Abstract
This paper describes effects of characteristics of liquid on droplet transportation of EWOD (Electrowetting on dielectric) microfluidic devices. EWOD is a technology for manipulating droplets discretely by controlling the surface wettability electrically. Pure water, saline (0.9%, 5%, 10%), ethanol and silicone oil (1cSt) were prepared as transported liquid and effects of physical properties of the liquid on the droplet transportation were investigated experimentally. The results show that optimal volume of the droplet depends on contact angle of the liquid, and that electrical conductivity, dielectric constant and initial contact angle of the liquid have a great effect on the transport performance.
