in homogeneous hybrid solutions by controlling the mole ratio of titanium butoxide/hydroxyl groups. The well-dispersed nanocrystalline-titania was demonstrated by XRD and TEM measurements. The flexiblehybrid films with good surface planarity, thermaldimensionalstability, tunable refractiveindex (1.63–1.80 at 633 nm), and high optical transparency were successfully obtained and further utilized to