Mechanical Properties of MoS2/Graphene Heterostructures

Abstract

We perform classic molecular dynamics simulations to comparatively investigate the mechanical properties of single-layer MoS2 and a graphene/MoS2/graphene heterostructure under uniaxial tension. We show that the lattice mismatch between MoS2 and graphene will lead to an spontaneous strain energy in the interface. The Young's modulus of MoS2 can be enhanced by a factor of five by sandwiching it between two graphene layers. While the stiffness is enhanced, the yield strain of the MoS2 is reduced due to lateral buckling of the outer graphene layers due to the applied mechanical tension.

arXiv commentAppl. Phys. Lett., published

References in corpus (13)

• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• Atomically thin MoS2: A new direct-gap semiconductor
• Local strain engineering in atomically thin MoS2
• Elastic properties of freely suspended MoS2 nanosheets
• Molecular Dynamics Simulations of Single-Layer Molybdenum Disulphide (MoS2): Stillinger-Weber Parametrization, Mechanical Properties, and Thermal Conductivity
• Control of Radiation Damage in MoS2 by Graphene Encapsulation
• Elastic Bending Modulus of Single-Layer Molybdenum Disulphide (MoS2): Finite Thickness Effect
• The pristine atomic structure of MoS2 monolayer protected from electron radiation damage by graphene
• Band offset and negative compressibility in graphene-MoS2 heterostructures
• Large Current Modulation and Spin-Dependent Tunneling of Vertical Graphene/MoS${}_2$ Heterostructures
• Orientation Dependent Thermal Conductance in Single-Layer MoS2
• Lithium incorporation at the MoS2/graphene interface: an ab initio investigation
• A Surface Stacking Fault Energy Approach to Predicting Defect Nucleation in Surface-Dominated Nanostructures

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• Development of a Transferable Reactive Force Field of P/H Systems: Application to the Chemical and Mechanical Properties of Phosphorene
• Cross-plane enhanced thermoelectricity and phonon suppression in graphene/MoS2 van der Waals heterostructures
• Engineering thermal transport across layered graphene-MoS2 superlattices
• Thermal transport in MoS2/Graphene hybrid nanosheets
• Proximity-induced topological phases in bilayer graphene
• Elastomeric waveguide on-chip coupling of an encapsulated MoS${}_2$ monolayer
• On the Elastic Properties and Fracture Patterns of MoX2 (X = S, Se, Te) Membranes: A Reactive Molecular Dynamics Study
• Misfit strain-induced energy dissipation for graphene/MoS2 heterostructure nanomechanical resonators
• Misfit strain effect on the thermal expansion coefficient of graphene/MoS${}_2$ van der Waals heterostructures