Exceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures

Abstract Graphene based van der Waals heterostructures (vdWHs) have gained substantial interest recently due to their unique electrical and optical characteristics as well as unprecedented opportunities to explore new physics and revolutionary design of nanodevices. However, the heat conduction perf...

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Autores principales:	Md. Sherajul Islam, Imon Mia, Shihab Ahammed, Catherine Stampfl, Jeongwon Park
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9b2305bbb1ff42ee81d55205e95084bc
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spelling	oai:doaj.org-article:9b2305bbb1ff42ee81d55205e95084bc2021-12-02T12:42:19ZExceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures10.1038/s41598-020-78472-22045-2322https://doaj.org/article/9b2305bbb1ff42ee81d55205e95084bc2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78472-2https://doaj.org/toc/2045-2322Abstract Graphene based van der Waals heterostructures (vdWHs) have gained substantial interest recently due to their unique electrical and optical characteristics as well as unprecedented opportunities to explore new physics and revolutionary design of nanodevices. However, the heat conduction performance of these vdWHs holds a crucial role in deciding their functional efficiency. In-plane and out-of-plane thermal conduction phenomena in graphene/2D-SiC vdWHs were studied using reverse non-equilibrium molecular dynamics simulations and the transient pump-probe technique, respectively. At room temperature, we determined an in-plane thermal conductivity of ~ 1452 W/m-K for an infinite length graphene/2D-SiC vdWH, which is superior to any graphene based vdWHs reported yet. The out-of-plane thermal resistance of graphene → 2D-SiC and 2D-SiC → graphene was estimated to be 2.71 × 10−7 km2/W and 2.65 × 10−7 km2/W, respectively, implying the absence of the thermal rectification effect in the heterobilayer. The phonon-mediated both in-plane and out-of-plane heat transfer is clarified for this prospective heterobilayer. This study furthermore explored the impact of various interatomic potentials on the thermal conductivity of the heterobilayer. These findings are useful in explaining the heat conduction at the interfaces in graphene/2D-SiC vdWH and may provide a guideline for efficient design and regulation of their thermal characteristics.Md. Sherajul IslamImon MiaShihab AhammedCatherine StampflJeongwon ParkNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-16 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Md. Sherajul Islam Imon Mia Shihab Ahammed Catherine Stampfl Jeongwon Park Exceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures
description	Abstract Graphene based van der Waals heterostructures (vdWHs) have gained substantial interest recently due to their unique electrical and optical characteristics as well as unprecedented opportunities to explore new physics and revolutionary design of nanodevices. However, the heat conduction performance of these vdWHs holds a crucial role in deciding their functional efficiency. In-plane and out-of-plane thermal conduction phenomena in graphene/2D-SiC vdWHs were studied using reverse non-equilibrium molecular dynamics simulations and the transient pump-probe technique, respectively. At room temperature, we determined an in-plane thermal conductivity of ~ 1452 W/m-K for an infinite length graphene/2D-SiC vdWH, which is superior to any graphene based vdWHs reported yet. The out-of-plane thermal resistance of graphene → 2D-SiC and 2D-SiC → graphene was estimated to be 2.71 × 10−7 km2/W and 2.65 × 10−7 km2/W, respectively, implying the absence of the thermal rectification effect in the heterobilayer. The phonon-mediated both in-plane and out-of-plane heat transfer is clarified for this prospective heterobilayer. This study furthermore explored the impact of various interatomic potentials on the thermal conductivity of the heterobilayer. These findings are useful in explaining the heat conduction at the interfaces in graphene/2D-SiC vdWH and may provide a guideline for efficient design and regulation of their thermal characteristics.
format	article
author	Md. Sherajul Islam Imon Mia Shihab Ahammed Catherine Stampfl Jeongwon Park
author_facet	Md. Sherajul Islam Imon Mia Shihab Ahammed Catherine Stampfl Jeongwon Park
author_sort	Md. Sherajul Islam
title	Exceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures
title_short	Exceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures
title_full	Exceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures
title_fullStr	Exceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures
title_full_unstemmed	Exceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures
title_sort	exceptional in-plane and interfacial thermal transport in graphene/2d-sic van der waals heterostructures
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/9b2305bbb1ff42ee81d55205e95084bc
work_keys_str_mv	AT mdsherajulislam exceptionalinplaneandinterfacialthermaltransportingraphene2dsicvanderwaalsheterostructures AT imonmia exceptionalinplaneandinterfacialthermaltransportingraphene2dsicvanderwaalsheterostructures AT shihabahammed exceptionalinplaneandinterfacialthermaltransportingraphene2dsicvanderwaalsheterostructures AT catherinestampfl exceptionalinplaneandinterfacialthermaltransportingraphene2dsicvanderwaalsheterostructures AT jeongwonpark exceptionalinplaneandinterfacialthermaltransportingraphene2dsicvanderwaalsheterostructures
_version_	1718393700592123904

Exceptional in-plane and interfacial thermal transport in graphene/2D-SiC van der Waals heterostructures

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