Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Liquid nanofilms. A mechanical model for the disjoining pressure   Liquids in contact with solids are submitted to intermolecular forces making
liquids heterogeneous and, in a mechanical model, the stress tensor is not any
more spherical as in homogeneous bulks. The aim of this article is to show that
a square-gradient functional taking into account the volume liquid free energy
corrected with two surface liquid density functionals is a mean field
approximation allowing to study structures of very thin liquid nanofilms near
plane solid walls. The model determines analytically the concept of disjoining
pressure for liquid films of thicknesses of a very few number of nanometers and
yields a behavior in good agreement with the shapes of experimental curves
carried out by Derjaguin and his successors.

28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph