Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The interplay between screening properties and colloid anisotropy:
  towards a reliable pair potential for disc-like charged particles   The electrostatic potential of a highly charged disc (clay platelet) in an
electrolyte is investigated in detail. The corresponding non-linear
Poisson-Boltzmann (PB) equation is solved numerically, and we show that the
far-field behaviour (relevant for colloidal interactions in dilute suspensions)
is exactly that obtained within linearized PB theory, with the surface boundary
condition of a uniform potential. The latter linear problem is solved by a new
semi-analytical procedure and both the potential amplitude (quantified by an
effective charge) and potential anisotropy coincide closely within PB and
linearized PB, provided the disc bare charge is high enough. This anisotropy
remains at all scales; it is encoded in a function that may vary over several
orders of magnitude depending on the azimuthal angle under which the disc is
seen. The results allow to construct a pair potential for discs interaction,
that is strongly orientation dependent.

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The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin