Fabrication of a novel liquid metal microelectrode in microfluidic chip
Fabrication of a novel liquid metal microelectrode in microfluidic chip
复制标题
微流控芯片中新型液态金属微电极的制备
DOI：
10.1142/s0217984921400054
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发表时间：
2021-03
影响因子：
1.9
通讯作者：
Jiang Hai
中科院分区：
文献类型：
--
作者：
Gong Yanli;Peng Bei;Weng Xuan;Jiang Hai
电动现象是微流体中一种良好的流体控制工具，通常微电极在此类方法中起着重要作用，比如产生所需的电场。尽管二维（2D）微电极的制造已经相对……
Electrokinetics is a good fluid control tool in microfluidics and usually microelectrodes play important roles in such approach such as generating a desired electric field. Though the fabrication of two-dimensional (2D) microelectrodes has been relatively mature, they cannot generate uniform electric field in space. Three-dimensional (3D) microelectrodes developed more recently may solve the problem, however the fabrication process is usually complicated and requires micro-alignment platform. Non-toxic liquid metal is a good material for making electrodes that has been introduced into microfluidics. It can be injected directly into a microchannel to form an electrode, but its special physical properties make the injection process complex and difficult to control. In this study, we investigated an optimized manufacturing method of liquid metal microelectrode in a microchip by numerical analysis and experimental study. High quality microelectrodes on morphology and stability were successfully fabricated. A fluorescent enrichment experiment was performed using the developed microelectrode in a microfluidic chip. The result shows that the optimized fabrication method of microelectrode in this study provides a promising way for high quality and good performance liquid metal microelectrode formation, and paves the way for its versatile applications.