Issue 1, 2013
From the journal:

Nanoscale

Van der Waals interaction-tuned heat transfer in nanostructures

Tao Sun,a   Jianxiang Wang*a  and  Wei Kang*b  

* Corresponding authors

a State Key Laboratory for Turbulence and Complex System, Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China

b HEDPS, Center for Applied Physics and Technology, and College of Engineering, Peking University, Beijing 100871, China
E-mail: jxwang@pku.edu.cn, weikang@pku.edu.cn

Abstract

Interfaces usually impede heat transfer in heterogeneous structures. Recent experiments show that van der Waals (vdW) interactions can significantly enhance thermal conductivity parallel to the interface of a bundle of nanoribbons compared to a single layer of freestanding nanoribbon. In this paper, by simulating heat transfer in nanostructures based on a model of nonlinear one-dimensional lattices interacting via van der Waals interactions, we show that the vdW interface interaction can adjust the thermal conductivity parallel to the interface. The efficiency of the adjustment depends on the intensity of interactions and temperature. The nonlinear dependence of the conductivity on the intensity of interactions agrees well with experimental results for carbon nanotube bundles, multi-walled carbon nanotubes, multi-layer graphene, and nanoribbons.

Graphical abstract: Van der Waals interaction-tuned heat transfer in nanostructures

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Article information

DOI
https://doi.org/10.1039/C2NR32481D
Article type
Communication
Submitted
28 Aug 2012
Accepted
25 Oct 2012
First published
30 Oct 2012

Nanoscale, 2013,5, 128-133

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Van der Waals interaction-tuned heat transfer in nanostructures

T. Sun, J. Wang and W. Kang, Nanoscale, 2013, 5, 128 DOI: 10.1039/C2NR32481D

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