Figure 1
From: High-speed roll-to-roll manufacturing of graphene using a concentric tube CVD reactor
Concentric tube CVD (CTCVD) system configured for R2R graphene growth on Cu foil. a) System schematic showing the helical feed path (left to right), sequential treatment zones and internal gas injection holes. b) Cross-section view of the concentric tube arrangement. c) Bench-scale prototype of the CTCVD system (setup where processing is right to left), with rails for alignment with tube furnace. d) Close-up of e), showing the gas injection holes used to supply the hydrocarbon gas to the downstream treatment zone. e) Top view of a Cu foil substrate wrapped through the system.
