High-temperature annealing and pre-annealing lift-off procedures are employed to improve the solutionprocessibletechnique for the fabrication of one-(1D) and two-dimensional (2D) metallic photonic crystals(MPCs) based on colloidal gold nanoparticles.This enables the successful fabrication of gold nanowiresor nanocylinder array structures with the photoresist template removed completely,which is crucial forthe application of MPCs in biosensors and optoelectronic devices.Microscopic measurements show homogeneous1D and 2D photonic structures with an area as large as 100 mm^2.Plasmonic resonance of thegold nanostructures and its coupling with the resonance mode of the planar waveguide underneath thephotonic structures are observed,implying the excellent optical properties of this kind of MPCs based onthe improved fabrication technique.
