Interface phenomena in multifunctional liquid-crystal ferroelectric-polymer composites

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We propose the development and microscopic characterization of polymer-dispersed liquid crystals (PDLCs) where the electro-optically active material is embedded into a piezo- or pyroelectric host polymer. PDLCs with inactive host polymers have been known for some time as electrically switchable light-valves. With a ferro-, pyro-, and piezoelectric host, new effects arise, coupling different material quantities. For example, the application of a mechanical stress leads to a change in the internal electric field, which in turn changes the effective refractive index of the liquid crystal and hence the optical transmission.