Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modelling unidirectional liquid spreading on slanted microposts   A lattice Boltzmann algorithm is used to simulate the slow spreading of drops
on a surface patterned with slanted micro-posts. Gibb's pinning of the
interface on the sides or top of the posts leads to unidirectional spreading
over a wide range of contact angles and inclination angles of the posts.
Regimes for spreading in no, one or two directions are identified, and shown to
agree well with a two-dimensional theory proposed in Chu, Xiao and Wang (Nature
Materials, 9, 413). A more detailed numerical analysis of the contact line
shapes allows us to understand deviations from the two dimensional model, and
to identify the shapes of the pinned interfaces.

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The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: econ
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph