Self-Regulation of Infrared Using a Liquid Crystal Mixture Doped with Push–Pull Azobenzene for Energy-Saving Smart Windows
Seung‐Won Oh, Seungmin Nam, Sang‐Hyeok Kim, Tae‐Hoon Yoon, Wook Sung Kim
Abstract
A self-regulating liquid crystal (LC) smart window whose reflectance changes with ambient conditions is demonstrated. Thermally or optically induced switching between the transparent state and a near-infrared (NIR) reflective state can be used for energy-saving windows. Reflection of NIR can reduce the energy used for cooling, while remaining transparent to visible light. By changing the initial alignment of LCs, the window can be switched between hazy-opaque and IR-reflective states to be used for privacy windows.
Topics & Concepts
Materials scienceOpacityOptoelectronicsInfraredLiquid crystalAzobenzeneReflection (computer programming)DopingOpticsWindow (computing)Energy (signal processing)Computer scienceComposite materialPolymerPhysicsOperating systemProgramming languageMathematicsStatisticsAdvanced Materials and MechanicsLiquid Crystal Research AdvancementsAdvanced Sensor and Energy Harvesting Materials