Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 91-94 |
| Seitenumfang | 4 |
| Fachzeitschrift | Current Directions in Biomedical Engineering |
| Jahrgang | 10 |
| Ausgabenummer | 4 |
| Publikationsstatus | Veröffentlicht - 19 Dez. 2024 |
Abstract
The corrosion behavior of platinum electrodes in cochlear implant (CI) systems is a critical factor affecting their long-term functionality. This study investigated the influence of the surface roughness of the platinum electrodes on their corrosion behavior. The results of in vitro experiments indicate that higher surface roughness tends to accelerate corrosion by providing numerous initiation sites. Although the electrochemical measurements of platinum electrodes with different surface roughnesses showed only slight differences in terms of shifts in potentials and higher corrosion current densities, data from the literature suggests an enhanced charge capacity with rougher surfaces. These findings contribute to an understanding of the failure mechanisms of CIs and can ultimately help to improve the design and durability of CI systems.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Biomedizintechnik
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in: Current Directions in Biomedical Engineering, Jahrgang 10, Nr. 4, 19.12.2024, S. 91-94.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Surface Roughness-Dependent Corrosion
T2 - Implications for Cochlear Implant Reliability
AU - Blank, Tatiana
AU - Behrens, Sabine
AU - Klose, Christian
AU - Maier, Hans Jürgen
N1 - Publisher Copyright: © 2024 by Walter de Gruyter Berlin/Boston.
PY - 2024/12/19
Y1 - 2024/12/19
N2 - The corrosion behavior of platinum electrodes in cochlear implant (CI) systems is a critical factor affecting their long-term functionality. This study investigated the influence of the surface roughness of the platinum electrodes on their corrosion behavior. The results of in vitro experiments indicate that higher surface roughness tends to accelerate corrosion by providing numerous initiation sites. Although the electrochemical measurements of platinum electrodes with different surface roughnesses showed only slight differences in terms of shifts in potentials and higher corrosion current densities, data from the literature suggests an enhanced charge capacity with rougher surfaces. These findings contribute to an understanding of the failure mechanisms of CIs and can ultimately help to improve the design and durability of CI systems.
AB - The corrosion behavior of platinum electrodes in cochlear implant (CI) systems is a critical factor affecting their long-term functionality. This study investigated the influence of the surface roughness of the platinum electrodes on their corrosion behavior. The results of in vitro experiments indicate that higher surface roughness tends to accelerate corrosion by providing numerous initiation sites. Although the electrochemical measurements of platinum electrodes with different surface roughnesses showed only slight differences in terms of shifts in potentials and higher corrosion current densities, data from the literature suggests an enhanced charge capacity with rougher surfaces. These findings contribute to an understanding of the failure mechanisms of CIs and can ultimately help to improve the design and durability of CI systems.
KW - cochlear implant
KW - corrosion
KW - cyclic voltammetry
KW - platinum
KW - polarization measurement
KW - roughness
UR - http://www.scopus.com/inward/record.url?scp=85218504784&partnerID=8YFLogxK
U2 - 10.1515/cdbme-2024-2022
DO - 10.1515/cdbme-2024-2022
M3 - Article
VL - 10
SP - 91
EP - 94
JO - Current Directions in Biomedical Engineering
JF - Current Directions in Biomedical Engineering
IS - 4
ER -