RIKEN Center for Advanced Photonics Terahertz Sensing and Imaging Research Team

Team Leader: Chiko Otani (D.Sc.)

Japanese Page

Research Summary

Terahertz (THz) wave has the unique characteristics such as the transparency to many soft materials and their spectral absorption features. Combined with the growing expectations for Beyond 5G/6G in recent years, research and development is progressing in a wide range of research and industrial fields. Our team is developing new technologies and pioneering research and application fields related to the use of THz wave, with sensing and imaging using the wave as the probe. In particular, we are conducting research on controlling the structures and functions of biomolecules using THz irradiation, as well as research and development of extremely sensitive detectors using superconducting detectors. We are also promoting the development of applications through joint research with companies.

Main Research Fields

Engineering

Related Research Fields

Engineering
Chemistry
Agricultural Sciences
Interdisciplinary Science & Engineering
Mathematical & Physical Sciences
Biology
Medicine, Dentistry & Pharmacy
Millimeter wave/terahertz wave
Superconductor
protein

Keywords

Terahertz sensing and imaging
Terahertz science and technology
Control of biological structures and functions
Superconducting detector
Terahertz applications

Selected Publications

1.De Miguel, J., Hernández-Cabrera, J. F., Hernández-Suárez, E., Joven-Álvarez, E., Otani, C., and Rubiño-Martín, J. A.:
"Discovery prospects with the Dark-photons & Axion-Like particles Interferometer"
Physical Review. D 19, 6, 062002 (2024).
2.Feng, C. H., Otani, C., and Hoshina, H.:
"Characterization of Different Types of Crystallization from Cocoa Butter by Using Terahertz Spectroscopy"
Appl. Sci. 14, 35 (2024).
3.Ikari, T., Sasaki, Y., and Otani, C.:
"275-305 GHz FM-CW radar 3D imaging for walk-through security body scanner"
Photonics. 10, 3, 343 (2023).
4.Yamazaki, S., Ueno, Y., Hosoki, R., Saito, T., Idehara, T., Yamaguchi, Y., Otani, C., Ogawa, Y., Harata, M., and Hoshina, H.:
"THz irradiation inhibits cell division by affecting actin dynamics"
PloS One 16. e0248381 (2021).
5.Lee, K., Génova-Santos, R. T., Hazumi, M., Honda, S., Kutsuma, H., Oguri, S., Otani, C., Peel, M. W., Suzuki, J., Tajima, O., and Won, E.:
"A forecast of the sensitivity on the measurement of the optical depth to reionization with the GroundBIRD experiment"
Astrophys. J. 915, 88 (2021).
6.Momiyama, H., Sasaki, Y. Yoshimine, I., Nagano, S., Yuasa, T., and Otani, C.:
"Depth super-resolved imaging of infrastructures defects using a terahertz-wave interferometer"
NDT&E International 120, 102431 (2021).
7.Yamashita, M. and Otani, C.:
"Intrinsic and extrinsic effects on intraband optical conductivity of hot carriers in photoexcited graphene"
Physical Review Research 3, 043143 (2021).
8.Feng, C.-H. and Otani, C.:
"Terahertz spectroscopic imaging technology as an innovative technique for food: Current state-of-the-art research advances"
Crit. Rev. Food Sci. Nutr. 61, 2523 (2020).
9.Yamazaki, S., Harata, M., Ueno, Y., Tsubouchi, M., Konagaya, K., Ogawa, Y., Isoyama, G., Otani, C., and Hoshina, H.:
"Propagation of THz irradiation energy through aqueous layers: Demolition of actin filaments in living cells"
Scientific Reports 10, 9008 (2020).
10.Suzuki, H., Ishida, M., Otani, C., Kawachi, K., Kasama, Y., Won, E., Miyazaki, Y., and Nakano, M.:
"The thermodynamics properties and molecular dynamics of [Li+@C60](PF6-) associated with structural phase transitions"
Phys. Chem. Chem. Phys. 21, 16147 (2019).