Terahertz spectroscopy as a new analyzing tool for dielectric properties of various insulating materials

Y. Ohki, M. Okada, N. Fuse, K. Iwai, M. Mizuno, K. Fukunaga

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

Several examples of terahertz (THz) spectroscopic measurement results carried out for dielectric solids are reviewed, including THz time-domain spectra of polyamide-6 composites with nm-sized clay fillers obtained by the authors. For polyamide nanocomposites, it has become clear that the dielectric loss factor shows two peaks at around 1.9 THz and 2.7 to 3.1 THz. By referring to X-ray diffraction spectra, it is assumed that the origin of the former peak is the α-phase crystal in polyamide, and that the nanofiller loading suppresses α-phase crystallization. The latter peak shifts toward a lower frequency in the nanocomposites, which indicates that the presence of strong ionic bonds between the nanofiller and the polymer matrix restrains molecular motion and increases the relaxation time. This is believed to be the main reason of superior properties of the polymer nanocomposites.

本文言語English
ホスト出版物のタイトル2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008
ページ33-36
ページ数4
DOI
出版ステータスPublished - 2008 12 1
イベント2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008 - Quebec City, QC, Canada
継続期間: 2008 10 262008 10 29

出版物シリーズ

名前Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
ISSN(印刷版)0084-9162

Conference

Conference2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008
CountryCanada
CityQuebec City, QC
Period08/10/2608/10/29

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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