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Fabrication of strongly adherent platinum black coatings on microelectrodes array
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DOI：10.1007/s11432-013-4825-6.png)
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Abstract
En 中文
Platinum black coating can effectively improve the performance of MEAs (microelectrodes array) in neural signal transduction, though its lack of adhesion strength and durability tampers its usage in long term experiments. Here a new method of composite electrodeposition provides highly adhesive platinum black coating that enables MEAs for a month's long task and repeatable utilization. The new method was compared with present techniques on multiple aspects, e. g. actual surface area, surface morphology, interfacial impedance, durability and real application tests. Results show that the new composite coating provides greatly improved durability without compromising its performances. Neural cells were cultured on these MEAs for 40 days in vitro and spontaneous action potentials with high signal/noise ratio were recorded. Theoretical model and simulation provided preliminary understanding on the mechanism of this strengthened platinum black coating.
Keywords:
microelectrode array
platinum black
electroplating
electrophysiology
neural culture
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