Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermal conductivity decomposition in two-dimensional materials:
  Application to graphene   Two-dimensional materials have unusual phonon structures due to the presence
of flexural (out-of-plane) modes. Although molecular dynamics simulations have
been extensively used to study heat transport in such materials, conventional
formalisms treat the phonon dynamics isotropically. Here, we decompose the
microscopic heat current in atomistic simulations into in-plane and
out-of-plane components, corresponding to the in-plane and out-of-plane phonon
dynamics, respectively. This decomposition allows for direct computation of the
corresponding thermal conductivity components in two-dimensional materials. We
apply this decomposition to study heat transport in suspended graphene, using
both equilibrium and non-equilibrium molecular dynamics simulations. We show
that the flexural component is responsible for about two thirds of the total
thermal conductivity in unstrained graphene, and the acoustic flexural
component is responsible for the logarithmic divergence of the conductivity
when a sufficiently large tensile strain is applied.

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The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: math
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol