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Physics Programs & Projects

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Californium Neutron Irradiation Facility
Last Updated Date: 07/01/2015

NIST maintains the Californium Neutron Irradiation Facility (CNIF), which is an exposure facility providing fast neutrons for irradiations … more

Small Mass and Small Force Metrology at NIST
Last Updated Date: 07/01/2015

There are two projects: The electronic milligram; and NIST-on-a-chip optomechanical methods for calibration of mass, force, laser power and other … more

Calibration of Force Transducers
Last Updated Date: 07/01/2015

NIST provides calibration services for force-measuring devices by applying known forces, either tension or compression, to the elastic device and … more

National Type Evaluation Program (NTEP)
Last Updated Date: 07/01/2015

The NTEP program is administered through the National Conference on Weights and Measures (NCWM).

NIST Mise en Pratique of the New Kilogram Definition
Last Updated Date: 07/01/2015

As part of a New SI system of units to be adopted in 2018, the kilogram will be redefined so that it may be realized in terms of Planck’s … more

Calibration of Mass Standards
Last Updated Date: 06/30/2015

NIST maintains the national standard for mass in the form of the prototype kilograms (K4, K20, K79, K92, and K102) and provides services to … more

SI-traceable Dynamic Force
Last Updated Date: 06/30/2015

Established calibration methods for force transducers are static, with a known constant force applied to the transducer and compared to the … more

Reconditioning of the 4.45 MN deadweight machine
Last Updated Date: 06/30/2015

Physical disassembly of the 4.45 MN (1,000,000 lbf) deadweight machine (DWM) began in FY15 in order to address material galling that developed in … more

Single Photonics and Quantum Information
Last Updated Date: 06/26/2015

The smallest unit of light is a “photon”. Generation, manipulation and measurement of light at or near the fundamental limit of a photon can … more

Integrated Near-field Optoelectronic (INFO) Scanning Probe
Last Updated Date: 06/25/2015

Scanning probe technology is an essential tool for measuring nanostructure properties. A major goal in our project is to develop unique probes … more

GaN Nanowire Growth
Last Updated Date: 06/25/2015

GaN nanowires grown by catalyst-free molecular beam epitaxy have the unique property that most nanowires are completely free of crystalline … more

New Reference Standards for Digital Mammography
Last Updated Date: 06/24/2015

Reference radiation beams using a tungsten target and silver, rhodium, molybdenum and aluminum filters at 20 kVp to 50 kVp were developed to model … more

Test and Evaluation Protocols for ANSI/IEEE N42 Standards
Last Updated Date: 06/22/2015

The purpose of these test and evaluation protocols is to provide additional information to the published ANSI/IEEE N42 series for homeland … more

Standards Development for Detection of Illicit Trafficking of Radioactive
Last Updated Date: 06/22/2015

The National Institute of Standard and Technology (NIST) is working in the development of ANSI/IEEE and IEC standards for the detection of illicit … more

Gamma-ray Spectrometry System
Last Updated Date: 06/22/2015

NIST is equipped with a high resolution gamma-ray spectrometry system used for activity and impurity measurements of gamma-ray emitting sources … more

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