Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structural properties and liquid spinodal of water confined in a
  hydrophobic environment   We present the results of a computer simulation study of thermodynamical
properties of TIP4P water confined in a hydrophobic disordered matrix of soft
spheres upon supercooling. The hydrogen bond network of water appears preserved
in this hydrophobic confinement. Nonetheless a reduction in the average number
of hydrogen bonds due to the geometrical constraints is observed. The liquid
branch of the spinodal line is calculated from 350 K down to 210 K. The same
thermodynamic scenario of the bulk is found: the spinodal curve is
monotonically decreasing. The line of maximum density bends avoiding a crossing
of the spinodal. There is however a shift both of the line of maximum density
and of the spinodal toward higher pressures and lower temperatures with respect
to bulk.

14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ