Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Distribution of counterions near discretely charged planes and rods   Realistic charged macromolecules are characterized by discrete (rather than
homogeneous) charge distributions. We investigate the effects of surface charge
discretization on the counterion distribution at the level of mean-field theory
using a two-state model. Both planar and cylindrical geometries are considered;
for the latter case, we compare our results to numerical solutions of the full
Poisson-Boltzmann equation. We find that the discretization of the surface
charge can cause enhanced localization of the counterions near the surface; for
charged cylinders, counterion condensation can exceed Oosawa-Manning
condensation.

29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
36
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
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci