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

Abstract

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.