Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charged surface in salty water with multivalent ions: Giant inversion of
  charge   Screening of a strongly charged macroion by oppositely charged colloidal
particles, micelles, or short polyelectrolytes is considered. Due to strong
lateral repulsion such multivalent counterions form a strongly correlated
liquid at the surface of the macroion. This liquid provides correlation induced
attraction of multivalent counterions to the macroion surface. As a result even
a moderate concentration of multivalent counterions in the solution inverts the
sign of the net macroion charge. We show that at high concentration of
monovalent salt the absolute value of inverted charge can be larger than the
bare one. This giant inversion of charge can be observed in electrophoresis.

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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
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The categories of this paper are: cs
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an