Hierarchically Structured, Double-Periodic Inverse Composite Opals

摘要

A versatile colloidal templating strategy to fabricate hierarchically structured inverse opals is investigated. A sequence of infiltration and pyrolysis steps provides access to a range of material combinations such as SiO_2, Al_2O_3, or TiO_2. The experimental results also document the feasibility of this method to fabricate porous polymer films with a double periodic pore lattice.