Presentation Information
[9p-E215-3]Transparent AC-EWOD Devices for Water Droplet Removal Using Graphene Electrodes
〇(M2)Shiguma Aoki1, Shunya Matsumoto1, Masashi Takagi2, Kazuyuki Shiratori2, Watanabe Takeshi1, Shinji Koh1 (1.Aoyama Gakuin Univ., 2.Nissan Motor Co.)
Keywords:
graphene,transparent conductive film,erectrowetting
Electrowetting on Dielectric (EWOD) is a liquid manipulation technique capable of removing water droplets from glass surfaces and has attracted considerable attention for applications in wiperless mobility systems. However, the practical implementation of EWOD devices is hindered by the requirement for high operating voltages and reliability degradation caused by dielectric breakdown. In this study, a highly transparent and ultrathin AC-EWOD device employing monolayer graphene electrodes was fabricated and evaluated. Under an applied voltage of 110 V at 40 Hz, 94% of the water droplets were removed within 1 s, demonstrating effective droplet removal performance. Furthermore, periodic voltage actuation was investigated as a method for improving long-term operational stability.