In recent years, the open electrowetting on dielectric (EWOD) device has been widely used in biomedical detection, chemical synthesis analysis, and so on. However, the cost of using ITO glass as surface material is difficult to meet the requirement for large-scale array chip production. So, a low-cost, easy-to-manufacture open EWOD platform is designed in this paper. In hardware platform, an operation platform is prepared by using a printed circuit board (PCB) as a substrate. The electrode shape is designed as zigzag, and its surface is optimized by organic solderability preservatives (OSP). In addition, Parafilm M and silicone oil are used as a dielectric hydrophobic layer to prepare the open platform. In software, the system program is designed by C programming language, including initialization program, serial port communication program, high-voltage output port program, and interrupt program, which can be used to drive droplets. The system can achieve an effective driving voltage of 180–240 V. The moving speed of droplets can reach 15 mm/s when the droplet volume is 1850 μL and the electrode voltage output frequency is 10 Hz.

近年来，开放电介质上电润湿（EWOD）装置已广泛用于生物医学检测，化学合成分析等。然而，使用ITO玻璃作为表面材料的成本难以满足大规模阵列芯片生产的需求。因此，本文设计了一种低成本，易于制造的开放式EWOD平台。在硬件平台中，通过使用印刷电路板（PCB）作为基板来准备操作平台。电极形状设计为锯齿形，其表面通过有机可焊性防腐剂（OSP）进行了优化。另外，将Parafilm M和硅油用作疏水介电层以制备开放平台。在软件中，系统程序是用C编程语言设计的，包括初始化程序，串口通讯程序，高压输出端口程序和中断程序，可用于驱动墨滴。该系统可以实现180-240 V的有效驱动电压。当液滴体积为1850μL，电极电压输出频率为10 Hz时，液滴的移动速度可以达到15 mm / s。