Study on dynamic fluctuation by terahertz and FIR spectroscopy using metal parallel-plate waveguide

2019 Fiscal Year Final Research Report

• Project/Area Number: 16K05649
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: University of Fukui
• Principal Investigator: Yamamoto Kohji 福井大学, 遠赤外領域開発研究センター, 准教授 (70432507)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Keywords: テラヘルツ分光 / 遠赤外分光 / 金属導波路

Outline of Final Research Achievements

We investigated transmission properties of terahertz waves through a metal parallel-plate waveguide sandwiching a plastic tube. We have taken a forward step in developing terahertz spectroscopy using a minute fluid channel. We showed that loss attenuation peaks observed in this system can be applied in terahertz spectroscopy from terahertz spectroscopic experimental results as well as those obtained by computer simulations based on the finite element method.
We experimentally investigated dynamical fluctuations of human adult hemoglobin (Hb A) originating cotroling oxygen affinity. We obtained fluctuation properties of the main chain of Hb A in high and low oxygen affinity.

Free Research Field

テラヘルツ分光

Academic Significance and Societal Importance of the Research Achievements

金属導波路を用いて微量液体流路をカップルさせた金属導波路の開発を進めることができ、タンパク質の「機能発現」と「テラヘルツ領域の揺らぎ」との相関に関する新たな知見を得ることに成功し、テラヘルツ分光が動的揺らぎの研究の進展に寄与することを示した。