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Physics Programs & Projects

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Photometry
Last Updated Date: 07/15/2014

The purpose of photometry is to measure light in a way that takes the sensitivity of human visual system into account. While radiometry measures … more

Neutron Interferometry with Polarized Neutrons as an Additional Degree of Freedom
Last Updated Date: 07/15/2014

Our goal is to apply Quantum Information Processing techniques to improve neutron interferometry contrast by making our final measurement … more

Photovoltaic Carrier Dynamics Measured by Time-Resolved Terahertz Spectroscopy
Last Updated Date: 07/11/2014

Far-infrared (or THz, 25 to 300 micron wavelength) femtosecond laser methods are employed to measure photovoltaic (PV) materials spectra and … more

State-resolved Biomolecular Spectroscopies
Last Updated Date: 07/03/2014

Sensitive and fully state resolved spectroscopic methods in the terahertz (THz) and ultraviolet (UV) regions are being developed to investigate … more

Molecular Imaging
Last Updated Date: 07/01/2014

Biophotonics is at the intersection of photonics and biology where light is used to image, detect, and manipulate biological materials. This … more

In Situ Measurement Techniques
Last Updated Date: 07/01/2014

Synthetic cell membrane constructs allow the simplification and complete control of a more complicated cellular system, as well as the … more

Synchrotron X-ray Measurements
Last Updated Date: 05/21/2014

Our objective is to provide comprehensive descriptions of the structure of advanced materials and devices by performing synchrotron-based … more

Synchrotron X-ray Measurement Method Development
Last Updated Date: 05/21/2014

Our goal is to develop state of-the-art synchrotron X-ray measurement technology, including instrumentation, methods, and analytical tools, to … more

Synchrotron Beamline Operations
Last Updated Date: 05/21/2014

Our objective is to ensure that the NIST beamlines U7A, X23A2, and X24A, located at the National Synchrotron Light Source (NSLS) at Brookhaven … more

CODATA values of the fundamental constants
Last Updated Date: 04/29/2014

Every four years, the Committee on Data for Science and Technology (CODATA) issues recommended values of the fundamental physical constants. The … more

Quantum Physics Theory
Last Updated Date: 04/29/2014

Theoretical work relevant to the determination of values of the fundamental constants, tests of bound-state quantum electrodynamics (QED), and … more

International System of Units (SI)
Last Updated Date: 04/29/2014

The International System of Units (SI) provides definitions of units of measurement that are widely accepted in science and technology and which … more

Broadband Coherent anti-Stokes Raman Spectroscopy of Thin Films
Last Updated Date: 04/16/2014

Coherent anti-Stokes Raman Scattering (CARS) is a high sensitivity alternative to conventional Raman spectroscopy. Ultrafast lasers are used to … more

Terahertz Bi-Directional Reflection Function Measurements for Homeland Security
Last Updated Date: 04/09/2014

Far-infrared (Terahertz or THz, 25 to 300 micron wavelength) femtosecond laser methods are employed to generate high power broadband pulses for … more

Test and Evaluation Protocols for ANSI/IEEE N42 Standards
Last Updated Date: 03/25/2014

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

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