The surface orienting effect of rubbed teflon nanolayers on the morphology and electro-optical(EO) response of polymer-dispersed liquid crystal (PDLC) single layers of large nematic dropletswas studied experimentally. In PDLC composites of the nematic liquid crystal (LC) E7 andNOA65 polymer, single droplets of LC with diameters as larger as 10 lm were confined in layerswith a thickness of 10 lm, and the nematic director field was efficiently modified bynanostructuring teflon rubbing of the glass plates of the PDLC cell. For layered PDLCs arrangedand oriented in this way, the modulated EO response by the dielectric oscillations of the nematicdirector exhibits a selective amplitude-frequency modulation controllable by both temperature andvoltage applied, and is simply related to the LC droplet size. That may be of practical interest forPDLC-based modulators operating in the infrasound frequency range.
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|Titolo:||Electro-optical response of polymer-dispersed liquid crystal single layers of large nematic droplets oriented by rubbed teflon nanolayers|
|Data di pubblicazione:||2013|
|Appare nelle tipologie:||1.1 Articolo in rivista|