Electrowetting on dielectric device with crescent electrodes for reliable and low-voltage droplet manipulation |
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| Authors: | Xiaowei Xu Lining Sun Liguo Chen Zhaozhong Zhou Junjian Xiao Yuliang Zhang |
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| Institution: | 1.College of Mechanical Engineering, Quzhou University, Quzhou 324000, China;2.Robotics and Microsystem Center and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215001, China |
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| Abstract: | Digital microfluidics based on electrowetting on dielectric is an emerging popular technology that manipulates single droplets at the microliter or even the nanoliter level. It has the unique advantages of rapid response, low reagent consumption, and high integration and is mainly applied in the field of biochemical analysis. However, currently, this technology still has a few problems, such as high control voltage, low droplet velocity, and continuity in flow, limiting its application. In this paper, through theoretical analysis and numerical simulation, it is deduced that a drive electrode with a crescent configuration can reduce the driving voltage. The experimental results not only validate this deduction but also indicate that crescent electrode can improve the droplet motion continuity and the success in split rate. |
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