Terahertz spectroscopy of organic nanomaterials

• Project/Area Number: 25600033
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: National Institute of Information and Communications Technology
• Principal Investigator: KAJI Takahiro 独立行政法人情報通信研究機構, 未来ICT研究所 ナノICT研究室, 研究員 (40573134)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: テラヘルツ分光 / 有機材料 / 有機ナノ材料

Outline of Final Research Achievements

Terahertz spectroscopy provides information on lattice vibration or higher-order structure of organic materials and organic nanomaterials. In this study, we aimed to elucidate specific properties of these organic materials by using terahertz spectroscopy and fluorescence spectroscopy which provides information on behavior of excitons. We also aimed to develop a new technique for highly sensitive terahertz spectroscopy. Organic electro-optic polymers have large electro-optic coefficients and are expected as the promising materials to generate terahertz waves. We elucidated properties of the organic electro-optic polymers in terahertz region. We confirmed highly efficient generation of terahertz waves from the organic electro-optic polymer films.

Research Products

• [Journal Article] Enhanced photocurrent generation from bacteriorhodopsin photocells using grating-structured transparent conductive oxide electrodes (2015)
  • Author(s): Takahiro Kaji, Katsuyuki Kasai, Yoshihiro Haruyama, Toshiki Yamada, Shin-ichiro Inoue, Yukihiro Tominari, Rieko Ueda, Toshifumi Terui, Shukichi Tanaka, Akira Otomo
  • Journal Title: Journal of Nanoscience and Nanotechnology Volume: 印刷中
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Terahertz generation from electric-optic side-chain polymer films (2015)
  • Author(s): Takahiro Kaji, Toshiki Yamada, Yukihiro Tominari, Isao Aoki, Rieko Ueda, Shukichi Tanaka, Akira Otomo
  • Organizer: 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2015)
  • Place of Presentation: The Chinese University of Hong Kong, Hong Kong
  • Year and Date: 2015-08-23 – 2015-08-28
• [Presentation] THz and far-infrared spectroscopy of electro-optic polymers (2015)
  • Author(s): Toshiki Yamada, Takahiro Kaji, Maya Mizuno, Isao Aoki, Yukihiro Tominari, Shukichi Tanaka, Kaori Fukunaga, Akira Otomo
  • Organizer: Eighth International Conference on Molecular Electronics and Bioelectronics (M&BE8)
  • Place of Presentation: Tower Hall Funabori, Tokyo, Japan
  • Year and Date: 2015-06-22 – 2015-06-24
• [Remarks]
  • URL: http://www2.nict.go.jp/advanced_ict/nano/103/results/results-top.html