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Physics Programs & Projects

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Photodetector Analysis for Biological Agent Detection
Last Updated Date: 11/16/2012

Photomultiplier tube (PMT) analysis with respect to PMT sensitivity and long-term stability using synchrotron radiation.

NIST Lyman-Alpha Neutron Detector (LAND)
Last Updated Date: 11/16/2012

The well-known interaction of low-energy neutrons and 3 He produces a proton and a triton with 764 keV of kinetic energy shared between the two … more

Bilateral Comparison of Spectral Responsivity in the Vacuum-Ultraviolet
Last Updated Date: 11/16/2012

To compare the calibration capabilities for the spectral responsivity in the vacuum-ultraviolet spectral region between 135 nm and 250 nm, PTB and … more

Long-Term Monitoring of the Ultraviolet Irradiance Scale
Last Updated Date: 11/16/2012

In 2004, the National Institute of Standards and Technology NIST established the ultraviolet spectral irradiance scale from 200 nm to 400 nm using … more

NIST Stars
Last Updated Date: 11/16/2012

NIST Stars is an Innovations in Measurement Science project to create a catalog of stars whose top-of-the-atmosphere spectral flux has an SI … more

Spectral irradiance and radiance responsivity calibrations using uniform sources (SIRCUS)
Last Updated Date: 11/16/2012

SIRCUS is a reference facility for the calibration of detectors and radiometers for spectral irradiance responsivity and spectral radiance … more

Primary optical watt radiometer (POWR)
Last Updated Date: 11/16/2012

The Sensor Science Division of NIST realizes and maintains the unit of optical power (watt) with the NIST reference cryogenic radiometer, Primary … more

Infrared optical properties of materials and components
Last Updated Date: 11/15/2012

Accurate measurements of the optical properties of materials in the infrared spectral range play an increasingly important role in the aerospace … more

Color and appearance
Last Updated Date: 10/17/2012

We are developing instrumentation, standards artifacts, and measurement protocols to characterize appearance attributes including color, texture, … more

Surface Plasmon Resonance Imaging of Cells and Extracellular Matrix Proteins
Last Updated Date: 10/10/2012

A critical challenge in cell biology is imaging and quantifying the interactions of cells with their extracellular matrix (ECM) environment, and … more

Chemical/Biochemical Microsensor Science
Last Updated Date: 10/02/2012

The Process Sensing Group at NIST is investigating a range of fundamental and technological issues related to next-generation chemical and … more

Spectral responsivity measurement
Last Updated Date: 10/02/2012

NIST provides calibration of the spectral responsivity and spatial uniformity of photodetectors for use in industrial and government labs. These … more

Energy Determination of X-Ray Transition Energies Using the NIST TES Microcalorimeter Detector
Last Updated Date: 10/02/2012

Previous efforts to produce a comprehensive tabulation of atomic x-ray transition energies have been hampered by the fact that a) detectors having … more

Molecular Orbital Structure of Energetic Nitrogen Compounds from X-Ray Emission Spectroscopy
Last Updated Date: 10/02/2012

When chemical compounds of low-Z elements are excited by x-rays, the ionized core states are filled from the valence band. The molecular orbital … more

Inkjet Gravimetry
Last Updated Date: 10/02/2012

Gravimetric and optical methods were developed to assure quantitative deposition of compounds from nano-dispense devices onto the surfaces of … more

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