Optofluidic tunable liquid prisms

A liquid prism is a popularly studied optofluidic device driven by electrowetting-on-dielectric (EWOD). Such a microfluidic technology allows a high degree of the tunability for optical control without any mechanical input. In this paper, we present liquid prisms fabricated with a high-capacitance ion gel dielectric and their potential applications of a tunable Fresnel lens and solar energy collection.