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数字微流控芯片不仅具有传统微流控芯片的试剂消耗量小、分析速度快、体积小、便于集成化优点,更具有可配置、可并行处理及易实现自动化的优势,其中介电润湿是数字微流控最重要和最有前景的驱动方式。首先介绍了数字微流控芯片的工作原理,分析了液滴的受力情况,然后为系统建立动态模型,在实验基础上确定了系统的阻力系数,并将仿真结果与实验数据相比较,结果表明动态模型可以比较准确的预测系统的运动情况。
The digital microfluidic chip not only has the advantages of small reagent consumption, fast analysis, small size and convenient integration, but also has the advantages of configurability, parallel processing and easy automation. The dielectric wetting Digital microfluidics is the most important and most promising way to drive. Firstly, the working principle of the digital microfluidic chip is introduced, the force of droplet is analyzed, and then the dynamic model of the system is established. Based on the experiment, the drag coefficient of the system is determined, and the simulation result is compared with the experimental data. The result It shows that the dynamic model can predict the movement of the system more accurately.