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Asymmetric Junctions Boost in-Plane Thermal Transport in Pillared Graphene
Navid Sakhavand1, Rouzbeh Shahsavari1
1Department of Civil and Environmental Engineering, ‡Department of Material Science and NanoEngineering, and §Smalley Institute for Nanoscale Science and Technology, Rice University , Houston, Texas 77005, United States.
Abstract:
Hybrid 3D nanoarchitectures by covalent connection of 1D and 2D nanomaterials are currently in high demands to overcome the intrinsic anisotropy of the parent materials. This letter reports the junction configuration-mediated thermal transport properties of Pillared Graphene (PGN) using reverse nonequilibrium molecular dynamics simulations. The asymmetric junctions can offer ∼20% improved in-plane thermal transport in PGN, unlike the intuition that their wrinkled graphene sheets cause phonon scattering. This asymmetric trait, which entails lower phonon scattering provides a new degree of freedom to boost thermal properties of PGN and potentially other hybrid nanostructures.
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