Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nanothermodynamic description and molecular simulation of a single-phase
  fluid in a slit pore   We describe the thermodynamic state of a highly confined single-phase and
single-component fluid in a slit pore using Hill's thermodynamics of small
systems. This theory was more recently named nanothermodynamics. We start by
constructing an ensemble of slit pores for controlled temperature, volume,
surface area, and chemical potential. We present the integral and differential
properties according to Hill, and use them to define the disjoining pressure.
We identify all thermodynamic pressures by their mechanical counterparts in a
consistent manner, and investigate the identification by molecular dynamics
simulations. We define and compute the disjoining pressure, and show that it
contains the standard definition. We compute the entropy and energy densities,
and find in agreement with the literature, that the forces at the wall are of
an energetic, not entropic nature. The subdivision potential is zero for this
slit pore with large walls, but unequal to zero for related sets of control
variables. We show how Hill's method can be used to find new Maxwell relations
of a confined fluid, in addition to a scaling relation, which applies when the
walls are separated far enough. By this expansion of nanothermodynamics, we set
the stage for further developments of the thermodynamics of confined fluids, a
field that is central in nanotechnology.

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The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio