期刊
NANO LETTERS
卷 15, 期 8, 页码 5098-5104出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b01246
关键词
graphene on cobalt; strain relief; buckling; Raman spectroscopy; shear lag; uniaxial strain
类别
资金
- Nanosciences CEA program
- Fulbright fellowship
- LANEF-LABEX
- French National Research Agency, through SUPERGRAPH [ANR-BLANC-SIMI10-LS-100617-12-01]
We measure uniaxial strain fields in the vicinity of edges and wrinkles in graphene prepared by chemical vapor deposition (CVD), by combining microscopy techniques and local vibrational characterization. These strain fields have magnitudes of several tenths of a percent and extend across micrometer distances. The nonlinear shear-lag model remarkably captures these strain fields in terms of the graphene substrate interaction and provides a complete understanding of strain-relieving wrinkles in graphene for any level of graphene substrate coherency.
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