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다차원탄소재료연구단
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Probing elastic properties of graphene and heat conduction in graphene bubbles above 1000 °C

DC Field Value Language
dc.contributor.authorBacsa, Wolfgang-
dc.contributor.authorTopin, Frédéric-
dc.contributor.authorMiscevic, Marc-
dc.contributor.authorHill, James M.-
dc.contributor.authorHuang, Yuan-
dc.contributor.authorRuoff, Rodney S.-
dc.date.accessioned2023-09-22T00:12:28Z-
dc.date.available2023-09-22T00:12:28Z-
dc.date.created2023-06-20-
dc.date.issued2023-05-
dc.identifier.issn2469-9950-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/13961-
dc.description.abstractThe elastic and thermal properties of graphene were investigated by illuminating graphen bubbles with a laser spot. Tempertures above 1000°C were obtained in large (>10μm) graphene bubbles. The formation of standing optical waves lead to laser heating depending on the height of the garphene bubble, which results in Raman band oscillations when scanning the laser spot across the bubble. The profile of the bubble under laser illumination can be deduced from the Raman G band oscillations. A distinct swelling at the center of the bubble is observed which is attributed to the strong softening of graphene above 1000°C. From the size and height of the swelling it is deduced that the elastic modulus is reduced by at least 40% at 1000°C. On solving the heat equation for the heat dissipation through the graphene only, analytical expressions are obtained for the isotherms on the bubble for both symmetrical and asymmetrical positions of the laser spot. It was found that a large fraction of the absorbed heat dissipates through the gas in the bubble using the finite volume method. Analytical expressions for the temperature distribution in the bubble are deduced from the numerical results. Heat conduction through the gas in the bubble influences the temperature distribution and needs to be taken into account in the heat dissipation in graphene bubbles. © 2023 American Physical Society.-
dc.language영어-
dc.publisherAmerican Physical Society-
dc.titleProbing elastic properties of graphene and heat conduction in graphene bubbles above 1000 °C-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid001003891500005-
dc.identifier.scopusid2-s2.0-85161151400-
dc.identifier.rimsid80980-
dc.contributor.affiliatedAuthorRuoff, Rodney S.-
dc.identifier.doi10.1103/PhysRevB.107.195433-
dc.identifier.bibliographicCitationPhysical Review B, v.107, no.19-
dc.relation.isPartOfPhysical Review B-
dc.citation.titlePhysical Review B-
dc.citation.volume107-
dc.citation.number19-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaMaterials Science-
dc.relation.journalResearchAreaPhysics-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryPhysics, Applied-
dc.relation.journalWebOfScienceCategoryPhysics, Condensed Matter-
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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