Bottom-up Fabrication of 3D Nonlinear Photonic Crystals

Three dimensional nonlinear photonic crystals are well known candidates for a wide variety of optical applications, but notoriously hard to fabricate in large scale. V. V. Vogler-Neuling et al. combined a bottom-up fabrication technique with barium titanate nanoparticles to achieve large area photonic crystals with up to eight layers.