Organic solvent vapor sensing using porous photopolymer photonic bandgap structures

2005 ◽  
Author(s):  
Vincent K. S. Hsiao ◽  
William D. Kirkey ◽  
Alexander N. Cartwright ◽  
Paras N. Prasad ◽  
Pamela F. Lloyd ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Photonic Bandgap ◽  
Solvent Vapor ◽  
Vapor Sensing ◽  
Photonic Bandgap Structures

Development of 3D Ceramic Photonic Bandgap Structures

2007 ◽  
Vol 280-283 ◽  
pp. 533-536
Author(s):  
Hai Qing Yin ◽  
Soshu Kirihara ◽  
Yoshinari Miyamoto
Keyword(s):  
Band Gap ◽  
Photonic Bandgap ◽  
Photonic Band Gap ◽  
Three Dimensional ◽  
Cold Isostatic Pressing ◽  
Tio2 Powder ◽  
Lower Range ◽  
Photonic Band Gap Material ◽  
Photonic Bandgap Structures ◽  
Photonic Band

The three-dimensional (3D) photonic band gap material is a material that there exists a full photonic band gap in which waves are forbidden to propagate whatever the polarization or the direction of propagation. In order to obtain photonic bandgap in lower range, we focus on the fabrication of PBG materials of diamond structure with TiO2 powder mixed with SiO2. The inverse epoxy structure with periodic diamond lattices in millimeter order has been fabricated by stereolithographic rapid prototyping. TiO2 slurry was filled into the epoxy structure and then cold isostatic pressing was applied. After sintering at 700K for 5hrs, the epoxy was burnt out and the designed structure was maintained perfectly. The calculated band diagram shows that there exists an absolute photonic band gap for all wave vectors. The measurement of transmission from 10 to 20 GHz in <100> direction shows that a complete band gap is formed at about 14.7-18.5 GHz. The magnitude of the maximum attenuation is as large as 30 dB at 17 GHz.

Influence of a metallic enclosure on the S-parameters of microstrip photonic bandgap structures

2002 ◽  
Vol 44 (2) ◽  
pp. 324-328 ◽  
Author(s):  
Zhengwei Du ◽  
Ke Gong ◽  
J.S. Fu ◽  
Baoxin Gao ◽  
Zhenghe Feng
Keyword(s):  
Photonic Bandgap ◽  
S Parameters ◽  
Photonic Bandgap Structures
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