Recoverable Slippage Mechanism in Multilayer Graphene Leads to Repeatable Energy Dissipation

Xiaoding Wei; Zhaoxu Meng; Luis Ruiz; Wenjie Xia; Changgu Lee; Jeffrey W. Kysar; James C. Hone; Sinan Keten; Horacio D. Espinosa

doi:10.1021/acsnano.5b04939

Recoverable Slippage Mechanism in Multilayer Graphene Leads to Repeatable Energy Dissipation

Xiaoding Wei, Zhaoxu Meng, Luis Ruiz, Wenjie Xia, Changgu Lee, Jeffrey W. Kysar, James C. Hone, Sinan Keten^*, Horacio D. Espinosa

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

132 Scopus citations

Abstract

Understanding the deformation mechanisms in multilayer graphene (MLG), an attractive material used in nanodevices as well as in the reinforcement of nanocomposites, is critical yet challenging due to difficulties in experimental characterization and the spatiotemporal limitations of atomistic modeling. In this study, we combine nanomechanical experiments with coarse-grained molecular dynamics (CG-MD) simulations to elucidate the mechanisms of deformation and failure of MLG sheets. Elastic properties of graphene sheets with one to three layers are measured using film deflection tests. A nonlinear behavior in the force vs deflection curves for MLGs is observed in both experiments and simulations: During loading/unloading cycles, MLGs dissipate energy through a "recoverable slippage" mechanism. The CG-MD simulations further reveal an atomic level interlayer slippage process and suggest that the dissipated energy scales with film perimeter. Moreover, our study demonstrates that the finite shear strength between individual layers could explain the experimentally measured size-dependent strength with thickness scaling in MLG sheets.

Original language	English (US)
Pages (from-to)	1820-1828
Number of pages	9
Journal	ACS nano
Volume	10
Issue number	2
DOIs	https://doi.org/10.1021/acsnano.5b04939
State	Published - Feb 23 2016

Funding

The authors acknowledge support from NSF through DMREF Award CMMI-1235480, and through Grant CMMI-1437450, and the ARO through MURI Award W911NF-08-1-0541. In addition, the authors thank support from the Department of Civil & Environmental Engineering and Mechanical Engineering at Northwestern University. A supercomputing grant from Quest HPC System at Northwestern University is also acknowledged. C.L. acknowledges the Basic Science Research Program (2009-0083540) funded by the Korean Government Ministry of Science, ICT and Future Planning.

Keywords

energy dissipation
graphene
slippage
stacking nonlinearity
strength

ASJC Scopus subject areas

General Materials Science
General Engineering
General Physics and Astronomy

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title = "Recoverable Slippage Mechanism in Multilayer Graphene Leads to Repeatable Energy Dissipation",

abstract = "Understanding the deformation mechanisms in multilayer graphene (MLG), an attractive material used in nanodevices as well as in the reinforcement of nanocomposites, is critical yet challenging due to difficulties in experimental characterization and the spatiotemporal limitations of atomistic modeling. In this study, we combine nanomechanical experiments with coarse-grained molecular dynamics (CG-MD) simulations to elucidate the mechanisms of deformation and failure of MLG sheets. Elastic properties of graphene sheets with one to three layers are measured using film deflection tests. A nonlinear behavior in the force vs deflection curves for MLGs is observed in both experiments and simulations: During loading/unloading cycles, MLGs dissipate energy through a {"}recoverable slippage{"} mechanism. The CG-MD simulations further reveal an atomic level interlayer slippage process and suggest that the dissipated energy scales with film perimeter. Moreover, our study demonstrates that the finite shear strength between individual layers could explain the experimentally measured size-dependent strength with thickness scaling in MLG sheets.",

keywords = "energy dissipation, graphene, slippage, stacking nonlinearity, strength",

author = "Xiaoding Wei and Zhaoxu Meng and Luis Ruiz and Wenjie Xia and Changgu Lee and Kysar, \{Jeffrey W.\} and Hone, \{James C.\} and Sinan Keten and Espinosa, \{Horacio D.\}",

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AU - Ruiz, Luis

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AU - Lee, Changgu

AU - Kysar, Jeffrey W.

AU - Hone, James C.

AU - Keten, Sinan

AU - Espinosa, Horacio D.

PY - 2016/2/23

Y1 - 2016/2/23

N2 - Understanding the deformation mechanisms in multilayer graphene (MLG), an attractive material used in nanodevices as well as in the reinforcement of nanocomposites, is critical yet challenging due to difficulties in experimental characterization and the spatiotemporal limitations of atomistic modeling. In this study, we combine nanomechanical experiments with coarse-grained molecular dynamics (CG-MD) simulations to elucidate the mechanisms of deformation and failure of MLG sheets. Elastic properties of graphene sheets with one to three layers are measured using film deflection tests. A nonlinear behavior in the force vs deflection curves for MLGs is observed in both experiments and simulations: During loading/unloading cycles, MLGs dissipate energy through a "recoverable slippage" mechanism. The CG-MD simulations further reveal an atomic level interlayer slippage process and suggest that the dissipated energy scales with film perimeter. Moreover, our study demonstrates that the finite shear strength between individual layers could explain the experimentally measured size-dependent strength with thickness scaling in MLG sheets.

AB - Understanding the deformation mechanisms in multilayer graphene (MLG), an attractive material used in nanodevices as well as in the reinforcement of nanocomposites, is critical yet challenging due to difficulties in experimental characterization and the spatiotemporal limitations of atomistic modeling. In this study, we combine nanomechanical experiments with coarse-grained molecular dynamics (CG-MD) simulations to elucidate the mechanisms of deformation and failure of MLG sheets. Elastic properties of graphene sheets with one to three layers are measured using film deflection tests. A nonlinear behavior in the force vs deflection curves for MLGs is observed in both experiments and simulations: During loading/unloading cycles, MLGs dissipate energy through a "recoverable slippage" mechanism. The CG-MD simulations further reveal an atomic level interlayer slippage process and suggest that the dissipated energy scales with film perimeter. Moreover, our study demonstrates that the finite shear strength between individual layers could explain the experimentally measured size-dependent strength with thickness scaling in MLG sheets.

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Recoverable Slippage Mechanism in Multilayer Graphene Leads to Repeatable Energy Dissipation

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