Figure 1
From: Large Suspended Monolayer and Bilayer Graphene Membranes with Diameter up to 750 µm

CVD Graphene transferring proccess. The schematic of the transferring procedure for fabricating large suspended graphene membranes. Suspended CVD graphene was fabricated using typical procedures, including polymethyl methacrylate (PMMA) spin-coating, backside graphene etching, copper foil etching, rinsing, and wet-transfer onto a perforated SiO2/Si substrate. After the PMMA/graphene membrane was thoroughly dried, PMMA was removed using the Inverted Floating Method.