal
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Optimization of a novel indirect calorimetry technique to measure energy expenditure of patients on ECMO
Sebastiaan Priem (Presenter), Johan Stiens (Contributor) & Elisabeth De Waele (Contributor)
11 okt 2022Activiteit: Talk or presentation at a conference
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Effect of the transimpedance amplifier topology on the photoplethysmography signal
Angel Sole Morillo (Presenter), Joan Lambert Cause (Contributor), Bruno Tiago da Silva Gomes (Contributor) & Johan Stiens (Contributor)
17 okt 2022 → 20 okt 2022Activiteit: Talk or presentation at a conference
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A novel radar-based sensor for non-invasive intra-abdominal pressure monitoring: from design towards clinical testing
Salar Tayebi (Participant), Johan Stiens (Supervisor), Manu Malbrain (Contributor) & Jan Poelaert (Contributor)
1 nov 2021 → 31 okt 2025Activiteit: Written proposal
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HiSilicon Sponsorship Program for MPW Prototyping
Lucas Moura Santana (Participant), Piet Wambacq (Participant) & Johan Stiens (Participant)
5 mei 2020Activiteit: Written proposal
Knipsels
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Contactloos vochtpercentage meten bij industriële droogprocessen
24/12/10
1 Mediabijdrage
Pers / media: !!Other
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VUB werkt aan contactloze temperatuursmeting bij industriële vriesprocessen
1/06/10
1 Mediabijdrage
Pers / media: !!Other
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Multi-parameter illumination and image processing in the W-band for concealed object detection
1/04/07
1 Mediabijdrage
Pers / media: !!Other
Scriptie
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A comparison of the by tDCS induced electrical field distribution between healthy controls and MS patients
Auteur: Thienpont, M., Van Schependom, J., Stiens, J. & Nagels, G., 2023Scriptie/Masterproef: Master's Thesis
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microwave based intra-abdominal pressure monitoring
Auteur: Stiens, J., Malbrain, M. & Tayebi, S., 2021Scriptie/Masterproef: Master's Thesis
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Quantitative Analysis of PPG Signals
Auteur: Tatazi, X., da Silva, B., Stiens, J. & Lambert Cause, J., 28 okt 2021Begeleider: Lambert Cause, J. (Promotor)
Scriptie/Masterproef: Master's Thesis
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Robustified multi-functional photoplethysmography (PPG) monitoring system for continuous vital signs detection: A Global Health challenge
Auteur: Stiens, J., Malbrain, M. & Sole Morillo, A., 2024Scriptie/Masterproef: Doctoral Thesis
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Simulating the stimulation of the human brain using novel stimulation paradigms
Auteur: Bodean, C., Van Schependom, J., Stiens, J. & Nagels, G., 2022Scriptie/Masterproef: Master's Thesis