Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Faraday-cage screening reveals intrinsic aspects of the van der Waals
  attraction   General properties of the recently observed screening of the van der Waals
(vdW) attraction between a silica substrate and silica tip by insertion of
graphene are predicted using basic theory and first-principles calculations.
Results are then focused on possible practical applications, as well as an
understanding of the nature of vdW attraction, considering recent discoveries
showing it competing against covalent and ionic bonding. The traditional view
of the vdW attraction as arising from pairwise-additive London dispersion
forces is considered using Grimme's "D3" method, comparing results to those
from Tkatchenko's more general many-body dispersion (MBD) approach, all
interpreted in terms of Dobson's general dispersion framework. Encompassing the
experimental results, MBD screening of the vdW force between two silica
bilayers is shown to scale up to medium separations as 1.25 de/d, where d is
the bilayer separation and de its equilibrium value, depicting antiscreening
approaching and inside de. Means of unifying this correlation effect with those
included in modern density functionals are urgently required.

20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs