Deposition of few-layered graphene in a microcombustor on copper and nickel substrates

Carbon nanomaterials, including few-layered graphene (FLG), were synthesized on high-purity copper and nickel wires in a microchannel within an alumina microcombustor with a methane/oxygen edge flame. The deposition occurred in 20 s with identifiable FLG Raman peaks. The FLG layers were characterized by Raman spectroscopy and scanning electron microscope (SEM) imaging. The data shows 5-8 layers can be formed on the wires in a microchannel. The versatility of the microcombustor platform for rapid deposition of carbon nanomaterials is also shown through demonstrations of formation of near-perfect graphite thin films.