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Projects/Programs

Topic Area
Displaying 526 - 550 of 1638

Fiber-optic Frequency Comb Development

Ongoing
Frequency combs have found a wide range of applications beyond just optical metrology. Applications include laser ranging, precision molecular spectroscopy in the lab and over the air, optical timing distribution, low-noise microwave generation and support for optical clocks. All these applications

Field Programmable Gate Array (FPGA) Designs for Metrology

Ongoing
Until recently, the precision measurement of phase noise, spectral purity, and related quantities had been a challenging process, with only a handful of qualified experts in the world. However, Field Programmable Gate Array (FPGA) based measurement systems, similar to software defined radio (SDR)

Fingerprint

Ongoing
Fingerprint Recognition We conduct technology evaluations of fingerprint matching, identification, and verification systems. Fingerprint Compression To establish normative guidance and certification pathways for the compression of fingerprint imagery. ANSI/NIST-ITL Standard The standard provides

Fingerprint Chemistry

Ongoing
Verification Test Materials (VTMs) for Fingerprint Developing Reagents The forensic community has no quantifiable QA/QC method for determining the efficacy of fingerprint developing reagents prior to use in casework. Reagents can be exposed to environmental conditions in the field that can expedite

Fingerprint Compression

Ongoing
Biometric Compression Information In July of 2009 NIST in partnership with the FBI commenced an investigation on the use of JPEG 2000 for compressing fingerprint imagery with the ultimate goal to establish a normative guidance and certification pathway for the compression of 1000 ppi friction ridge

Fingerprint Recognition

Ongoing
N2N Fingerprint Capture Challenge IARPA has invited the biometrics research community to participate in the Nail-to-Nail (N2N) Fingerprint Capture Challenge. This official U.S. Government Challenge problem seeks to reward researchers for creating autonomous rolled capture devices whose images

Fingerprint Technology Testing for Identity Management

Ongoing
Most biometric-enabled identity management (IdM) systems utilize fingerprint technology for enrolling and issuing credentials, and then in subsequent authentication transactions. It is important to evaluate and understand the performance characteristics and limitations of fingerprint matching

Fingerprint Vendor Technology Evaluation (FpVTE)

Completed
The Fingerprint Vendor Technology Evaluation (FpVTE) is an independently administered technology evaluation of fingerprint matching, identification, and verification system. It has been rebranded as FRIF TE E1N.

FiPy

Ongoing
The solution of coupled sets of PDEs is ubiquitous to the numerical simulation of science problems. Numerous PDE solvers exist, using a variety of languages and numerical approaches. Many are proprietary, expensive and difficult to customize. As a result, scientists spend considerable resources

Fire Debris and Explosives

Ongoing
Fire Debris Fire debris analysis involves the collection, analysis, and interpretation of data of debris collected from fire scenes. Samples are typically analyzed by gas chromatography mass spectrometry which results in a complicated chromatogram that must be interpreted. Projects in this area are

Fire Risk Reduction in Buildings Program

Ongoing
This program advances fire measurement capabilities, predictive models, testing methods, detection technologies, and fire-resistant materials to create innovative, cost-effective solutions that enhance occupant safety and improve the fire resistance of buildings and their contents.

Fire Risk Reduction in Communities Program

Ongoing
This program advances measurement science to improve community and building resilience to fires, address risks of new technologies, and enhance firefighter awareness and equipment performance through science-based codes, standards, and practices.

Fire Risks of New Technologies

Ongoing
This project supports the U.S. in assessing and mitigating fire risks from new technologies, leveraging NIST's unique fire expertise.

Fixed Point Development: Non-Metals

Ongoing
A fixed point is a reproducible reference temperature, usually either melting of freezing of a pure substance, that allows a standardized interpolation scheme for the purposes of temperature scale dissemination. Most SPRTs are long-stem designs that require immersion-type fixed points incorporating

Flammability Metrics for New Low-GWP Refrigerants

Ongoing
Objective: To develop the capability to measure and predict the burning velocity of mixtures of low-Global Warming Potential (GWP) refrigerants to allow the ranking of the mixtures in terms of their flammability, to assist in the selection and implementation of the best replacements for high-GWP

Flexible and Printed Electronics

Ongoing
Approach Developing commercial products based on organic electronics requires materials that deliver predictable and reproducible performance. One advantage of these materials is their compatibility with versatile solution processing methods. However, this advantage can lead to unpredictable

Flow Cytometry Lab

Ongoing
Current Capabilities ERF value assignment measurement service for traceable ERF value assignment to microparticles, Aseptic sorting of cell lines, and primary cells Quantitative measurements of cell surface and intracellular biomarkers by estimating antibody bound per cell Accurate enumeration of

Flow Metering and Properties for Semiconductor Process Gases

Ongoing
A type of flow meter called a mass flow controller (MFC) is used to regulate gas flow in order to produce the desired structures during chip fabrication. As semiconductor manufacturing advances, the requirements on MFC performance are increasingly strict: any process variation can reduce device

Fluctuations and Nanoscale Control (Archived)

Completed
In liquids, the motion of a nanoparticle results from a complex interplay of fluid flow, external and internal dynamics, and random Brownian motion. Each of these processes leads to fluctuations in a measured signal. Normally it is an important (and difficult) task for the experimenter is to

Fluctuations and Nanoscale Control Software (Archived)

Completed
For each file YYY.m, type "doc YYY" from the Matlab command prompt for documentation, literature references, and usage guidelines. DSigma2_Est.m Estimates the diffusion coefficient (D) and localization noise (σ 2 or "Sigma2") from single-particle tracking data. It implements the algorithms for the

Fluid Phase Nuclear Magnetic Resonance (NMR) Spectroscopy

Ongoing
In-situ vapor-liquid equilibrium (VLE). We are applying vapor-phase NMR to measure VLE in-situ . We are currently applying this methodology to industrially important systems such as refrigerants and natural gas. The most widely used refrigerants have high global warming potential. Drop-in

Fluid Suspensions and Emulsions

Ongoing
We aim to: Develop measurement capabilities to relate solution structure and viscosity through novel combinations of unique small volume, high shear rate rheometers with scattering and particle-imaging techniques. A major application of these capabilities is understanding self-association in fluids

Fluorescence Microscopy Benchmarking: Overview

Completed
A challenge in using microscopy is how to compare and validate data from different instruments, and how to determine that the microscope performance today is the same as yesterday. NIST is developing a practical, automated approach to implementing performance benchmarking methods that will

Flux Quantum Electronics

Ongoing
Quantum-Based Reference Sources The demand for wireless communications has exploded over the last 2 decades and there is no end in sight. The quest for higher bandwidth is driving the use of higher carrier frequencies in the microwave and millimeter-wave (>30 GHz) bands. However, there are no

Focused-ion-beam machining

Ongoing
Structure determines function in diverse nanotechnologies, so that making devices to control or measure nanoscale phenomena begins with control of nanoscale structure. Few fabrication systems outperform the focused ion beam to pattern nanostructures by directing ions of various elements to an