Control of polarization and propagation of microwave using structural resonance

2014 Fiscal Year Final Research Report

• Project Area: Electromagnetic Metamaterials
• Project/Area Number: 22109004
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Kyoto University
• Principal Investigator: KITANO Masao 京都大学, 工学(系)研究科(研究院), 教授 (70115830)
• Co-Investigator(Kenkyū-buntansha): DEGUCHI Hiroyuki 同志社大学, 理工学部, 教授 (80329953) ; SAKAI Osamu 滋賀県立大学, 工学部, 教授 (30362445) ; HISAKADO Takashi 京都大学, 大学院工学研究科, 准教授 (80301240) ; NAKANISHI Toshihiro 京都大学, 大学院工学研究科, 助教 (30362461) ; TAMAYAMA Yasuhiro 長岡技術科学大学, 大学院工学研究科, 助教 (50707312)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: メタマテリアル / マイクロ波 / 群速度制御 / 非線形効果 / プラズマ / 最適化設計 / 任意形状素子 / 回路モデル

Outline of Final Research Achievements

We have proposed new concepts such as no-reflection condition for chiral medium and frequency-independent response of self-complementary meta-surface. We have demonstrated storage of electromagnetic waves and enhancement of second harmonic generation with coupled-resonator-based metamaterials. In the analysis of plasma metamaterials, we have comfirmed dynamic negative-refractive-index and nonlinearity enhancement (bifurcation and harmonic generation). Metamaterials with arbitrarily shaped elements have been proposed and developed by using the genetic algorithm based on the electromagnetic field analysis. The proposed methods have been verified numerically and experimentally. We theoretically derived circuit models for metallic structures from Maxwell equation. They give us physical insights of electromagnetic phenomena in metamaterials.

Free Research Field

量子エレクトロニクス