2004 / DB reference year
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Author Kanehira, Shingo; Kirihara, Soshu; Miyamoto, Yoshinari; Sakoda, Kazuaki; Takeda, Mitsuo Wada ; Joining/Welding Research Institute, Osaka University, Ibaraki, Osaka 567-0047, Japan
Source J Am Ceram Soc v 86 Issue:n 10 October 2003 p 1691-1694
Abstract Photonic crystals with a diamond structure of epoxy lattices in which TiO2-based ceramic particles are dispersed were fabricated by stereolithography. The periodicity of the lattice was designed to reflect electromagnetic waves in the gigahertz range. The volume fraction (β) of the dielectric lattice medium was modified from 14% to 33% by changing the rod diameter of the lattice. The photonic band gap was observed along Γ-L [111] , Γ-X [100] , and Γ-K [110] directions and the complete photonic band gap was formed at over β= 20%. The width of the forbidden gap increased gradually when the β increased over 14%, and reached 2.4 GHz at β= 33%. These results agreed with the band calculation using the plane wave expansion method. [References: 9] (Auth abstract) XX