Measuring epitaxial graphene nanoribbons with low-frequency alternating current

We have demonstrated the fabrication of both armchair and zigzag epitaxial graphene nanoribbon (GNR) devices on 4H–SiC using a polymer-assisted sublimation growth method. The phenomenon terrace step formation has traditionally introduced risk GNR deformation along sidewalls, but method helps mitigate this risk. Each type 50 nm wide is examined electrically optically (armchair zigzag), with latter being check quality former alternating current to investigate resistance attenuation from frequencies above 100 Hz. Rates are determined for each device, revealing subtle suggested differences between GNRs.