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Abstract: The
behaviour of chemically anisotropic short rods, popularly known as Janus rods
was studied using Monte Carlo simulation.
The rods were modeled using a four site tangent bead model with repulsive and
attractive ends. Similar systems were studied within the Schweizer group
(Department of Materials Science UIUC) using the RISM integral equation
approach. Microphase separation of these rods was predicted at low
temperatures and certain probable separated structures were suggested. The
motivation was to confirm or refute the proposed microphase separated
structures and to make comparison to the integral equation theory results.
Results show that the aggregate structures may not be as predicted; however,
much longer runs need to confirm this. Data from the MC simulation for the
site averaged radial distribution functions show significant agreement with
the RISM results. In addition, both high density and low density cases show
interesting structures at low and weak potentials. High density cases may be
showing the onset of microphase separation with large aggregations of
attractive and repulsive ends; while, low density cases may be showing local
order liquid crystallinity.
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