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Mohd Mawardi Saari, Mohd Herwan Sulaiman, Nurul A'in Nadzri, Kenji Sakai, Toshihiko Kiwa, Estimation of hydrodynamic size distribution from AC Susceptibility: A model-free approach using Spline-Regularized Non-Negative Least Squares ," Measurement, Vol 271, 120979, 2026 https://doi.org/10.1016/j.measurement.2026.120979

We welcome inquiries from those interested in accessing the system or exploring potential collaborations. kiwa@okayama-u.ac.jp Specifications CH1 Imaging frequency band: 0.1–4 THz (Resolution: 3.8 / 7.6 / 61.0 GHz switchable) Parameters: Transmittance/Reflectance, Absorbance (for transmission), Absorption coefficient, Refractive index, Dielectric constant, Power (log/linear), Phase, Phase difference, Dielectric loss, Time waveform Mapping area: 150mm x 150mm CH2 spectroscopy

Please refer to the following link for a list of lab members. https://www.aemt-lab.com/members

BBQ party beneath the cherry blossoms

Prof. Kiwa visited to Universiti Malaysia Pahang Al-Sultan Abdullah (UMPSA) as a representative of Okayama University to discuss international collaboration and deliver a seminar. The visit featured engaging discussions on joint research opportunities, as well as a seminar session. I was also pleased to reconnect with our alumnus, Prof. Mohd Mawardi Bin Saari (photo, bottom left), with whom we continue to collaborate closely.

Jin Wang, Toshihiko Kiwa, "Small-molecule biosensing: from bio-inspired recognition elements and sensor devices to AI-guided design," Bulletin of the Chemical Society of Japan, 99(3), March 2026, uoag031; 10.1093/bulcsj/uoag031

Sakuya Kako, Excellent Presentation Award, 2025 Academic Year Master's Thesis Presentation Meeting, Department of Medical Devices and Medical Materials, Graduate School of Health Systems Integrated Science, March 1, 2026. Ren Nishimura, Excellent Presentation Award, 2025 Academic Year Master's Thesis Presentation Meeting, Department of Medical Devices and Medical Materials, Graduate School of Health Systems Integrated Science, March 1, 2026.

Yasumitsu Sakudo, NE&EE Course Special Research Presentation Award, "Development of a Bridge-Type Platinum Ultrathin Film Hydrogen Sensor," March 25, 2026.

You can watch the award ceremony on the Okayama University YouTube channel. https://www.youtube.com/live/oWKr83G8PtU?si=Ec2LKK_EUEQExhrS&t=4322

Mai Minami, Yuto Omi, Xue Ding, Huang Wang, Toshihiko Kiwa High-sensitive Detection of α-synuclein using a Terahertz Chemical Microscope The 73rd Spring Meeting of the Japan Society of Applied Physics, January 15-18, 2026, 18a-WL2_301-2 ​ Yuma Yamaguchi, Sota Itayama, Kohei Kawamoto, Nobuyuki Takeyasu, Wang Chuan, Toshihiko Kiwa Terahertz Biosensing Based on Silver tree-like fractal nano particles The 73rd Spring Meeting of the Japan Society of Applied Physics, January 15-18,

The Chugoku Shimbun (Economy, p.16), February 13, 2026 “Technisco Develops Room-Temperature Hydrogen Sensor; Production to Start in Kure This Year” https://www.chugoku-np.co.jp/articles/-/786694

Xue Ding, Yuto Ohmi, Jin Wang, Hirofumi Inoue, Toshihiko Kiwa, Highly sensitive detection of cancer cells using a voltage-tuned terahertz chemical microscope, Sensing and Bio-Sensing Research, 100972, 2026 https://www.sciencedirect.com/science/article/pii/S221418042600022X?via%3Dihub

Date: January 23, 2026 Location: Kobe City Industrial Promotion Center Lecture title: "Nano-thin films open up new possibilities for hydrogen detection - Development of ultra-platinum thin film hydrogen sensor that can operate at room temperature" Lecturer: Toshihiko Kiwa

Yuto Omi, Xue Ding, Xu Wang, Hirofumi Inoue, Toshihiko Kiwa Evaluation of cancer cell ratio in cell mixture using terahertz chemical microscope, 46th Annual Meeting of the Laser Society of Japan, January 13-15, 2026, P01-14p-P

Shengli Zhou, Yuji Furutani, Kei Yamashita, Sakuya Kako, Kazunori Watanabe, Toshihiko Kiwa and Takashi Ohtsuki, "Magnetic Detection of Cancer Cells Using Tumor-Homing Peptide-Modified Magnetic Nanoparticles," Biosensors 2026 , 16 (1), 45; https://doi.org/10.3390/bios16010045

Ryosuke Kurokawa, Development of blood coagulation measurement method using HTS-SQUID Sakuya Kako, Development of a time-dependent immunoassay using antibody-modified glass tubes and HTS-SQUID

Yuto Ohmi , Xue Ding, JinWang, Hirofumi Inoue, Toshihiko Kiwa , "Identification and Quantitative Evaluation of Cells Using Terahertz Chemical Microscopy," The 4th International Symposium on Frontier in THz Technology(FTT2025), 2025.10.14-17, Tokushima, Japan, P-FTT-12