Carbon Nanotube Yarns for Deep Brain Stimulation Electrode

A new form of deep brain stimulation (DBS) electrode was proposed that was made of carbon nanotube yarns (CNTYs). Electrode interface properties were examined using cyclic voltammetry (CV) and electrochemical impedance spectrum (EIS). The CNTY electrode interface exhibited large charge storage capac...

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Bibliographic Details
Published inIEEE transactions on neural systems and rehabilitation engineering Vol. 19; no. 6; pp. 612 - 616
Main Authors Jiang, Changqing, Li, Luming, Hao, Hongwei
Format Journal Article
LanguageEnglish
Published United States IEEE 01.12.2011
Subjects
Algorithms
Brain modeling
Carbon nanotube yarn (CNTY)
Carbon nanotubes
deep brain stimulation (DBS)
Deep Brain Stimulation - instrumentation
Electric Impedance
Electrochemistry
electrode interface
Electrodes
Electronics
Equipment Design
Humans
Impedance
Iridium
Materials Testing
Microscopy, Electron, Scanning
Nanotubes, Carbon
Neurons - physiology
Oxidation-Reduction
Platinum
Porosity
Surface impedance
Surface treatment
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Summary:A new form of deep brain stimulation (DBS) electrode was proposed that was made of carbon nanotube yarns (CNTYs). Electrode interface properties were examined using cyclic voltammetry (CV) and electrochemical impedance spectrum (EIS). The CNTY electrode interface exhibited large charge storage capacity (CSC) of 12.3 mC/cm 2 which increased to 98.6 mC/cm 2 after acid treatment, compared with 5.0 mC/cm 2 of Pt-Ir. Impedance spectrum of both untreated and treated CNTY electrodes showed that finite diffusion process occurred at the interface due to their porous structure and charge was delivered through capacitive mechanism. To evaluate stability electrical stimulus was exerted for up to 72 h and CV and EIS results of CNTY electrodes revealed little alteration. Therefore CNTY could make a good electrode material for DBS.
ISSN:1534-4320
1558-0210
DOI:10.1109/TNSRE.2011.2165733