| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dekker, Ronald
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2023A Comparative Study of Si3N4 and Al2O3 as Dielectric Materials for Pre-Charged Collapse-Mode CMUTscitations
- 2023An Ultrasonically Powered System Using an AlN PMUT Receiver for Delivering Instantaneous mW-Range DC Power to Biomedical Implantscitations
- 2023Flip-chip bonding of InP die on SiN-based TriPleX carrier with novel laser solderingcitations
- 2023Flip-chip bonding of InP die on SiN-based TriPleX carrier with novel laser solderingcitations
- 2022Photonic flip-chip assembly of InP on TriPleX with laser soldering
- 2022Photonic flip-chip assembly of InP on TriPleX with laser soldering
- 2021The long-term reliability of pre-charged CMUTs for the powering of deep implanted devicescitations
- 2021Pre-charged collapse-mode capacitive micromachined ultrasonic transducer (CMUT) for broadband ultrasound power transfercitations
- 2020Embedded High-Density Trench Capacitors for Smart Catheterscitations
- 2019Effect of Signals on the Encapsulation Performance of Parylene Coated Platinum Tracks for Active Medical Implantscitations
- 2015Silicon-Based Technology for Integrated Waveguides and mm-Wave Systemscitations
Places of action
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document
Effect of Signals on the Encapsulation Performance of Parylene Coated Platinum Tracks for Active Medical Implants
Abstract
Platinum is widely used as the electrode material for implantable devices. Owing to its high biostability and corrosion resistivity, platinum could also be used as the main metallization for tracks in active implants. Towards this goal, in this work we investigate the stability of parylene-coated Pt tracks using passive and active tests. The test samples in this study are Pt-on-SiO 2 interdigitated comb structures. During testing all samples were immersed in saline for 150 days; for passive testing, the samples were left unbiased, whilst for active testing, samples were exposed to two different stress signals: a 5 V DC and a 5 Vp 500 pulses per second biphasic signal. All samples were monitored over time using impedance spectroscopy combined with optical inspection. After the first two weeks of immersion, delamination spots were observed on the Pt tracks for both passive and actively tested samples. Despite the delamination spots, the unbiased samples maintained high impedances until the end of the study. For the actively stressed samples, two different failure mechanisms were observed which were signal related. DC stressed samples showed severe parylene cracking mainly due to the electrolysis of the condensed water. Biphasically stressed samples showed gradual Pt dissolution and migration. These results contribute to a better understanding of the failure mechanisms of Pt tracks in active implants and suggest that new testing paradigms may be necessary to fully assess the long-term reliability of these devices.