| Budget Amount *help |
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2012: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
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| Outline of Final Research Achievements |
The four-coordinated random network structure (PAD structure) with a photonic band gap (PBG), which we recently discovered, was fabricated with the size of a terahertz frequency region. First, the structure was fabricated by a laser beam lighography using acrylic resin containing alumina particles. Then, it was dewaxed at 600℃ and sintered at 1500℃. By these procedures, we finally obtained the PAD structure of alumina rods.
For the purpose of clarifying the formation mechanism of PBG in PAD, we constructed five- and six-coordinated random network structures on computer, and investigated numerically the PBG formations in them. No clear PBG formations were observed in these structures, indicating that the four-coordination in PAD plays an essential role in the PBG formation in PAD.
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