Visibility study of graphene multilayer structures

摘要: The visibility of graphene sheets on different types substrates has been investigated both theoretically and experimentally. Although single layer is observable various dielectrics under an optical microscope, it invisible when placed directly most the semiconductor metallic substrates. We show that coating a resist with optimum thickness effective way to enhance contrast makes visible Experiments have performed verify results quartz NiFe-coated Si obtained will be useful for fabricating graphene-based devices electronics, spintronics optoelectronics applications.