Localized Electrodeposition and Patterning Using Bipolar Electrochemistry
Localized Electrodeposition and Patterning Using Bipolar Electrochemistry
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使用双极电化学进行局部电镀和图案化
DOI：
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发表时间：
2015
期刊：
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通讯作者：
D. Schwartz
中科院分区：
文献类型：
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作者：
T. Braun;D. Schwartz
使用我们称为扫描双极池 (SBC) 的工具，可以在电浮动宏观导电基板上进行微观、空间控制和高效的双极电化学。 SBC 的工作原理是电流遵循电阻最小的路径。通过使用具有微射流单元几何形状的中等电导率电解质，可以在邻近导电基底的电解质中产生高欧姆电势降，从而在微射流下方的基底上诱导局部电荷转移。持续双极电化学所需的相等且相反的氧化还原化学分布在浮动导电基板的宏观远场上。我们结合实验和有限元模拟来证明该系统使用可逆铜氧化还原化学。在 SBC 中，与表面的双极电化学耦合可以非常高效，并且由界面电荷转移和溶液欧姆电阻的平衡控制，如系统的瓦格纳数所表征。 © 作者 2015。ECS 出版。这是一篇根据知识共享署名非商业性无衍生品 4.0 许可证（CC BY-NC-ND，http://creativecommons.org/licenses/by-nc-nd/4.0/）条款分发的开放获取文章，该许可证允许在任何媒体中非商业性地重复使用、分发和复制，前提是原始作品不以任何方式更改并正确引用。如需商业再利用许可，请发送电子邮件至：oa@ electrochem.org。 [DOI：10.1149/2.1031504jes] 保留所有权利。
Microscopic, spatially controlled, and highly efficient bipolar electrochemistry can be performed on an electrically-floating macroscopic conductive substrate using a tool we call the Scanning Bipolar Cell (SBC). The operating principle for the SBC is that current follows the path of least resistance. A high ohmic potential drop can be generated in the electrolyte adjacent to the conductive substrate by using a moderate conductivity electrolyte with a microjet cell geometry, inducing localized charge transfer on the substrate beneath the microjet. The equal and opposite redox chemistry necessary for sustained bipolar electrochemistry is spread over the macroscopic far-field of the floating conductive substrate. We combine experiments and finite element simulations to demonstrate this system using reversible copper redox chemistry. Bipolar electrochemical coupling to the surface can be highly efficient in the SBC and is governed by the balance of interfacial charge transfer and solution ohmic resistances, as characterized by the Wagner number of the system. © The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. [DOI: 10.1149/2.1031504jes] All rights reserved.