Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enforced freedom: electric-field-induced declustering of ionic-liquid
  ions in the double layer   Whereas the majority of ions in the bulk of a solvent-free ionic liquid is
bound into clusters, this is expected to change in the electrical double layer
(EDL), in which the resulting electric field 'prefers' to interact with
electrical monopoles-free, unclustered ions. The competition between the
propensity of ions to stay in a clustered state and the reduction of the energy
of ions in electric field in the free state determines the resulting portion of
free ions in the EDL. We present a study of this effect, based on the simplest
possible mean-field theory. 'Cracking' of ion clusters into individual ions in
electric field is accompanied by the change of the dielectric response of ionic
liquid which is different in clustered and unclustered states. The predictions
of the theory are verified and further explored by specially performed
molecular dynamics simulations. A particular finding of the theory is that the
differential capacitance vs potential curve displays a bell shape despite low
concentration of free charge carriers, because the dielectric response of bound
ions reduces the threshold concentration of the bell- to camel-shape
transition. Whereas qualitatively these findings make perfect sense, in reality
the exact numbers and criteria might be different as the presented simple
theory does not take into account overscreening and oscillating charge and
electrostatic potential distributions near the electrode. This is why testing
the theory with computer simulations is essential, but the latter basically
reproduce the qualitative conclusions of the theory.

4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th