Abstract
In this paper, we present a single-plate electro-wetting on dielectric (SEWOD) device by integrating an island-ground electrode (IG), which is surrounded by the driving electrodes and looks like an island. Both experiments and theoretical analysis have been conducted to investigate the performance of the IG-SEWOD device. The driving voltage of a fabricated IG-SEWOD has been measured to be 15 V, which is half of that of a floating SEWOD. The digital dynamic properties of the EWOD device are greatly enhanced due to the “double locking” effect and rapid residual charges elimination provided by the IG. The proposed EWOD device shows great potential in constructing advanced microfluidics platforms for bio-chemical detection and disease diagnosis.
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