TY - GEN
T1 - Broadband Infrared Absorption Spectroscopy as a Tool for Dielectric Materials Research
AU - Ohki, Yoshimichi
AU - Hirai, Naoshi
N1 - Funding Information:
This work was partly supported by JSPS Grant-in-Aid for Challenging Research (Exploratory), JP 17K18889..
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - Among various spectroscopic tools used in materials research, optical absorption spectroscopy is one of the most fundamental. Although mid-infrared (mIR) absorption spectroscopy is widely used, far-infrared (fIR) and THz absorption spectroscopy are not. This article shows that the use of all these spectroscopic tools is valuable for a deep understanding of materials, especially for dielectric materials. The reason for this is that the mIR photons are suitable to detect intramolecular vibrations or vibrations of a relatively small chemical group, whereas the fIR photons can detect vibrations of an entire molecule or those of a large chemical group. Furthermore, the THz spectroscopy is adequate to detect intermolecular vibrations. Several typical experimental results obtained by the authors, showing the above, are introduced.
AB - Among various spectroscopic tools used in materials research, optical absorption spectroscopy is one of the most fundamental. Although mid-infrared (mIR) absorption spectroscopy is widely used, far-infrared (fIR) and THz absorption spectroscopy are not. This article shows that the use of all these spectroscopic tools is valuable for a deep understanding of materials, especially for dielectric materials. The reason for this is that the mIR photons are suitable to detect intramolecular vibrations or vibrations of a relatively small chemical group, whereas the fIR photons can detect vibrations of an entire molecule or those of a large chemical group. Furthermore, the THz spectroscopy is adequate to detect intermolecular vibrations. Several typical experimental results obtained by the authors, showing the above, are introduced.
KW - Electrical insulation
KW - Instrumental analysis
KW - Insulating polymer
KW - Lattice vibration
KW - Phonon
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U2 - 10.1109/CATCON52335.2021.9670511
DO - 10.1109/CATCON52335.2021.9670511
M3 - Conference contribution
AN - SCOPUS:85124951452
T3 - Proceedings of 2021 5th International Conference on Condition Assessment Techniques in Electrical Systems, CATCON 2021
SP - 330
EP - 334
BT - Proceedings of 2021 5th International Conference on Condition Assessment Techniques in Electrical Systems, CATCON 2021
A2 - Haque, Nasirul
A2 - P., Preetha
A2 - K., Sunitha
A2 - T.K., Sindhu
A2 - Chatterjee, Biswendu
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 5th International Conference on Condition Assessment Techniques in Electrical Systems, CATCON 2021
Y2 - 3 December 2021 through 5 December 2021
ER -