Citation: YANG Li-Jun, ZHU Li, LU Bao-Chun, ZHANG Wei-Yi. Preparation of Electrochemical Microfluidic Device Based on Pulse Driving and Controlling of Microfluids Technique[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(6): 922-930. doi: 10.11895/j.issn.0253-3820.170055 shu

Preparation of Electrochemical Microfluidic Device Based on Pulse Driving and Controlling of Microfluids Technique

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Received Date: 21 January 2017
Revised Date: 20 April 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 51175268).

The fabrication system for the electrochemical microfluidic device was set up based on the pulse driving and controlling of microfluids technology. The nano silver ink and glycerol solution were jetted on the glass substrates to form the microelectrode pattern and the liquid mold pattern for the microchannel. Then the microelectrode and microchannel were obtained through a sintering process and a molding process, respectively. The electrochemical mircrofluidic device was Finally prepared through a bonding process with the microelectrode and the microchannel. The influences of the system parameters on the formation of the droplet were studied, as well as the influences of the droplets diameter and the overlap on the formation of the liquid lines. The minimal width, the thickness and the resistance of the prepared microelectrode were 45 μm, 2.2 μm and 5.2 μΩ cm, respectively. The minimal width of the microelectrode was 35 μm and the surface was smooth. The electrochemical flow detection of glucose concentration was carried out with the device, and the results showed that the glucose concentration had a high linear correlation with the response current, which could be used in the quantitative detection of glucose concentration. The fabrication of the electrochemical microfluidic device based on the pulse driving and controlling of micro fluids technology has many advantages such as simple system structure, lower cost and higher accuracy of the micro droplet and can be used in the preparation of the devices in the biochemical analysis and biosensor areas.
- Electrochemical microfluidic device,
- Microelectrode,
- Microchannel
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