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42 results on '"Vervust, Thomas"'

14. Stretchable Circuits: 3D Multifunctional Composites Based on Large-Area Stretchable Circuit with Thermoforming Technology (Adv. Electron. Mater. 8/2018)

Author

Yang, Yang, primary, Vervust, Thomas, additional, Dunphy, Sheila, additional, Van Put, Steven, additional, Vandecasteele, Bjorn, additional, Dhaenens, Kristof, additional, Degrendele, Lieven, additional, Mader, Lothar, additional, De Vriese, Linde, additional, Martens, Tom, additional, Kaufmann, Markus, additional, Sekitani, Tsuyoshi, additional, and Vanfleteren, Jan, additional

Published
2018
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16. 3D Multifunctional Composites Based on Large-Area Stretchable Circuit with Thermoforming Technology

Author

Yang, Yang, primary, Vervust, Thomas, additional, Dunphy, Sheila, additional, Van Put, Steven, additional, Vandecasteele, Bjorn, additional, Dhaenens, Kristof, additional, Degrendele, Lieven, additional, Mader, Lothar, additional, De Vriese, Linde, additional, Martens, Tom, additional, Kaufmann, Markus, additional, Sekitani, Tsuyoshi, additional, and Vanfleteren, Jan, additional

Published
2018
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22. PCB technology based stretchable circuits

Author

Vanfleteren, Jan, Gonzalez, Mario, Bossuyt, Frederick, Vervust, Thomas, De Wolf, Ingrid, and Jablonski, Michal

Subjects
Technology and Engineering, PCB, Hardware_INTEGRATEDCIRCUITS, Stretchable Electronics, Smart Textiles, Printed Circuit Boards
Abstract

In the past 15 years, stretchable electronic circuits have emerged as a new technology in the domain of assembly, interconnections, and sensor circuit technologies. In the meantime, a wide variety of processes using many different materials have been explored in this new field. In the current contribution, we present an approach inspired by conventional rigid and flexible printed circuit board (PCB) technology. Similar to PCBs, standard packaged, rigid components are assembled on copper contact pads using lead-free solder reflow processes. Stretchability is obtained by shaping the copper tracks as horseshoe-shaped meanders. Elastic materials, predominantly polydimethylsiloxanes, are used to embed the conductors and the components, thus serving as a circuit carrier. We describe mechanical modeling, aimed at optimizing the build-up toward maximum mechanical reliability of the structures. Details on the production process, reliability assessment, and a number of functional demonstrators are described.

Published
2013

30. Vision

Author

Simoens, Pieter, primary, De Coninck, Elias, additional, Vervust, Thomas, additional, Van Wijmeersch, Jan-Frederik, additional, Ingelbinck, Tom, additional, Verbelen, Tim, additional, Op de Beeck, Maaike, additional, and Dhoedt, Bart, additional

Published
2014
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34. Design and fabrication of a shielded interdigital sensor for noninvasive In situ real-time production monitoring of polymers.

Author

Yang, Yang, Chiesura, Gabriele, Vervust, Thomas, Degrieck, Joris, and Vanfleteren, Jan

Subjects
INTERDIGITAL transducers, MICROGELS, IONIC strength, CHAIN scission, ELECTROSTATIC actuators
Abstract

ABSTRACT Interdigital sensors (IDS) have received great attention for production monitoring of polymers over the past decade. However, conventional IDS are limited by high noise to environment due to the dual side access of the sensor, low nominal capacitance, and sensitivity. In this study, a shielded IDS fabricated by flexible circuit board (FCB) technology is presented to overcome these challenges. Compared to conventional sensors, the environmental dependence of the new sensor is minimized by the copper shield. Furthermore, nominal capacitance of at least 350% higher, and an increase of sensitivity per unit area are achieved. To demonstrate the capabilities of the new IDS, a FCB comprising the proposed sensor is fabricated, attached to a mould, and successfully applied for in situ real-time production monitoring of an epoxy resin. The resulting flexible sensor is noninvasive towards the fabricated parts, and measures the key stages along the production process. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 2028-2037 [ABSTRACT FROM AUTHOR]

Published
2016
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38. Active textile antennas in professional garments for sensing, localisation and communication.

Author

Berroth, Manfred, Jacob, Arne F., Schmidt, Lorenz-Peter, Dierck, Arnaut, Agneessens, Sam, Declercq, Frederick, Spinnewyn, Bart, Stockman, Gert-Jan, Van Torre, Patrick, Vallozzi, Luigi, Vande Ginste, Dries, Vervust, Thomas, Vanfleteren, Jan, and Rogier, Hendrik

Abstract

New wireless wearable monitoring systems integrated in professional garments require a high degree of reliability and autonomy. Active textile antenna systems may serve as platforms for body-centric sensing, localisation, and wireless communication systems, in the meanwhile being comfortable and invisible to the wearer. We present a new dedicated comprehensive design paradigm and combine this with adapted signal-processing techniques that greatly enhance the robustness and the autonomy of these systems. On the one hand, the large amount of real estate available in professional rescue worker garments may be exploited to deploy multiple textile antennas. On the other hand, the size of each radiator may be designed large enough to ensure high radiation efficiency when deployed on the body. This antenna area is then reused by placing active electronics directly underneath and energy harvesters directly on top of the antenna patch. We illustrate this design paradigm by means of recent textile antenna prototypes integrated in professional garments, providing sensing, positioning, and communication capabilities. In particular, a novel wearable active Galileo E1-band antenna is presented and fully characterized, including noise figure, and linearity performance. [ABSTRACT FROM PUBLISHER]

Published
2014
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41. The Augmented Movement Platform For Embodied Learning (AMPEL): development and reliability

Author

Micheline Lesaffre, Joren Six, Marc Leman, Peter Feys, Thomas Vervust, Lousin Moumdjian, Ivan Schepers, Feys, Peter/0000-0002-5680-5495, MOUMDJIAN, Lousin, Vervust, Thomas, Six, Joren, Schepers, Ivan, Lesaffre, Micheline, FEYS, Peter, and Leman, Marc

Subjects
Technology, Augmented feedback, Computer science, Population, 050105 experimental psychology, Plug-in system, 03 medical and health sciences, 0302 clinical medicine, Gait (human), Human–computer interaction, 0501 psychology and cognitive sciences, Session (computer science), education, Reliability (statistics), Balance (ability), education.field_of_study, 05 social sciences, Cognition, Auditory and visual feedback, Human-Computer Interaction, Participatory design strategy, Embodied environment, Embodied cognition, Signal Processing, Motor learning, 030217 neurology & neurosurgery
Abstract

Balance and gait impairments are highly prevalent in the neurological population. Although current rehabilitation strategies focus on motor learning principles, it is of interest to expand into embodied sensori-motor learning; that is learning through a continuous interaction between cognitive and motor systems, within an enriched sensory environment. Current developments in engineering allow for the development of enriched sensory environments through interactive feedback. The Augmented Movement Platform for Embodied Learning (AMPEL) was developed, both in terms of hardware and software by an inter-disciplinary circular participatory design strategy. The developed device was then tested for in-between session reliability for the outcome measures inter-step interval and total onset time. Ten healthy participants walked in four experimental paths on the device in two different sessions, and between session correlations were calculated. AMPEL was developed both in terms of software and hardware, with three Plug-In systems (auditory, visual, auditory + visual). The auditory Plug-In allows for flexible application of augmented feedback. The in-between session reliability of the outcomes measured by the system were between high and very high on all 4 walked paths, tested on ten healthy participants [mean age 41.8 +/- 18.5; BMI 24.8 +/- 6.1]. AMPEL shows full functionality, and has shown between session reliability for the measures of inter-step-intervals and total-onset-time in healthy controls during walking on different paths. We acknowledge the Methusalem project (awarded by the Flemish Government) at UGent and the UHasselt BOF grant for funding this study. Moumdjian, L (corresponding author), Univ Ghent, IPEM Inst Psychoacoust & Elect Mus, Fac Arts & Philosophy, B-9000 Ghent, Belgium ; UMSC Hasselt, Pelt, Belgium ; Hasselt Univ, Fac Rehabil Sci, REVAL Rehabil Res Ctr, B-3500 Hasselt, Belgium. lousin.moumdjian@uhasselt.be

Published
2021

42. In vitro cytotoxicity testing and the application of elastic interconnection technology for short-term implantable electronics.

Author

Brosteaux D, Lippens E, Cornelissen R, Schacht E, Carta R, Jourand P, Puers R, Axisa F, Vervust T, Bossuyt F, and Vanfleteren J

Subjects
Animals, Cell Survival drug effects, Cells, Cultured, Chickens, Silicones chemistry, Electronics, Medical instrumentation, Electronics, Medical methods, Prostheses and Implants adverse effects
Abstract

An electronic device was fabricated consisting of 2 flexible electronic circuit islands, interconnected by a 7 cm long elastic interconnection, which could be elongated for at least 50%. This interconnection was based on gold conductor tracks following a 2-D spring pattern, embedded in a biocompatible silicone elastomer. The complete device was embedded in the same silicone elastomer. An in vitro cytotoxicity extraction test, executed on small test-samples in accordance with the ISO 10 993-1 guidelines, revealed that the applied silicone encapsulation to these samples functioned as a good seal for at least 8 days.

Published
2009
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