Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic line tension of lipid domains in monolayers   We formulate a simple effective model to describe molecular interactions in a
lipid monolayer. The model represents lipid molecules in terms of
two-dimensional anisotropic particles on the plane of the monolayer. These
particles interact through forces that are believed to be relevant for the
understanding of fundamental properties of the monolayer: van der Waals
interactions originating from lipid chain interaction, and dipolar forces
between the dipole groups of the molecular heads. Thermodynamic and phase
behaviour properties of the model are explored using density-functional theory.
Interfacial properties, such as the line tension and the structure of the
region between ordered and disordered coexisting regions, are also calculated.
The line tension turns out to be highly anisotropic, mainly as a result of the
lipid chain tilt, and to a lesser extent of dipolar interactions perpendicular
to the monolayer. The role of the two dipolar components, parallel and
perpendicular to the monolayer, is assessed by comparing with computer
simulation results for lipid monolayers.

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The categories of this paper are: dg-ga
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
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