Fabrication of TiO2–SiO2 Photonic Crystals with Diamond Structure
Abstract:Ceramic photonic crystals with diamond structure were fabricated using stereolithography and successive sintering. The green body of an epoxy resin incorporating 10 vol% TiO2–SiO2 was formed by stereolithography and then heated in air at 1100°–1400°C for 2 h. The sintered products maintained the diamond structure with a linear shrinkage ratio of about 57% and a porosity of 38%. The ceramic photonic crystal with eight unit cells showed a photonic band gap at the center frequency of 23.5 GHz. This fabrication method of three-dimensional (3D) ceramic photonic crystals is applicable to other 3D structural ceramics and does not require any molding techniques.
Document Type: Research Article
Affiliations: Joining and Welding Research Institute, Osaka University, Osaka 567-0047, Japan
Publication date: June 1, 2005