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h1 title img:National Metrology Institute of Japan

Development, dissemination, and use promotion of measurement standards and development of standards-related measurement technologies

As the national metrology institute (NMI), we are focusing on the development and dissemination of measurement standards, promotion of measurement standards utilization, development of measurement technologies related to measurement standards, legal metrology work and training of experts. Our activity covers engineering, physical, material, and chemical measurement standards. It also covers development of measurement and analytical instrumentation. We also coordinate international activities on metrology standards as a national representative.

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New Research Results

IoT-compatible Radiation Dosimeter for real-time and on-site monitoring

Researchers at AIST has been developed a compact radiation dosimeter using power-saving wireless technology. It does not require battery replacement for two years or more. The newly developed dosimeter combines the low power consumption technology developed by AIST at the time in response to the Fukushima Daiichi Nuclear Power Plant Accident with the latest IoT (Internet of Things) technology. This enables to check the radiation dose transition over time directly on the dosimeter unit display or an information terminal such as a smartphone, with almost no concern about battery drain.

Newly developed radiation dosimeter

Newly developed radiation dosimeter

High Resolution of Size Classification of Particles from 10 nm to 40 µm Was Achieved

AIST constructed an original rotor rotation mechanism that enables both sealing and high-speed rotation. The mechanism was introduced in a novel centrifugal field-flow fractionation system. The system can classify particles of a wide size range from 10 nm to 40 µm.

Figure of new research results National Metrology Institute of Japan

Centrifugal field-flow fractionation system has enabled fine classification of materials in a wide size range

Research Unit

Research Institute for Physical Measurement
Research Institute for Material and Chemical Measurement

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