Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wetting in a two-dimensional capped capillary. Part I: Wetting
  temperature and capillary prewetting   In this two-part study we investigate the phase behaviour of a fluid
spatially confined in a semi-infinite rectangular pore formed by three
orthogonal walls and connected to a reservoir maintaining constant values of
pressure and temperature in the fluid. Far from the capping wall this
prototypical two-dimensional system reduces to a one-dimensional slit pore.
However, the broken translational symmetry leads to a wetting behavior
strikingly different from that of a slit pore. Using a realistic model of an
atomic fluid with long-ranged Lennard-Jones fluid-fluid and fluid-substrate
interactions, we present for the first time detailed computations of full phase
diagrams of two-dimensional capped capillaries. Our analysis is based on the
statistical mechanics of fluids, in particular density functional theory. We
show the existence of capillary wetting temperature, which is a property of the
pore, and relatively to the fluid temperature determines whether capillary
condensation is a first-order or a continuous phase transition. We also report
for the first time a first-order capillary wetting transition, which can be
preceded by a first-order capillary prewetting. A full parametric study is
undertaken and we support our findings with exhaustive examples of density
profiles, adsorption and free energy isotherms, as well as full phase diagrams.

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The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci
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The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: alg-geom
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The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: hep-lat