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Standards

Calibration services

News and Updates

Events

Projects and Programs

Low Scatter Neutron Calibration Facility

Calibrations: Neutron Device Calibrations

Ongoing
The Neutron Physics Group calibrates neutron radiation detectors used for personnel protection and irradiates personnel dosimeters in standard neutron fields. The fields are produced by unmoderated 252Cf and 252Cf moderated with a D 2O sphere (represented by the gray sphere near the center of the

Primary optical watt radiometer (POWR)

Ongoing
The POWR, including the detector module, was completely designed by NIST to have the versatility to grow with NIST's needs and embrace new technologies. It provides optical power measurements with uncertainties of 0.01 % ( k=1), which have been verified by an intercomparison with two other cryogenic
spectral responsivity lab

Spectral responsivity measurement

Ongoing
The spectral responsivities of typical photodiodes that are used in the ultraviolet, visible, and near-infrared and calibrated by the SCFs are shown below. **Any commercial equipment, instruments, or materials mentioned are identified to foster understanding. Such identification does not
LED examples

Solid-state lighting metrology

Ongoing
Light Emitting Diodes (LEDs) are increasingly being introduced into lighting market, and solid state lighting (SSL) is becoming a reality. But, this new technology still faces many challenges. Lighting consumes a huge amount of energy, currently 22% of all electricity consumed in the U.S. White LED

Publications

Traceable RF Power Metering Procedures With Thermoelectric Sensors

Author(s)
Zenn Roberts, Aaron Hagerstrom, Cole Gray, Angela Stelson, Vincent Neylon, Christian Long
The National Institute of Standards and Technology (NIST) maintains the United State's primary standards for traceable RF and mm-wave power measurements. These

Tools and Instruments

Stylus Profilometer

Stylus Profilometer

The Taylor Hobson Form Talysurf PGI 1240 is a mechanical stylus profilometer for surface texture and microform measurements. Its primary purpose is for the

Awards