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Few layer graphene based superlattices as efficient thermal insulators

Abstract : While graphene and few layer graphene (FLG) are considered as having the highest thermal conductivity in their in-plane directions, our molecular dynamics (MD) simulations however show that those systems are also characterized by a superior thermal contact resistance, which could be largely tuned with the layer number when in contact with a silica substrate. Taking advantages of such a resistive interface, MD simulations show that SiO2/FLG superlattices have a thermal conductivity as low as 0.30W/mK, exhibiting a promising prospect in nano-scale thermal insulation. These findings pave the way for an improved thermal management of nanoscale systems such as thermal barrier coatings and phase change memory materials with atomic-scale super-insulators. VC 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4824013]
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Submitted on : Monday, November 30, 2015 - 10:22:56 AM
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Yuxiang Ni, Yann Chalopin, Sebastian Volz. Few layer graphene based superlattices as efficient thermal insulators. Applied Physics Letters, American Institute of Physics, 2013, ⟨10.1063/1.4824013⟩. ⟨hal-01230134⟩

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