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Study of the electro-optical response of polymer dispersed liquid crystal doped with multi-wall carbon nanotubes

We have experimentally investigated for the first time the electro-optical response of polymer dispersed liquid crystals (PDLC) doped with multi-wall carbon nanotubes (MWCNT). Undoped PDLC and PDLC doped with MWCNT were studied. Principal transmittances of the films and angular distributions of scattered light were measured as the functions of applied voltage. Anomalous electro-optical response of PDLC doped with MWCN was observed with cross-polarized light. Carbon nanotubes influence on the droplet director orientation in PDLC was found. The obtained results are discussed in terms of the model which takes into account the partial orientation of liquid crystal droplets in PVA matrix together with the presence of carbon nanotubes.