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Feedback control system for large scale 2D digital microfluidic platforms
Sensors and Actuators B: Chemical ( IF 8.4 ) Pub Date : 2017-09-14 , DOI: 10.1016/j.snb.2017.09.071
Chunqiao Li , Kaidi Zhang , Xubo Wang , Jian Zhang , Hong Liu , Jia Zhou

As a promising candidate of point-of-care devices (POC), digital microfluidic (DMF), driven by the electrowetting-on-dielectric (EWOD), has been developed quickly in recent years. However, flourishing functions require more controlled electrodes, i.e., a large-scale EWOD. Limited to cost, complexity and flexibility, existing control techniques lack strength in meeting the need of controlling increasing number of electrodes. Here, inspired by the active matrix electrowetting-on-dielectric (AM-EWOD), we present a “direct-address based on cross-control” (DACC) method, which can easily realize N + M pins controlling N × M electrodes and guarantee the control flexibility meanwhile. Moreover, combining with impedance detection technique, we set up a cheap and portable cyberphysical system. The system’s software, written in JAVA, has a user-friendly interface and can sense all sites of the DMF in real-time and auto-design routes for droplets to bypass barriers. This novel integrated digital microfluidic system shows great potential for developing low-cost, portable, and automated EWOD DMFs in large-scale.



中文翻译:

大规模2D数字微流体平台的反馈控制系统

作为即时护理设备(POC)的有前途的候选者,近年来,由介电体电润湿(EWOD)驱动的数字微流控(DMF)已得到快速发展。然而,繁华的功能需要更多可控的电极,,大型EWOD。受成本,复杂性和灵活性的限制,现有的控制技术缺乏满足控制越来越多的电极的需求的强度。在这里,受有源矩阵电介质上电润湿(AM-EWOD)的启发,我们提出了一种“基于交叉控制的直接地址”(DACC)方法,该方法可以轻松实现控制N×M电极的N + M引脚和同时保证控制的灵活性。此外,结合阻抗检测技术,我们建立了一个便宜且便携式的网络物理系统。用JAVA编写的系统软件具有友好的用户界面,可以实时和自动设计路线感应DMF的所有位置,以使液滴绕过障碍。这种新颖的集成式数字微流控系统显示出开发低成本,便携式,

更新日期:2017-09-14
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