Development of Design and Control Photonic Fractals and Application to Electromagnetic Devices

光子分形设计与控制的发展及其在电磁器件中的应用

基本信息

批准号：
17106010
负责人：
MIYAMOTO Yoshinari
金额：
$ 70.39万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (S)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17106010/
关键词：
Photonic fractal Menger Sponge Localization Terahertz H-type fractal Ceramics Resonance Stereolithography 構造・機能材

项目摘要

We established CAD/CAM process for .Menger sponge (MS) photonic fractals (PHF) and photonic crystals (PHC) with ceramics, metals and resins. Measurement and simulation methods for electromagnetic wave propagations were developed and an empirical equation to predict the localization frequency (LF) was derived. The LF, EM field distribution and quality factor were calculated by FDTD simulation. The selection rule in transmittance, reflectance and 90 degree scattering were derived using group theory. The 90 degree spectrum can determine the LF and quality factor. The LCAO approximation can analyze the scaling phenomena of eigenmode frequencies. The experimental results and FDTD modeling confirmed that the electromagnetic wave resonance is concentrated in the front part of MS structure. It is thought that the self-similar arrangement of dielectrics and air channels can induce multiple resonances and localizations. Terahertz localizations were observed in micro MSs with ceramics and metals. … More The LF in stage 2 metal MSs, agreed with the cut-off frequencies at the second square channels. The localization modes appeared in band gap by inserting an alumina MS in PHC showed 30% increase of quality factor. Potential applications to antennas, filters and sensors in THz were demonstrated by periodical arrangement of MSs. THz localization in 1D Cantor bar PHFs appeared in band gap which extended in the whole structure. The localization in 2D H PHFs existed as well. The resonant frequencies can be controlled by increasing the stage number without increasing the structure dimensions. The international workshop on PHFs was held by inviting 4 collaborators from overseas in 2008. Interesting theoretical approaches accounting for the localization mechanism were proposed and we got deeper insight about the large potential of PHFs in science, engineering and applications. Our study results were provided in 40 papers and 82 presentations or lectures and in the Photonic Fractals Forum with 8 member companies. Less

我们用陶瓷，金属和树脂建立了用于.Menger赞助商（MS）光子分形（PHF）和光子晶体（PHC）的CAD/CAM工艺。开发了电磁波传播的测量和模拟方法，并得出了预测定位频率（LF）的经验方程。通过FDTD模拟计算LF，EM场分布和质量因子。使用组理论得出了传播，反射率和90度散射的选择规则。 90度频谱可以确定LF和质量因子。 LCAO近似可以分析本本征频率的缩放现象。实验结果和FDTD建模证实了电子波谐振集中在MS结构的前部。据认为，营养和空气通道的自相似安排可以引起多种共鸣和局限性。在带有陶瓷和金属的微型MS中观察到了Terahertz的局限性。 …更多的LF在第二阶段金属MS中，同意第二个正方形通道的截止频率。通过在PHC中插入氧化铝MS，出现在带隙中的定位模式显示质量因子增加了30％。通过定期布置MSS证明了对天线，过滤器和传感器的潜在应用。在1D Cantor Bar PHF中的THZ定位出现在整个结构中扩展的带隙中。在2D H PHF中的定位也存在。可以通过增加阶段数而不增加结构维度来控制共振频率。国际PHF的国际研讨会由邀请函于2008年来自海外的4个合作者举行。提出了有关本地化机制的有趣理论方法，我们对PHF在科学，工程和应用中的巨大潜力有了更深入的了解。我们的研究结果在40篇论文和82篇演讲或讲座中提供，以及与8个会员公司的光子分形论坛。较少的