A Ferroelectric Ceramic/Polymer Composite-Based Capacitive Electrode Array for In Vivo Recordings.

Authors :: Chen C
Xue M
Wen Y
Yao G
Cui Y
Liao F
Yan Z
Huang L
Khan SA
Gao M
Pan T
Zhang H
Jing W
Guo D
Zhang S
Yao H
Zhou X
Li Q
Xia Y
Lin Y
Source :: Advanced healthcare materials [Adv Healthc Mater] 2017 Aug; Vol. 6 (16). Date of Electronic Publication: 2017 May 11.
Publication Year :: 2017
Abstract: A new implantable capacitive electrode array for electrocorticography signal recording is developed with ferroelectric ceramic/polymer composite. This ultrathin and electrically safe capacitive electrode array is capable of attaching to the biological tissue conformably. The barium titanate/polyimide (BaTiO <subscript>3</subscript> /PI) nanocomposite with high dielectric constant is successfully synthesized and employed as the ultrathin dielectric layer of the capacitive BaTiO <subscript>3</subscript> /PI electrode array. The performance of the capacitive BaTiO <subscript>3</subscript> /PI electrode array is evaluated by electrical characterization and 3D finite-element modeling. In vivo, neural experiments on the visual cortex of rats show the reliability of the capacitive BaTiO <subscript>3</subscript> /PI electrode array. This work shows the potentials of capacitive BaTiO <subscript>3</subscript> /PI electrode array in the field of brain/computer interfaces.<br /> (© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Subjects :: Animals
Barium Compounds chemistry
Ceramics chemistry
Equipment Design
Finite Element Analysis
Male
Polymers chemistry
Rats
Rats, Wistar
Reproducibility of Results
Titanium chemistry
Visual Cortex physiology
Visual Cortex surgery
Electrodes, Implanted
Electroencephalography instrumentation
Microelectrodes
Nanocomposites chemistry

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