Wrinkled few-layer graphene as highly efficient load bearer

Abstract

Multilayered graphitic materials are not suitable as load-bearers due to their inherent weak interlayer bonding (for example, graphite is a solid lubricant in certain applications). This situation is largely improved when two-dimensional (2-D) materials such as a monolayer (SLG) graphene are employed. The downside in these cases is the presence of thermally or mechanically induced wrinkles which are ubiquitous in 2-D materials. Here we set out to examine the effect of extensive large wavelength/ amplitude wrinkling on the stress transfer capabilities of exfoliated simply-supported graphene flakes. Contrary to common belief we present clear evidence that this type of "corrugation" enhances the load bearing capacity of few-layer graphene as compared to 'flat' specimens. This effect is the result of the significant increase of the graphene/polymer interfacial shear stress per increment of applied strain due to wrinkling and paves the way for designing affordable graphene composites with highly improved stress-transfer efficiency.

20 pages, 6 figures

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Cited by in corpus (6)

• Tunable macroscale structural superlubricity in two-layer graphene via strain engineering
• Stress-transfer from polymer substrates to monolayer and few-layer graphenes
• Enhancing the Adhesion of Graphene to Polymer Substrates by Controlled Defect Formation
• Large intravalley scattering due to pseudo-magnetic fields in crumpled graphene
• Non-Eulerian behavior of graphitic materials under compression
• Spin-polarized currents in corrugated graphene nanoribbons