FIG 1 (IMAGE) Compuscript Ltd Caption Schematic diagram providing an overview of this review. Liquid crystals can be categorized into nematic, smectic, columnar, and cholesteric liquid crystals. Recently, metasurfaces have been integrated with liquid crystals to achieve tunability and this integrated optical platform can be applied to virtual reality (VR), augmented reality (AR), encryption, and sensors. Credit OEA Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.