Graphenes

The change in the thermal conductivity of a multilayer array of carbon nanotubes during its lateral compression

A. V. Savin<sup>ab

a</sup> N.N. Semenov Federal Research Center for Chemical Physics Russian Academy of Sciences, Moscow, Russia
^b Plekhanov Russian State University of Economics, Moscow, Russia

Abstract: Numerical simulation of thermal conductivity across a multilayer array of single-walled carbon nanotubes is carried out. The effect of transverse compression of the array on thermal conductivity has been studied. It is shown that the compression of the array can occur uniformly when all the nanotubes of the array are compressed equally, and it can occur inhomogeneously when a part of the nanotubes is strongly compressed, and the other part is weakly compressed. With homogeneous compression, the thermal conductivity of the array increases, but with inhomogeneous compression, it does not change and may even decrease in case of a large number of layers. This effect is especially pronounced for arrays of nanotubes of small diameter ($D<2$ nm).

Keywords: carbon nanotubes, nanotube arrays, transverse compression, heat conductivity.

Received: 02.11.2021
Revised: 14.11.2021
Accepted: 18.11.2021

DOI: 10.21883/FTT.2022.03.52100.231

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