Abstract

Ferro nematic suspensions are the prominent materials to enhance the electro optical performance of liquid crystal displays. Electro optical properties of polymer dispersed liquid crystal (PDLC) display with the introduction of Barium Titanate nanoparticles have been investigated in this article and it is shown that there is a considerable enhancement in electro-optical response of the displays. The nanoparticles lower the switch-on electric field and thereby increase the optical transmission at certain voltages of the displays. The electro-optical characteristics of the PDLC cells were investigated with a He-Ne laser followed by MatLab calculations.

Highlights

  • Considerable attention has been paid to the fabrication of devices with polymer-liquid crystal composites

  • The electro-optical effect is the basis for many polymer dispersed liquid crystal (PDLC) based applications, owing to their easy processing and flexibility, due to which polymer-liquid crystal (LC) composites have been studied for a wide variety of applications

  • External perturbations affect the alignment of LC molecules, which can influence the electro-optical properties of the displays

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Summary

Introduction

Considerable attention has been paid to the fabrication of devices with polymer-liquid crystal composites. The electro-optical effect is the basis for many PDLC based applications, owing to their easy processing and flexibility, due to which polymer-LC composites have been studied for a wide variety of applications. Some of their possible applications include smart windows, optical shutters, diffractive optics, photorefractive systems, micro-displays, potential nuclear radiation detectors, and flexible displays etc. External perturbations affect the alignment of LC molecules, which can influence the electro-optical properties of the displays. We present evidence for rather large changes in the electrooptical properties of PDLCs containing relatively small concentrations of BaTiO3 NPs

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