Transfer-free electrical insulation of epitaxial graphene from its metal substrate.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 22871144.
- Also identified by DOI 10.1021/nl301614j.
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Abstract
High-quality, large-area epitaxial graphene can be grown on metal surfaces, but its transport properties cannot be exploited because the electrical conduction is dominated by the substrate. Here we insulate epitaxial graphene on Ru(0001) by a stepwise intercalation of silicon and oxygen, and the eventual formation of a SiO(2) layer between the graphene and the metal. We follow the reaction steps by X-ray photoemission spectroscopy and demonstrate the electrical insulation using a nanoscale multipoint probe technique.
Medical subject headings
- Crystallization
- Graphite
- Metal Nanoparticles
- Rubidium
- Silicon Dioxide