Semicrystalline woodpile photonic crystals without complicated alignment via soft lithography
Park, Joong Mok
We report the fabrication and characterization of woodpile photonic crystals with up to 12 layers through titania nanoparticle infiltration of a polymer template made by soft lithography. Because the complicated alignment in the conventional layer-by-layer fabrication associated with diamondlike symmetry is replaced by a simple 90° alignment, the fabricatedphotonic crystal has semicrystalline phase. However, the crystal performs similarly to a perfectly aligned crystal for the light propagation integrated from the surface normal to 30° at the main photonic band gap.
The following article appeared in Applied Physics Letters 96 (2010): 193303 and may be found at http://dx.doi.org/10.1063/1.3425756.