Mechanical characterization of neural electrodes based on PDMS-parylene C-PDMS sandwiched system

Mechanical characterization of neural electrodes based on PDMS-parylene C-PDMS sandwiched system

Manufacturing of neural electrodes based on metal foil and silicone rubber using a laser is a simple and promising method. A handicap of such electrode arrays is the mechanical robustness of the thin metal tracks that connect the electrode sites with the interconnection pads. Embedding of structured...

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Hauptverfasser: Henle, C., Hassler, C., Kohler, F., Schuettler, M., Stieglitz, T.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Action Potentials - physiology
Animals
Biocompatible Materials - chemistry
Dimethylpolysiloxanes - chemistry
Elastic Modulus
Electrodes
Equipment Design
Equipment Failure Analysis
Humans
Lasers
Materials
Neurons - physiology
Nylons - chemistry
Platinum
Robustness
Rubber
Tensile Strength
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Beschreibung
Zusammenfassung:Manufacturing of neural electrodes based on metal foil and silicone rubber using a laser is a simple and promising method. A handicap of such electrode arrays is the mechanical robustness of the thin metal tracks that connect the electrode sites with the interconnection pads. Embedding of structured parylene C foil in silicone rubber turned out to be an interesting method to increase the robustness. Test samples with 12.5 μm thick platinum tracks and a 15 μm thick embedded and RIE-structured parylene C foil showed more than 800 % higher ultimate strength until breakage of the tracks. Different structured parylene C foil showed increasing robustness with increasing hole-spacing.
ISSN:1094-687X
1557-170X
1558-4615
DOI:10.1109/IEMBS.2011.6090142