Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Projects/Programs

Topic Area
Displaying 776 - 800 of 1671

Laser Stabilization and Coherence with Optical Resonators

Ongoing
Coherent laser interrogation of the narrowband electronic ‘clock’ transition is required to realize the very high spectroscopic resolution that make optical clocks so precise. At the same time, phase fluctuations in the laser interrogation can compromise the frequency stability of the optical clock...

Laser-wavelength conversion with nonlinear photonics

Ongoing
Many sophisticated technologies, including detection and characterization of biological samples, quantum sensing of magnetic and electric fields, time standards based on atomic clocks, and precision metrology, demand versatile laser sources spanning a broad range of wavelengths. Nonlinear optics...

Latent Print AFIS Interoperability

Ongoing
Why is AFIS Interoperability Important? Automated fingerprint identification systems (AFIS) allow latent print examiners to search fingerprint files and to transmit fingerprint images. However, examiners often lack the technological ability to access AFIS in neighboring jurisdictions. In addition...

Lead-Free Solder

Completed
The U.S. microelectronics industry has clearly articulated the measurement needs for lead-free solders, and for solderability and assembly. For example, the urgency for materials data for lead-free solders has been specified in the 1997 IPC, 1999 International Technology Roadmap for Semiconductors...

Lead-Free Surface Finishes for Electronic Components: Tin Whisker Growth

Completed
Tin is widely used as a coating in the electronics industry because it provides excellent solderability, ductility, electrical conductivity, and corrosion resistance. Unfortunately, tin whiskers often grow spontaneously from pure tin electrodeposits and short-circuit finely pitched electrical...

SI Length and Traceability

Ongoing
Laser interferometry, which measures distances in terms of the wavelength of light, provides the backbone of top-level length metrology in industry and science. This project develops techniques to facilitate the tie between interferometer-based length measurements and the SI definition of length (in...

Light-matter interactions in Semiconductor Nanostructures

Ongoing
We investigate the interaction of light with semiconductor-based nanostructures. We extend concepts of entanglement and coherence in atomic physics to our solid-state systems. Our devices are based on semiconductors, like GaAs. We use InAs quantum dots (QDs) in GaAs as artificial atoms; they have...

Lightweight Cryptography

Ongoing
For more information regarding the Lightweight Cryptography, please visit the Computer Security Resource Center (CSRC).

Linguistic and AI Support for Collective Standards Development

Ongoing
Standards are increasingly part of complex digital ecosystems which may span dozens of documents, several different domains of science and engineering, and hundreds of contributors from different countries and backgrounds. It can be challenging to ensure that standards are consistent, meet...

Live Cell Imaging of Induced Pluripotent Stem Cell Populations

Ongoing
As part of our program in Cell Biology , our live cell image program supports the advancement of induced pluripotent stem cell (iPSC) technology in three ways: 1) Identification of process control measurements: A critical component to the translation of iPSCs into therapeutic applications is to...

LMR and LTE Interfacing

Ongoing
The Wireless Broadband Technology Demonstrator is part of an effort of DHS OIC to evaluate how wireless broadband technology can be integrated with existing LMR and other first responder and law enforcement communications.PSCR provides independent verification, testing, and support on behalf of DHS...

LNP-RNA Research Grade Test Material

Ongoing
The currently planned LNP/RNA material (designated RGTM 10240) will include a fragment of the SARS-CoV-2 genome that is approximately 4 kb in length. This fragment was previously included (in unencapsulated form) as “Fragment 1” of NIST RGTM 10169. The RNA fragment is not designed for cell-based...

Local Control

Ongoing
In March 2012, the National Public-Safety Telecommunications Council (NPSTC) Local Control Task Group published a report titled, “Local Control in the Nationwide Public Safety Broadband Network”. The NPSTC report identified four areas where users will need some type of control in respect to first...

Local and Dynamic Quality Priority and Pre-emption

Ongoing
The Middle Class Tax Relief and Job Creation Act of 2012 (H.R. 3630) appropriated $7 billion for the establishment of a nationwide interoperable public safety broadband network under FirstNet, an independent authority in the National Telecommunications and Information Administration (NTIA). FirstNet...

Long Wavelength Sensors and Applications

Ongoing
Our project designs and micro-fabricates custom devices that achieve sensitivity at fundamental limits and are based on the principles of superconductivity. We often work in large collaborations to apply these devices to challenging measurements of high scientific interest, such as those which...

Low Temperature Regenerator and Pulse Tube Losses

Ongoing
All-digital radio communication between the various forces of the U.S. military is required to improve communications to the level needed in the near future. Such communication requires analog-to-digital converters of speeds only possible with low temperature superconducting electronics. The...

Low-Complexity Optimized MIMO Receiver

Completed
Transmit diversity is a very significant characteristic which a Multiple-Input Multiple-Output (MIMO) communication system possesses. Nevertheless, due to the size of a mobile phone, the 10λ distance between two antennas allowing each channel to be independent is difficult to fulfill. Against this...

A Low-Cost Robot Science Kit for Education

Ongoing
Despite its low cost, Legolas has been demonstrated for machine learning-driven hypothesis design, discovery, and validation. For the last four years, Legolas has been used in hands-on courses at the University of Maryland to teach next-generation workforce skills, including ML, control systems...

AI for Low-Field MRI

Ongoing
The overall goal of this project is to use an AI network to overcome the low Signal-to-Noise-Ratio (SNR) of low-field MRI, so that we can produce quantitative ADC measurements. This will be accomplished by a collaborative effort imaging with a low-field Hyperfine instrument, with the physicists...

Low-GWP Refrigerants for High-Efficiency HVAC&R Equipment

Completed
Objective - To develop heat transfer and system performance information that will assist in the selection and implementation of the best replacements for high-GWP hydrofluorocarbon (HFC). What is the new technical idea? Most of the currently used HFC refrigerants will be phased out or phased down...

Low-Phase Noise Frequency Synthesis

Ongoing
Frequency synthesis plays an essential role in virtually all present-day commercial, industrial, and military technologies. State-of-the-art low-noise frequency synthesis is a crucial technical asset to high-resolution imaging and radar, high-speed telecommunications, and efficient management of the...

Lunar Spectral Irradiance (LUSI)

Ongoing
Earth observing satellite sensors were once the exclusive domain of large satellite platforms used by government agencies for the purpose of national security, defense, weather prediction and disaster mitigation. These satellites typically carry onboard radiometric calibrators that along with pre...

Machine Learning Driven Self-correcting Autonomous Metrology Systems (SAMS)

Ongoing
While NIST-on-a-Chip has produced quantum and nanophotonic measurement solutions that can significantly reduce calibration frequency, their transition from laboratory to marketplace depends on seamless integration into user workflows. Our research addresses a fundamental challenge: maintaining...

Machine Learning Fluid Equations of State

Ongoing
Understanding the thermodynamic properties of fluids and fluid mixtures is of central importance in many fields of science and engineering ranging from medicine to consumer products. The nature of the particles in a fluid can vary greatly depending on the type of interactions present, e.g., dipole...
Was this page helpful?