Augmentation in Frequency Modulation properties of PDLCs by addition of Ferroelectric Nanoparticles

Polymer dispersed liquid crystals (PDLCs) are widely investigated by researchers due to their potential applications like displays and energy harvesting devices. We have investigated the effect of BaTiO3 nanoparticle concentration on the frequency modulation properties of PDLCs. Initially, as the nanoparticle concentration increases, the required frequency for transmission modulation decreases. On further increasing nanoparticle concentration, the needed modulation frequency increases. For LC-based devices, the frequency modulation properties are usually explained by the variation of dielectric constant. The required frequency for modulation of properties shows a decrement in value from nearly 1 MHz (for pure sample) to 500 kHz (for 0.4 wt% BaTiO3 doped). Consequently, the BaTiO3 doped PDLC films are more suitable in optical modulators and PDLC hybrid electroluminescence for flexible electronic devices.