Pros and Cons of THz and Far-infrared Absorption Spectroscopy for Dielectric Materials Research

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2021/10/01

タイトル(英語): Pros and Cons of THz and Far-infrared Absorption Spectroscopy for Dielectric Materials Research

著者名: Yoshimichi Ohki (Research Institute for Materials Science and Technology, Waseda University), Naoshi Hirai (Research Institute for Materials Science and Technology, Waseda University)

著者名(英語): Yoshimichi Ohki (Research Institute for Materials Science and Technology, Waseda University), Naoshi Hirai (Research Institute for Materials Science and Technology, Waseda University)

キーワード: intermolecular vibration，intramolecular vibration，dielectrics，materials research，spectroscopic analysis

要約(英語): For researching dielectrics, various spectroscopic analyses must be conducted. Optical absorption spectroscopy is one of such spectroscopic measures. Fourier-transform mid-infrared (FT-MIR) absorption spectroscopy, which uses MIR photons, is very popular and can detect intramolecular vibrations or vibrations of a relatively small chemical group occurring inside a molecule. In contrast, FT-far-IR (FT-FIR) absorption spectroscopy is suitable for the detection of vibrations of an entire molecule or those of a big chemical group. Furthermore, there is another piece of emerging absorption spectroscopy, called THz absorption spectroscopy. The THz spectroscopy is believed to be able to detect intermolecular vibrations. The pros and cons of THz and FT-FIR absorption spectroscopy as a characterization tool for dielectric materials research are discussed in comparison to FT-MIR spectroscopy, by showing several typical examples of experimental results acquired in the authors' laboratory.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.141 No.10 （2021） 特集：9th International Symposium on Electrical Insulating Materials

本誌掲載ページ: 521-526 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/141/10/141_521/_article/-char/ja/