Electrically Controlled Spectral Properties of Polymer-Dispersed Liquid Crystals Tailored to Privacy Windows Applications

Abstract: Polymer-Dispersed Liquid Crystals (PDLC) respond to electric fields, which allows for switching between opaque and transparent states of the PDLC film. As a rule, the reported electro-optical properties of polymer-dispersed liquid crystals were obtained using a monochromatic light source (typically, a laser). From perspectives of privacy windows applications, it is important to study the dependence of basic parameters (contrast ratio, transmittance, and the switching curves) on the wavelength of light.. This paper reports electrically controlled spectral properties of PDLC films. The experimental results obtained can be used to improve the performance of privacy windows made of polymer-dispersed liquid crystals.