Rough Gold Electrodes for Decreasing Impedance at the Electrolyte/Electrode Interface.
Rough Gold Electrodes for Decreasing Impedance at the Electrolyte/Electrode Interface.
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DOI：
10.1016/j.electacta.2016.04.048
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发表时间：
2016-07-01
影响因子：
6.6
通讯作者：
Beskok A
中科院分区：
文献类型：
--
作者：
Koklu A;Sabuncu AC;Beskok A
电解质/电极界面处的电极极化对于生物感测应用通常是不期望的，其中在恒定电势下在电极上积累的电荷导致界面处的大的电势降和低的测量灵敏度。在这项研究中，新的粗糙电极被开发用于降低界面处的电阻抗。使用金的电化学沉积和金纳米颗粒的烧结来制造电极。比较了金电极和铂黑电极的性能。采用恒相元模型描述界面阻抗。分形金电极和铂黑的界面阻抗降低了数百倍。生物毒性，接触角，和表面形貌的电极进行了研究。相对低的毒性和亲水性的分形和颗粒状的金电极，使它们适合于生物阻抗和细胞电操纵研究相比，铂黑电极，这是疏水性和毒性。
Electrode polarization at the electrolyte/electrode interface is often undesirable for bio-sensing applications, where charge accumulated over an electrode at constant potential causes large potential drop at the interface and low measurement sensitivity. In this study, novel rough electrodes were developed for decreasing electrical impedance at the interface. The electrodes were fabricated using electrochemical deposition of gold and sintering of gold nanoparticles. The performances of the gold electrodes were compared with platinum black electrodes. A constant phase element model was used to describe the interfacial impedance. Hundred folds of decrease in interfacial impedance were observed for fractal gold electrodes and platinum black. Biotoxicity, contact angle, and surface morphology of the electrodes were investigated. Relatively low toxicity and hydrophilic nature of the fractal and granulated gold electrodes make them suitable for bioimpedance and cell electromanipulation studies compared to platinum black electrodes which are both hydrophobic and toxic.
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影响因子：
4.6
作者：
Franks, W;Schenker, I;Hierlemann, A
通讯作者：
Hierlemann, A
聚吡咯合成技术的生物相容性影响。
DOI：
10.1088/1748-6041/3/3/034124
发表时间：
2008-09
期刊：
Biomedical materials (Bristol, England)
影响因子：
--
作者：
Fonner JM;Forciniti L;Nguyen H;Byrne JD;Kou YF;Syeda-Nawaz J;Schmidt CE
通讯作者：
Schmidt CE
影响因子：
4.6
作者：
Gelin, Kristina;Bodin, Aase;Stromme, Maria
通讯作者：
Stromme, Maria
影响因子：
5
作者：
Kubiak, K. J.;Wilson, M. C. T.;Carval, Ph.
通讯作者：
Carval, Ph.
影响因子：
12.6
作者：
Heileman, Khalil;Daoud, Jamal;Tabrizian, Maryam
通讯作者：
Tabrizian, Maryam