Scaling Effects on the Electrochemical Performance of poly(3,4-ethylenedioxythiophene (PEDOT), Au, and Pt for Electrocorticography Recording

Ganji Mehran; Elthakeb Ahmed T.; Tanaka Atsunori; Gilja Vikash; Halgren Eric; Dayeh Shadi A.

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Scaling Effects on the Electrochemical Performance of poly(3,4-ethylenedioxythiophene (PEDOT), Au, and Pt for Electrocorticography Recording

机译：缩放对聚（3,4-乙撑二氧噻吩（PEDOT），Au和Pt的电化学性能的皮质电记录的缩放作用

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摘要

Reduced contact size would permit higher resolution cortical recordings, but the effects of diameter on crucial recording and stimulation properties are poorly understood. Here, the first systematic study of scaling effects on the electrochemical properties of metallic Pt and Au and organic poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) electrodes is presented. PEDOT:PSS exhibits better faradaic charge transfer and capacitive charge coupling than metal electrodes, and these characteristics lead to improved electrochemical performance and reduced noise at smaller electrode diameters. PEDOT:PSS coating reduces the impedances of metallic electrodes by up to 18x for diameters <200 mu m, but has no effect for millimeter scale contacts due to the dominance of series resistances. Therefore, the performance gains are especially significant at smaller diameters and lower frequencies essential for recording cognitive and pathological activities. Additionally, the overall reduced noise of the PEDOT:PSS electrodes enables a lower noise floor for recording action potentials. These results permit quantitative optimization of contact material and diameter for different electrocorticography applications.

机译：减小的接触尺寸将允许更高分辨率的皮质记录，但是人们对直径对关键记录和刺激特性的影响知之甚少。在这里，对金属Pt和Au以及有机聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸盐（PEDOT：PSS）电极的电化学性能的结垢效应进行了首次系统研究。 PEDOT：PSS表现出比金属电极更好的法拉第电荷转移和电容性电荷耦合，并且这些特性可改善电化学性能并在较小的电极直径下降低噪音。 PEDOT：PSS涂层可将直径小于200微米的金属电极的阻抗降低18倍，但由于串联电阻占主导地位，因此对毫米级触点没有影响。因此，在记录认知和病理活动必不可少的较小直径和较低频率下，性能提升尤为重要。此外，PEDOT：PSS电极的总体噪音降低，可降低本底噪声，从而记录动作电位。这些结果允许针对不同的皮层照相术应用对接触材料和直径进行定量优化。

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来源
《Advanced Functional Materials》 |2017年第42期|1703018.1-1703018.12|共12页
作者
Ganji Mehran; Elthakeb Ahmed T.; Tanaka Atsunori; Gilja Vikash; Halgren Eric; Dayeh Shadi A.;
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作者单位

Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA;

Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA;

Univ Calif San Diego, Mat Sci & Engn Program, La Jolla, CA 92093 USA;

Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA|Univ Calif San Diego, Neurosci Program, La Jolla, CA 92093 USA;

Univ Calif San Diego, Dept Radiol, La Jolla, CA 92093 USA|Univ Calif San Diego, Dept Neurosci, La Jolla, CA 92093 USA;

Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA|Univ Calif San Diego, Mat Sci & Engn Program, La Jolla, CA 92093 USA|Univ Calif San Diego, Dept NanoEngn, La Jolla, CA 92093 USA;

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正文语种 eng
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关键词
diameters; electrocorticography; PEDOT:PSS; scaling; sizes;

机译：直径;脑皮质描记术;PEDOT：PSS;缩放比例;尺寸;

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1. Scaling Effects on the Electrochemical Stimulation Performance of Au, Pt, and PEDOT:PSS Electrocorticography Arrays [J] . Ganji Mehran, Tanaka Atsunori, Gilja Vikash, Advanced Functional Materials . 2017,第42期

机译：缩放对Au，Pt和PEDOT：PSS电皮层成像阵列的电化学刺激性能的影响
2. Chronic neural recordings using silicon microelectrode arrays electrochemically deposited with a poly(3,4-ethylenedioxythiophene) (PEDOT) film [J] . Kip A Ludwig, Jeffrey D Uram, Junyan Yang, Journal of neural engineering . 2006,第1期

机译：慢性神经记录使用化学沉积有聚（3,4-乙撑二氧噻吩）（PEDOT）膜的硅微电极阵列
3. The Effects of Electrodeposition Current Density on the Morphology, Electrochemical and Biological Characteristics of Poly(3,4ethylenedioxythiophene): Poly(Styrenesulfonate) (PEDOT-PSS) Neural Interfaces [J] . Vallejo-Giraldo C., Pandit A., Biggs M. J. P. Irish journal of medical science . 2016,第1期

机译：电沉积电流密度对聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸盐（PEDOT-PSS）神经界面的形态，电化学和生物学特性的影响
4. The Effects of Current Density on the Morphology, Electrochemical and Biological Characteristics of Poly(3,4ethylenedioxythiophene): Poly(styrenesulfonate) (PEDOT-PSS) Conducting Films [C] . Catalina Valleio-Giraldo, Abhay Pandit, Manus Jonathan Paul Biggs European conference on biomaterials . 2014

机译：电流密度对聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸盐（PEDOT-PSS）导电膜的形貌，电化学和生物学特性的影响
5. Microstructure-Dependent Electrochemical Properties of Chemical-Vapor Deposited POLY(3,4-Ethylenedioxythiophene) (Pedot) Films [D] . Arnold, Sean. 2019

机译：化学气相沉积的POLY（3,4-Ethylenedioxythiophene）（Pedot）薄膜的微观结构相关电化学性能
6. Impedimetric Biosensors for Detecting Vascular Endothelial Growth Factor (VEGF) Based on Poly(3,4-ethylene dioxythiophene) (PEDOT)/Gold Nanoparticle (Au NP) Composites [O] . Minsoo Kim, Raymond Iezzi, Jr., Bong Sup Shim, 1970

机译：基于聚（3,4-乙撑二氧噻吩）（PEDOT）/金纳米粒子（Au NP）复合材料的检测血管内皮生长因子（VEGF）的阻抗生物传感器
7. Scaling Effects on the Electrochemical Performance of poly(3,4‐ethylenedioxythiophene (PEDOT), Au, and Pt for Electrocorticography Recording [O] . Mehran Ganji, Ahmed T. Elthakeb, Atsunori Tanaka, 2017

机译：对聚（3,4-亚乙二醇噻吩（PEDOT），Au和Pt用于电凝记录的电化学性能的缩放效果

Scaling Effects on the Electrochemical Performance of poly(3,4-ethylenedioxythiophene (PEDOT), Au, and Pt for Electrocorticography Recording

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