Conformal Liquid-Metal Electrodes for Flexible Graphene Device Interconnects

Abstract

A novel integration technique is demonstrated that combines 2-D graphene with galinstan (eutectic gallium-based alloy) into flexible, compact, and durable devices. This unique combination enables the next-generation electronic devices with miniaturized microfluidic capabilities. Robust performance is exhibited across a wide range of flexure with less than 5.5% resistance change when subjected to repeated deformations as small as a 4-mm radius of curvature. To fully integrate both graphene and liquid metal in a microfluidics platform, robust interconnects are realized for a variety of flexible electronics applications.