Nanocomposite Polymers for Smart Window Films

75620-The ability to fabricate ¿smart¿ window films that conserve energy and allow efficient daylighting is greatly restricted by the index of refraction of present day polymers and the ability to spatially control their local index of refraction. This problem can be overcome by creating nanocomposite polymers in which the index of refraction is a controllable parameter. By using nanoparticles (size ? 50 nm), nanocomposite polymers can be created with unique properties such as optical clarity, controllable index of refraction, and UV absorptance of incoming solar radiation. Present scientific literature has shown that titania, zirconia, and metal oxide nanoparticles can possess these unique properties when suspended in a polymer matrix. Phase I will use computer modeling to design optimized structures for controllable window films for efficient daylighting, using the unique and special attributes of these nanocomposite polymers. Methods for mass manufacturing the nanocomposite polymers, while maintaining roll-to-roll replication of the required nanostructure, will be identified. Commercial Applications and Other Benefits as described by the awardee: In addition to their use in solar daylighting, these nanocomposite films should find applications for increased light extraction efficiency for LED devices and as anti-reflective films for various types of video displays and display screens.