Theory of Ferroelectric Nanoparticles in Nematic Liquid Crystals
Lena M. Lopatina, Jonathan V. Selinger
TL;DR
This paper develops a statistical mechanics theory to explain how ferroelectric nanoparticles enhance nematic liquid crystal properties, aligning well with experimental observations even with ionic screening.
Contribution
It introduces a theoretical framework for ferroelectric nanoparticle effects in liquid crystals, explaining experimental enhancements.
Findings
Increases the isotropic-nematic transition temperature by about 5 K.
Predicts enhanced liquid-crystal sensitivity to electric fields.
Remains accurate with moderate ionic screening.
Abstract
Recent experiments have reported that ferroelectric nanoparticles have drastic effects on nematic liquid crystals--increasing the isotropic-nematic transition temperature by about 5 K, and greatly increasing the sensitivity to applied electric fields. To understand these effects, we develop a theory for the statistical mechanics of ferroelectric nanoparticles in liquid crystals. This theory predicts the enhancements of liquid-crystal properties, in good agreement with experiments. These predictions apply even when electrostatic interactions are partially screened by moderate concentrations of ions.
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Taxonomy
TopicsLiquid Crystal Research Advancements · Material Dynamics and Properties