Metamaterials using nanosheets for THz wave intensity modulation device

• Project/Area Number: 26610084
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: Shinshu University
• Principal Investigator: SUGIMOTO Wataru 信州大学, 学術研究院繊維学系, 教授 (20313843)
• Co-Investigator(Kenkyū-buntansha): 宮丸 文章 信州大学, 学術研究院理学系, 准教授 (20419005)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: ナノシート / メタマテリアル / テラヘルツ

Outline of Final Research Achievements

The electromagnetic response of conducting nanosheet thin films in the THz region was investigated in order to pursue its applicability to novel THz optical devices. The transmittance in the THz region of four types of conductive nanosheets (K-RuO2, Na-RuO2, K-IrO2, reduced graphene oxide) was measured and the sheet impedance was calculated. The results showed that K-RuO2 is a material having a relatively high conductivity in the THz region. Owing to the relatively high THz wave adsorption capability of K-RuO2 nanosheet film, it is proposed that it can be applied as a thin film absorber in the THz region. The possibility of application to metamaterials was also pursued. It is concluded that even K-RuO2 nanosheet with the highest conductivity of the 4 nanosheets studied, does not have sufficient conductivity for application as a material of metamaterial structure.

Research Products

• [Presentation] メタマテリアル・メタ表面によるテラヘルツ波の制御 (2016)
  • Author(s): 宮丸文章
  • Organizer: 応用物理学会・量子エレクトロニクス研究会
  • Place of Presentation: 上智大学軽井沢セミナーハウス（長野県北佐久郡軽井沢町）
  • Year and Date: 2016-12-08
• [Presentation] 二酸化ルテニウムナノシートのテラヘルツ電気伝導特性 (2016)
  • Author(s): 武安一成，楠本雅志，宮丸文章，中田陽介，保科宏道，武田三男，杉本渉
  • Organizer: テラヘルツ科学の最先端III
  • Place of Presentation: 三国観光ホテル（福井県坂井市）
  • Year and Date: 2016-11-23
• [Presentation] 二酸化ルテニウムナノシートのテラヘルツ電気伝導特性の温度依存性 (2016)
  • Author(s): 楠本雅志，武安一成，宮丸文章，中田陽介，保科宏道，武田三男，杉本渉
  • Organizer: テラヘルツ科学の最先端III
  • Place of Presentation: 三国観光ホテル（福井県坂井市）
  • Year and Date: 2016-11-23
• [Presentation] Terahertz response of RuO2 nano sheets (2015)
  • Author(s): ○Masashi Kusumoto, Yousuke Nakata, Fumiaki Miyamaru, Mitsuo W. Takeda, Wataru Sugimoto
  • Organizer: The Second International Symposium on Frontiers in THz Technology
  • Place of Presentation: ACT CITY（静岡県浜松市）
  • Year and Date: 2015-08-30
  • Int'l Joint Research
• [Presentation] RuO2ナノシートのテラヘルツ応答 (2015)
  • Author(s): 楠本雅志，中田陽介，宮丸文章，武田三男，杉本渉
  • Organizer: 第62回応用物理学会春季学術講演会
  • Place of Presentation: 東海大学(湘南キャンパス)
  • Year and Date: 2015-03-11 – 2015-03-14