Highly Deformable Graphene Kirigami

Abstract

Graphene's exceptional mechanical properties, including its highest-known stiffness (1 TPa) and strength (100 GPa) have been exploited for various structural applications. However, graphene is also known to be quite brittle, with experimentally-measured tensile fracture strains that do not exceed a few percent. In this work, we introduce the notion of graphene kirigami, where concepts that have been used almost exclusively for macroscale structures are applied to dramatically enhance the stretchability of both zigzag and armchair graphene. Specifically, we show using classical molecular dynamics simulations that the yield and fracture strains of graphene can be enhanced by about a factor of three using kirigami as compared to standard monolayer graphene. This enhanced ductility in graphene should open up interesting opportunities not only mechanically, but also in coupling to graphene's electronic behavior.

5 pages, 7 figures

References in corpus (3)

• Electronic structure of graphene hexagonal flake subjected to triaxial stress
• Pseudomagnetic fields in graphene nanobubbles of constrained geometry: A molecular dynamics study
• A molecular simulation analysis of producing monatomic carbon chains by stretching ultranarrow graphene nanoribbons

Cited by in corpus (3)

• Auxetic Nanomaterials: Recent Progress and Future Development
• Kirigami Actuators
• Intrinsic Rippling Enhances Static Non-Reciprocity in Graphene Metamaterials