High resolution imaging of few-layer graphene by Near-Field Scanning Microwave Microscopy

Abstract

In this work, we describe the application of an in-house system performing simultaneously Scanning Tunneling Microscopy (STM) and wide-band Near Field Scanning Microwave Microscopy (wide-band SMM) to a few-layer graphene sample. This sample is produced by mechanical exfoliation of bulk highly oriented graphite and deposited on a substrate of conductive glass. By introducing the time-domain conversion of frequency domain data, we show that it is possible to achieve nanometric resolution.