title: Strain Relaxation in CVD Graphene: Wrinkling with Shear Lag.
abstract: 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.
authors.affiliation: †Université Grenoble Alpes, F-38000, Grenoble, France.|‡CEA, INAC-SP2M, F-38054, Grenoble, France.
authors.forename: Merijntje S
authors.initials: MS
authors.lastname: Bronsgeest
authors.affiliation: †Université Grenoble Alpes, F-38000, Grenoble, France.|§CNRS, Inst NEEL, F-38042, Grenoble, France.
authors.forename: Nedjma
authors.initials: N
authors.lastname: Bendiab
authors.affiliation: †Université Grenoble Alpes, F-38000, Grenoble, France.|‡CEA, INAC-SP2M, F-38054, Grenoble, France.|§CNRS, Inst NEEL, F-38042, Grenoble, France.
authors.forename: Shashank
authors.initials: S
authors.lastname: Mathur
authors.affiliation: †Université Grenoble Alpes, F-38000, Grenoble, France.|§CNRS, Inst NEEL, F-38042, Grenoble, France.
authors.forename: Amina
authors.initials: A
authors.lastname: Kimouche
authors.affiliation: †Université Grenoble Alpes, F-38000, Grenoble, France.|∥Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, United States.
authors.forename: Harley T
authors.initials: HT
authors.lastname: Johnson
authors.affiliation: †Université Grenoble Alpes, F-38000, Grenoble, France.|§CNRS, Inst NEEL, F-38042, Grenoble, France.
authors.forename: Johann
authors.initials: J
authors.lastname: Coraux
authors.affiliation: †Université Grenoble Alpes, F-38000, Grenoble, France.|‡CEA, INAC-SP2M, F-38054, Grenoble, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Pochet
keywords: Raman spectroscopy; buckling; graphene on cobalt; shear lag; strain relief; uniaxial strain