AIST / NMIJ — National Metrology Institute of Japan

Snapshot

Why it matters internationally

AIST/NMIJ is especially important as a long-term data infrastructure. Its Network Database System for Thermophysical Property Data explicitly includes both spectral emissivity and hemispherical total emissivity among curated properties, alongside reflectivity; individual materials pages show these quantities present in the archive. In parallel, AIST reports active R&D on nearly ideal blackbody materials and high-emissivity reference devices for thermography, placing it firmly in the emissivity / infrared-radiometry domain rather than only in generic materials databases. It is a crucial component of the field’s memory and data continuity.

Scope of activity

Relevant units

• TPDS — Network Database System for Thermophysical Property Data — AIST-run public resource. Database statistics explicitly list spectral emissivity, hemispherical total emissivity, and reflectivity among curated properties.
• Broader AIST / NMIJ programs on blackbody standards and thermography reference materials.

Radiative properties measured / curated

Spectral emissivity · hemispherical total emissivity · reflectivity · other thermophysical properties (broad coverage).

Capability envelope

• Methodology: database infrastructure for curated thermophysical- property data; R&D on nearly ideal blackbody materials and high- emissivity reference devices for thermography.
• Role: provides traceability and reference-material support for the thermography / radiation-thermometry community in Japan and internationally.

Signature infrastructure

• TPDS (Network Database System for Thermophysical Property Data). A public resource whose explicit inclusion of emissivity quantities makes it a genuine radiative-property database, not merely a general thermophysical-property archive.

Application domains

• Thermography and radiation thermometry references
• Data curation for thermophysical properties
• Long-term accessibility and reuse of radiative-property data
• Supply of reference blackbodies and high-emissivity devices

Why AIST / NMIJ is a reference pole

A research field only matures when it produces data infrastructures that outlive individual projects. TPDS is one of the very few public-sector thermophysical databases in the world that explicitly curates emissivity quantities, and it is operated by a national metrology institute that also produces the reference materials underpinning those measurements. That combination — long-term database plus active reference-material R&D — is rare, and places AIST/NMIJ in the foundational tier alongside PTB and NIST.

External sources

• TPDS — About (AIST)
• TPDS — Database statistics