▎ 摘　　要

Graphene is a very promising candidate for applications in flexible electronics due to its high carrier mobility and mechanical flexibility. In this paper, we present results on graphene RF devices fabricated on polyimide substrates with cutoff frequencies as high as 10GHz. Excellent channel mobility and current saturation are observed in graphene long channel devices on polyimide. Graphene devices on polyimide also show very good temperature stability from 4.4K to 400K and excellent mechanical flexibility up to a bending radius of 1mm. These demonstrated properties make graphene an excellent candidate for flexible wireless applications. (C) 2013 AIP Publishing LLC.