Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coulomb force mediated heat transfer in the near field - geometric
  effect   It has been shown recently that the Coulomb part of electromagnetic
interactions is more important than transverse propagation waves for the
near-field enhancement of heat transfer between metal objects at a distance of
order nanometers. Here we present a theory focusing solely on the Coulomb
potential between electrons hopping among tight-binding sites. When the
relevant systems are reduced to very small geometry, for example, a single
site, the enhancement is much higher compared to a collection of them packed
within a distance of a few angstroms. We credit this to the screening effect.
This result may be useful in designing metal-based meta-materials to enhance
heat transfer much higher.

2
The categories of this paper are: math
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg