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Multiscale models of colloidal dispersion of particles in nematic liquid crystals
T P Bennett1, G D'Alessandro1, K R Daly2
1Mathematical Sciences, University of Southampton, Southampton, England, United Kingdom.
Abstract:
We use homogenization theory to develop a multiscale model of colloidal dispersion of particles in nematic liquid crystals under weak-anchoring conditions. We validate the model by comparing it with simulations by using the Landau-de Gennes free energy and show that the agreement is excellent. We then use the multiscale model to study the effect that particle anisotropy has on the liquid crystal: spherically symmetric particles always reduce the effective elastic constant. Asymmetric particles introduce an effective alignment field that can increase the Fredericks threshold and decrease the switch-off time.
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