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Pre-implantation electrochemical characterization of a Parylene C sheath microelectrode array probe

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7 Author(s)
Hara, S.A. ; Dept. of Biomed. Eng., Univ. of Southern California, Los Angeles, CA, USA ; Kim, B.J. ; Kuo, J.T.W. ; Lee, C.
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We present the preliminary electrochemical characterization of 3D Parylene C sheath microelectrode array probes towards realizing reliable chronic neuroprosthetic recordings. Electrochemical techniques were used to verify electrode integrity after our novel post-fabrication thermoforming process was applied to flat surface micromachined structures to achieve a hollow sheath probe shape. Characterization of subsequent neurotrophic coatings was performed and accelerated life testing was used to simulate six months in vivo. Prior to probe implantation, crosstalk was measured and electrode surface properties were evaluated through the use of electrochemical impedance spectroscopy.

Published in:

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Date of Conference:

Aug. 28 2012-Sept. 1 2012