Bragg Reflectors: Flexible Distributed Bragg Reflectors from Nanocolumnar Templates (Advanced Optical Materials 2/2015)

A. R. González-Elipe, H. Míguez, and co-workers demonstrate a self-standing and flexible structure with high mechanical stability and photonic crystal properties. On page 171, such structures are obtained by polymer infiltration and subsequent lift-off of a film made by oblique angle physical vapor deposition of alternate layers of columnar SiO2 and TiO2 deposited onto TiO2 nanoparticles.