▎ 摘　　要

In this paper, we report on a microwave characterization of the interface between Ti/Au contacts and chemical vapor deposition graphene using structures of Corbino geometry, with primary focus on extracting and modeling the capacitance associated with the contact region. It is found that with the current contact resistivity, rho(c) similar to 10(-6) Omega cm(2), the contact capacitance, on the order C-c similar to 1 mu F/cm(2), has a negligible effect on microwave transmission through the contact below similar to 100 GHz. Finally, a parallel plate capacitance model for the contact is presented. (C) 2013 AIP Publishing LLC.