京都大学 · 農学・生物学
庄司哲人教授の研究室では、テラヘルツ分光法を用いた農薬残留分析の可能性を追求しており、特に水の干渉を避けるための凍結乾燥処理や、バイオマトリックスや製剤成分による干渉の解消に注力しています。また、金属メッシュセンサーを用いたナノスケールの酸化シリコン膜の厚さ測定技術の開発も進め、電磁界の局所集中特性を利用した高感度な非破壊評価手法の確立を目指しています。
Figures are computed from collected data and may differ slightly.
The feasibility of terahertz (THz) spectroscopy as a potential pesticide residue analytical tool was evaluated by using cis-permethrin as the test compound. THz spectra were measured by fourier-transform spectroscope at the THz region, frequency range from 20 to 400 cm-1. Freeze-drying was effective to remove interference of water from samples. The absorption wave numbers of cis-permethrin were similar with or without the presence of biological matrix such as spinach, and other pesticide compoun
The effectiveness of metallic mesh sensors to quantitatively measure thickness was evaluated by transmission spectra of sub- μm-thick SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> layers deposited on a 6-μm-thick metallic mesh. Initially, we simulated the transmission spectra and the localized electric field distribution of different-sized periodic structures using the finite difference time domain method. Both the wavelength of the re
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