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Rodney S. Ruoff
다차원 탄소재료 연구단
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Fracture of polycrystalline graphene membranes by in situ nanoindentation in a scanning electron microscope

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Title
Fracture of polycrystalline graphene membranes by in situ nanoindentation in a scanning electron microscope
Author(s)
Suk, JW; Mancevski, V; Hao, YF; Liechti, KM; Ruoff, RS
Publication Date
2015-10
Journal
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, v.9, no.10, pp.564 - 569
Publisher
WILEY-V C H VERLAG GMBH
Abstract
Failure of polycrystalline graphene grown by chemical vapor deposition was investigated by nanoindentation in a scanning electron microscope. Circular graphene membranes were subject to central point loads using a nanomanipulator combined with an atomic force microscope cantilever as a force sensor. The grain boundaries of the polycrystalline graphene were visualized by Raman spectroscopy coupled with a carbon isotope labeling technique. Graphene membranes without any grain boundary had a failure strength of 45.4 ± 10.4 GPa, compared to 16.4 ± 5.1 GPa for those with grain boundaries when a Young's modulus was assumed to be 1 TPa. © 2015 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim
URI
https://pr.ibs.re.kr/handle/8788114/2292
ISSN
1862-6254
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
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