Abstract

Polymer Dispersed Liquid Crystals (PDLCs) are materials that combine liquid crystals with a polymer matrix. PDLCs are known for having unique optical properties and are often used in applications such as smart windows, displays and optical devices. Liquid crystals are substances that can flow like liquid but have an ordered structure like a solid. However, what is useful is that PDLCs can change orientation when exposed to an electric field. In the absence of an electric field the liquid crystals are randomly oriented within the polymer matrix which causes light to scatter making the PDLC appear opaque or frosted. When an electric field is applied across the PDLC, the liquid crystals realign along the direction of the electric field. This phenomenon reduces light scattering, allowing more light to get through the material making the PDLC appear clear or transparent.