Flexible and transferable one dimensional photonic crystals based on polymer infiltrated nanoparticle multilayers

摘要

Herein we present a series of self standing, flexible and transferable one-dimensional photonic crystal obtained through infiltration of a polymer solution in a porous stack prepared by alternating deposition of layers of TiO_2 and SiO_2 nanoparticles. Since the mesostructure is uniformly filled by the polymer, it is possible to lift off the hybrid multilayers using an adequate thermal treatment to obtain a multifunctional material that combines the optical properties of the periodic nanoporous multilayer and the structural and physic-chemical characteristics of the polymer used. The use of these hybrid 1DPCs as flexible interference filters, or as 1DPC to any kind of substrate is demonstrated.