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首页> 外文期刊>Japanese journal of applied physics >Effect of Polydispersity on Photonic Band Gap of Terahertz Photonic Crystals Fabricated by Particle Assembly
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Effect of Polydispersity on Photonic Band Gap of Terahertz Photonic Crystals Fabricated by Particle Assembly

机译：多分散度对粒子组装太赫兹光子晶体光子带隙的影响

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摘要

To fabricate terahertz photonic crystals via a particle assembly technique, sufficient understanding of the effect of particle size dispersity on the photonic band gap may aid the development of new processes and structures. In this study, a combination of experimental and numerical approaches was used to investigate the substantial effect of polydispersity. Polymer-inverted fcc crystals with structural errors were prepared from self-assembled and intentionally polydispersed metal particles. As the polydispersity increased, the band gap reduced and then steeply decreased above a particle size distribution of 4%. Comparison of this experimental spectrum with an analytical spectrum showed that the gap reduction originated due to the displacement of particles from ideal lattice points produced by the polydispersity but not due to the polydispersity itself. This result will aid the development of a new assembly technique for three-dimensional terahertz photonic crystal devices.
机译：为了通过粒子组装技术制造太赫兹光子晶体，充分了解粒径分布对光子带隙的影响可能有助于新工艺和结构的发展。在这项研究中，实验和数值方法的组合被用来研究多分散性的实质影响。由自组装和故意多分散的金属颗粒制备了具有结构误差的聚合物转化的fcc晶体。随着多分散性的增加，带隙减小，然后陡峭地下降至超过4％的粒度分布。该实验光谱与分析光谱的比较表明，间隙减小是由于颗粒从多分散性产生的理想晶格点的位移而引起的，而不是由于多分散性本身引起的。该结果将有助于开发用于三维太赫兹光子晶体器件的新组装技术。

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  • 来源
    《Japanese journal of applied physics》 |2009年第12期|122001.1-122001.4|共4页
  • 作者

    Kenta Takagi; Hutoshi Kanno; Keiko Kikuchi; Akira Kawasaki;

  • 作者单位

    Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;

    Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;

    Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;

    Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;

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