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Projects/Programs

Topic Area
Displaying 551 - 575 of 1638
Food Nutrition Safety QAP

Food Nutrition and Safety Measurements Quality Assurance Program (FNSQAP)

Ongoing
As part of a revamp of QAPs in 2021, NIST established the FNSQAP to support the NIST Food Safety Program and Measurements and Standards to Support Nutrition Labeling. Participants measure nutrient components (e.g., minerals, vitamins, fatty acids, dietary fiber) and contaminants (e.g., toxic

Forensic Chemistry

Ongoing
Drug Analysis - Opioids and Emerging Threats This program primarily seeks to support the needs of the > 400 publicly funded state, local, and tribal forensic laboratories in the United States. The increased complexity of the analysis needed to keep pace with these emerging threats has resulted in
The inside of a DNA extraction robot hold tube in a rack

Forensic Genetics

Ongoing
Since the late 1980s, NIST has had scientists involved in DNA testing (aka "DNA Fingerprinting"). Early concerns over measurement accuracy and poor quality control of forensic DNA tests caused the Department of Justice to call upon NIST scientists to help with standards development and technology
Composite photo shows a holdup note on the left labeled "Questioned Handwriting," with two "Known Samples" on the right.

Forensic Handwriting Examination and Human Factors

Completed
For some 6,000 years, humans have made an indelible mark on history through the loops, strokes, and other characters that constitute the written form of language—handwriting. Whether it is the movement of a stylus inscribing wet clay or the motion of a pen across paper, handwriting is one of the
Mechanical stylus instrument

Forensic Topography and Surface Metrology

Ongoing
Surface texture and microform Surface texture affects the functionality of many products, ranging from bearings to semiconductors and optics. Affected properties include aesthetics, friction, wear, lubrication, sealing, light scattering, and conductivity. Improvements in parameters and metrology to
forest

FOREST

Ongoing
The goals of the research are to: Provide a testbed (Forested Optical Reference for Evaluating Sensor Technology, FOREST) for ecophysiological and optical sensors with well-established reference points Quantify ecosystem phenomenology that will allow for better estimates of productivity Link leaf
Photograph of a labeled amber bottle containing SRM 2683c Bituminous Coal.

Fossil Fuel Standard Reference Materials

Ongoing
The regulatory requirements with respect to air quality and fossil fuel specifications are continually changing, and consequently the associated measurement needs of the fossil fuel energy industries also change. For example, in recent years there has been a dramatic reduction in the allowable

Foundations of Measurement Science for Information Systems

Ongoing
According to the National Research Council report Network Science (2006), "[Despite] society's profound dependence on networks, fundamental knowledge about them is primitive. [G]lobal communication ... networks have quite advanced technological implementations but their behavior under stress still
Logo for Free Energy and Advanced Sampling Simulation Toolkit (FEASST)

Free Energy and Advanced Sampling Simulation Toolkit (FEASST)

Ongoing
Intended Impact While flat-histogram Monte Carlo simulations have been shown to be a promising method for the direct calculation of complex fluid phase behavior with a variety of applications, most open-source Monte Carlo simulation packages do not support this method. We have therefore made FEASST
infrared starlight

Frequency Comb Calibration of Astronomical Spectrographs

Ongoing
A powerful technique for finding exo-planets is based on measuring the tiny Doppler shifts in the light from a star that is induced by the presence of orbiting planets. While many exo-planets have been discovered using this Doppler radial velocity (RV) technique, it remains a significant technical
CombSpec1

Frequency Comb Spectroscopy

Ongoing
Erbium mode-locked fiber lasers are a mature technology that provide a means to build robust optical frequency combs centered near 1550 nm. One research focus of our group is to extend the optical bandwidth of Er fiber-based combs into the near- to mid-infrared wavelength region of 1000 to 5000 nm
single_photon_QFT_schematic

Frequency Conversion Interfaces for Photonic Quantum Systems

Ongoing
Our research on quantum frequency conversion follows two main tracks. First, we combine relatively mature frequency conversion technology based on periodically-poled lithium niobate waveguides with quantum light generated by single semiconductor quantum dots in proof-of-principle experiments that
NIST FMAS

Frequency Measurement and Analysis Service (FMAS)

Ongoing
Subscribers to the NIST service receive a complete frequency measurement system which includes everything needed to make precision frequency measurements that are traceable to NIST. An easy-to-read instruction manual makes installation a snap. Once the system is installed, it's easy to get started
dual-comb spectroscopy illustration

Frequency-comb-based Spectroscopy (Dual-Comb Spectroscopy)

Ongoing
Fully stabilized frequency combs provide a broadband spectral output that is comprised of a series of narrow spectral lines or “teeth”. “Dual comb spectroscopy” provides one method to harness these properties for broadband spectroscopy. It allows the user to read-out the spectrum of a gas mixture on
Figure4

Functional Analysis of Variance

Ongoing
Assessment of measurement data often raises statistical inference questions which have not been adequately addressed in the statistical literature. For example, NIST scientists may encounter issues on whether two measurement techniques give arise to similar measurement curves, whether there is a
Cube test

Functional Barriers for Low-Flammability Products

Ongoing
This project enables low-flammability products without flame retardants by providing methods to assess functional barriers, advancing their performance, and exploring their use in multi-layer products for critical applications.

Functional Recovery of Buildings and Lifelines

Ongoing
Objective The Functional Recovery project is designed to improve the time for recovery of key social functions by strengthening the built environment to withstand earthquake impacts. Our efforts will advance measurement science for the assessment and design of buildings and lifelines, contribute in
schematic diagram

Fundamental Constants in Nature

Ongoing
The Task Group on Fundamental Constants periodically publishes updated evaluations of the fundamental constants of physics and chemistry. These evaluations serve two purposes. First, they provide a self-consistent set of recommended values of the constants for all to use. Second, because they
Fundamental Electromagnetic Technologies and Standards

Fundamental Electromagnetic Technologies and Standards

Ongoing
This focus area develops theory, metrology, and standards for the technologies upon which the future of both wired and wireless communications depends. These developments are then leveraged to provide better measurement services to U.S. industry through extended frequency range, lowered uncertainty

Fundamental Guided Wave Metrology

Ongoing
The science of microwave measurements is expanding in many different directions. There is a constant push to use higher frequencies. Signals are becoming much more complex and include modulation effects, multiport/differential signals, complex waveforms, and other unusual signal schemes. On-wafer