Inter-layer and intra-layer heat transfer in bilayer/monolayer graphene van der Waals heterostructure
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2018-06-06
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Language
en
Pages
1-5
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Applied Physics Letters, Volume 112, issue 23
Abstract
Van der Waals heterostructures have exhibited interesting physical properties. In this paper, heat transfer in hybrid coplanar bilayer/monolayer (BL-ML) graphene, as a model layered van der Waals heterostructure, was studied using non-equilibrium molecular dynamics (MD) simulations. The temperature profile and inter- and intra-layer heat fluxes of the BL-ML graphene indicated that, there is no fully developed thermal equilibrium between layers and the drop in the average temperature profile at the step-like BL-ML interface is not attributable to the effect of Kapitza resistance. By increasing the length of the system up to 1 μm in the studied MD simulations, the thermally non-equilibrium region was reduced to a small area near the step-like interface. All MD results were compared to a continuum model and a good match was observed between the two approaches. Our results provide a useful understanding of heat transfer in nano- and micro-scale layered materials and van der Waals heterostructures.Description
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Rajabpour , A , Fan , Z & Vaez Allaei , S M 2018 , ' Inter-layer and intra-layer heat transfer in bilayer/monolayer graphene van der Waals heterostructure : Is there a Kapitza resistance analogous? ' , Applied Physics Letters , vol. 112 , no. 23 , 233104 , pp. 1-5 . https://doi.org/10.1063/1.5025604
