Selective amplitude-frequency electro-optical modulation by polymer-dispersed liquid crystal films aligned by teflon nanolayers

Abstract:

We report the amplitude-frequency electro-optical (EO) modulation by a specific type of polymer-dispersed liquid crystal (PDLC) composites - planar single layers of large nematic microdroplets aligned by teflon nanolayers. Such a surface modifying PDLC system exhibits a selective modulated 2nd harmonic EO response by the dielectric oscillations of the nematic director. The bandlike behavioural characteristic of the amplitude-frequency modulation of light, achieved by the single-layered PDLC films, can be tuned by AC voltage applied on the PDLC cell. This property can be applied to tunable EO modulators operating in the infrasound frequency range.

Año de publicación:

2013

Keywords:

• Single layers
• Electro-optical properties
• PDLC films
• Polymer dispersed liquid crystal (PDLC)
• Amplitude-frequency modulation

Fuente:

scopus