Project NematoWett – Dynamic wetting phenomena in lattice models for nematic fluids/liquid crystals near switchable…

Basic data

Acronym:
NematoWett
Title:
Dynamic wetting phenomena in lattice models for nematic fluids/liquid crystals near switchable substrate potentials
Duration:
01/12/2019 to 01/12/2022
Abstract / short description:
Using theoretical methods and accompanying simulations, we will investigate liquid crystals near
switchable substrates. Of particular interest is the approach to wetting transitions and switches
between different wetting states.
As a model system, we consider lattice rods with short–range attractions. We have developed and
will further improve classical density functionals for these models as well as formulate a suitable
dynamic density functional theory.
Wetting phase diagrams will be computed for nematically ordered (upright or lying–down) and
smectic (with possible layering transitions) films. Of particular interest will be the dynamics of
smectic layer formation and the switching dynamics between nematic wetting states of different
orientation. In these processes, there is little mass transport involved and thus we expect that a
lattice dynamics akin to Brownian dynamics can describe these well.
Complementary simulations of grand canonical and kinetic Monte Carlo type will be performed to
gauge and validate the theoretical results. Through collaborations with experimental groups the
results on time–dependence of smectic layering and of the switching between nematic wetting
states shall be tested.

Involved staff

Managers

Faculty of Science
University of Tübingen
Institute of Applied Physics (IAP)
Department of Physics, Faculty of Science
Institute of Applied Physics (IAP)
Department of Physics, Faculty of Science

Local organizational units

Institute of Applied Physics (IAP)
Department of Physics
Faculty of Science

Funders

Bonn, Nordrhein-Westfalen, Germany
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