Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermal rectification in three-dimensional mass-graded anharmonic
  oscillator lattices   In this work we study the thermal rectification efficiency, i.e., asymmetric
heat flow, of a three-dimensional mass-graded anharmonic lattice of length $N$
and width $W$ by means of nonequilibrium molecular dynamics simulations. The
obtained rectification, which is of the same order of magnitude as that of the
corresponding one-dimensional lattice, saturates at low values of the aspect
ratio $W/N$, consistent with the already known behavior of the corresponding
heat fluxes of the homogeneous system under analogous conditions. The maximum
rectification is obtained in the temperature range wherein no rectification
could be obtained in other one-dimensional systems, as well as in the
corresponding one-dimensional instance of the model studied herein.

1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
16
The categories of this paper are: stat
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an