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Physics Programs & Projects

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Affect of Partial Charge Calculation Method on Adsorption Thermodynamics
Last Updated Date: 09/15/2015

In classical molecular simulations, electrostatic contributions to the potential energy are typically accounted for by assigning partial charges … more

Spectral responsivity measurement
Last Updated Date: 09/15/2015

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

SI-traceable Dynamic Force
Last Updated Date: 09/14/2015

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

Theory of the optical properties of materials
Last Updated Date: 09/09/2015

The overarching objective of this project is reliably calculating the bulk optical properties of materials, such as complex index of refraction, … more

Sources, detectors and metrology
Last Updated Date: 09/09/2015

We develop and learn how to characterize non-classical sources and single-photon detectors. It turns out that it is not enough to characterize … more

Nano-Structured Optics and Optical Surface Metrology
Last Updated Date: 09/08/2015

The project focuses on significant metrology challenges that impede the advancement of high-performance optical and photonic systems. We develop, … more

Last Updated Date: 09/02/2015

Critical to quantum information applications is the need to store a quantum state while other qbits are created or processed.

Detector metrology
Last Updated Date: 09/02/2015

High performance optical radiometers with selected optical detectors are being designed, characterized, and calibrated in the Optical Radiation … more

Quantum Biophotonics
Last Updated Date: 09/02/2015

Faint light detection is a staple in biology- used from systems biology research to bioassays for biomanufacturing and healthcare diagnostics.

Universal Quantum Bus
Last Updated Date: 09/02/2015

If quantum computers are ever to be realized, they likely will be made of different types of parts that will need to share information with one … more

Vacuum-Ultraviolet Optical Properties of Cryogenic Water Ices
Last Updated Date: 09/01/2015

The optical properties of cryogenic water ices in the vacuum-ultraviolet spectral range are studied.

Extreme Ultraviolet Detector Calibration Service
Last Updated Date: 09/01/2015

The extreme ultraviolet detector (EUVD) calibration service disseminates the U.S. national scale of detector responsivity in the wavelength range … more

Calibration of Low-Energy Photon Brachytherapy Sources
Last Updated Date: 08/31/2015

Small radioactive "seed" sources used in prostate brachytherapy, containing the radionuclide 103 Pd, 125 I, or 131 Cs, are calibrated in terms of … more

National Air-Kerma Standard for Electronic Brachytherapy
Last Updated Date: 08/31/2015

The Dosimetry Group has developed a new facility for the calibration of the Xoft miniature x-ray source, which provides low-energy x-rays (< 50 … more

Calibration of Beta-Particle Sources and Instruments for Radiation Protection
Last Updated Date: 08/31/2015

A calibration service for protection-level beta-particle sources and instrumentation has been in place at NIST for several years.

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