| Literature DB >> 28493386 |
Changyong Chen1, Miaomiao Xue2, Yige Wen1, Guang Yao1, Yan Cui2, Feiyi Liao1, Zhuocheng Yan1, Long Huang1, Saeed Ahmed Khan1, Min Gao1,3, Taisong Pan1, Hulin Zhang1, Wei Jing2, Daqing Guo2,3, Sanfeng Zhang4, Hailiang Yao4, Xiong Zhou4, Qiang Li4, Yang Xia2,3, Yuan Lin1,3.
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 (BaTiO3 /PI) nanocomposite with high dielectric constant is successfully synthesized and employed as the ultrathin dielectric layer of the capacitive BaTiO3 /PI electrode array. The performance of the capacitive BaTiO3 /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 BaTiO3 /PI electrode array. This work shows the potentials of capacitive BaTiO3 /PI electrode array in the field of brain/computer interfaces.Entities:
Keywords: barium titanate/polyimide (BaTiO3/PI); brain/computer interfaces (BCI); capacitive sensing; electrocorticography (ECoG); electrode arrays
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Year: 2017 PMID： 28493386 DOI： 10.1002/adhm.201700305
Source DB: PubMed Journal: Adv Healthc Mater ISSN： 2192-2640 Impact factor: 9.933