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Nature Research, Scientific Reports, 1(5), 2015

DOI: 10.1038/srep11546

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Burning Graphene Layer-by-Layer

Journal article published in 2015 by Victor A. Ermakov ORCID, Andrei V. Alaferdov, Alfredo R. Vaz, Eric Perim ORCID, Pedro A. S. Autreto, Ricardo Paupitz, Douglas S. Galvao, Stanislav A. Moshkalev
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

AbstractGraphene, in single layer or multi-layer forms, holds great promise for future electronics and high-temperature applications. Resistance to oxidation, an important property for high-temperature applications, has not yet been extensively investigated. Controlled thinning of multi-layer graphene (MLG), e.g., by plasma or laser processing is another challenge, since the existing methods produce non-uniform thinning or introduce undesirable defects in the basal plane. We report here that heating to extremely high temperatures (exceeding 2000 K) and controllable layer-by-layer burning (thinning) can be achieved by low-power laser processing of suspended high-quality MLG in air in “cold-wall” reactor configuration. In contrast, localized laser heating of supported samples results in non-uniform graphene burning at much higher rates. Fully atomistic molecular dynamics simulations were also performed to reveal details of oxidation mechanisms leading to uniform layer-by-layer graphene gasification. The extraordinary resistance of MLG to oxidation paves the way to novel high-temperature applications as continuum light source or scaffolding material.