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Projects/Programs

Keyword

Organizational Unit

Optical Radiation Metrology and Standard Radiometers

Ongoing

Radiometric, radiance temperature, photometric, and color scales have been realized based on the spectral responsivity of standard detectors and radiometers. These reference responsivity scales have been transferred to other NIST calibration facilities to realize and maintain these detector-based...

Optical scattering from surfaces

Ongoing

Light Scattering Ellipsometry: The polarization of scattered light can often indicate the source of that scattered light. Using Light Scattering Ellipsometry, whereby the polarization of light scattered into directions out of the plane of incidence is measured for a fixed incident polarization...

Optimal Diffusion Coefficient Estimation in Single-Particle Tracking (Archived)

Completed

In a typical single-particle tracking experiment, optical images of diffusing particles are recorded with a CCD camera, and the series of frames obtained from the camera is analyzed to extract a trajectory. In the simplest case of free Brownian motion, the trajectory is subsequently analyzed to...

Optoelectrical Characterization of Nanostructured Photovoltaic Materials and Devices

Completed

In a typical PV cell, light absorption creates excitons that separate into charge carriers under the influence of the electric field of a p-n junction. The free carriers must leave the PV device, reaching and crossing their respective contacts, to generate useful power. Usually, only part of the...

Optofluidic Cytometry

Ongoing

Flow cytometers are commercial instruments that provide rapid multiparameter measurements of single cells, which makes them indispensable in basic research and clinical studies of diseases and drug therapies. Measurements of cellular attributes can include indicators of cell size and shape and well...

Optical microscope image of a silicon nitride trampoline pressure sensor

Optomechanical Pressure Sensing

Ongoing

Measurement and control of high-vacuum pressure is important for many industrial processes, particularly semiconductor fabrication. Typical process pressure monitors are known to lose accuracy over time and so require repetitive calibration. Pressure transfer standards that support high-vacuum and...

Overcoming Barriers: Nanoscale Interface Metrology and Electrical Characterization for Advanced Electronics

Ongoing

“The interface is the device,” Herbert Kroemer, 2000 Nobel Laureate. This is even more true today, twenty-three years later, when device dimensions are measured in numbers of atoms rather than numbers of micrometers. Historically, interface problems in the semiconductor industry have been addressed...

OWM Laboratory Metrology Training for mass metrology

OWM Training Program: Metrology, Metrication, and More!

Ongoing

OWM offers a variety of in-person, online, and "blended" training classes and materials that provide guidance instruction on national legal metrology standards, weights and measures field inspection procedures, and laws and regulations related to packaging and labeling. OWM provides technical...

Phase and Amplitude Noise Calibration Services

Ongoing

The primary responsibility of the Phase Noise Metrology Group is to develop and provide calibration services for industrial, military, and commercial organizations to support the core mission of NIST. The PM and AM noise measurements require traceability and certification of devices such as phase...

Measurement device for signals in the W band (75-110 GHz)

Phase and Amplitude Noise Metrology

Ongoing

The group provides high-precision measurement of electromagnetic signals in the radio-frequency, microwave and optical range. These measurements include phase noise, amplitude noise and perturbations due to vibration and temperature. Such precision measurements support high-value applications such...

The Photoforce Project

Ongoing

Traditional power meters measure the power of a laser beam by absorbing its energy. Radiation pressure (photon momentum) permits the measurement of a beam’s power by “absorbing” its momentum and reflecting its energy. Light reflecting from a mirror causes a force that is proportional to its optical...

Photometry

Ongoing

The development of revolutionary energy-efficient solid-state lighting (SSL) products has sparked the need for new performance metrics and measurement methods to address their unique construction and operating conditions. NIST has been working closely with the U.S. Department of Energy (DOE)...

Dosimetry_ResearchandMetrology_PhotonAbsorbedDose_pic_Tosh

Photon Absorbed-Dose-to-Water Primary Standards

Ongoing

Modeling of accumulated-dose dependence in the heat defect of H2/O2 exhibits expected peak behavior in qualitative agreement with experiment, and is being further refined for purposes of reducing the associated relative uncertainty from its present value of 0.3 %. Studies to quantify the possible...

Photon Drag in Metal Films

Ongoing

The photon-drag (PD) effect is the rectified electrical current in a medium generated by radiation pressure. That is, the optical force delivered to an illuminated metal results in a measurable voltage across the film (Figure, left). For decades, this effect in metals has been understood in terms of...

Photonic Dosimetry

Ongoing

With this effort, NIST is responding to industry needs for traceable, measurement solutions that can resolve spatial variations of absorbed dose at the level of individual components on a silicon wafer or bacteria on surgical instruments. Presently, there is only limited traceability to national...

Schematic of quantum entangled molecules or nanoparticles in dual cavity system.

Photonic Quantum State Imaging Metrology

Ongoing

Fundamental understanding of quantum behavior of single molecules, which is a favorable candidate for quantum information processing technologies, has advanced gradually, relying on empirical studies mostly. This requires a measurement platform to study fundamental quantum characteristics in single...

Planar absolute cryogenic radiometer with multiwall vertically-aligned carbon nanotubes. Superconducting transition-edge sensor. Fully-lithographic fabrication.

Photonic Radiometry

Ongoing

Meeting the needs of the photonics industry and anticipating emerging technologies requires investigation and development of improved measurement methods and instrumentation. This project develops state-of-art, absolute microfabricated thermal detectors with absorber coatings consisting of carbon...

Photonic Thermometry

Ongoing

Why do we need reliable temperature metrology? Temperature, the second most measured physical property after time and frequency, is indispensable to innumerable industries, military services, medicine, climate, and weather forecasts – precise, accurate, and rapid temperature metrology enables much...

Physics and Hardware for Intelligence

Ongoing

Our work in this area can be separated into two categories: conceptual and experimental. Please read our publications linked below for more information. Experimental: Our latest generation of synaptic circuits are described in a 2024 paper published in APL Machine Learning. These circuits are our...

Pico-Watt ACR

Ongoing

Design Parameters for Improved ACR Sensitivity An absolute cryogenic radiometer (ACR) is an electrical substitution instrument for calibrating optical power. A bolometer designed so that virtually all incident optical power is absorbed by the radiometer, an ACR allows for absolute calibration...

Plasma Metrology

Completed

Plasma, the fourth state of matter, is common in both nature (e.g., lightning, the earth's ionosphere, stellar objects) and in modern technology (e.g., semiconductor processing, lighting, plasma televisions, medical equipment). Yet despite this ubiquity, the plasma state is still a wide open...

Platform for Realizing Integrated Molecule Experiments (PRIME)

Ongoing

Blackbodies realize a clear relationship between radiated power and temperature through Planck’s law. While a reliable instrument for temperature and power calibrations, blackbodies are afflicted with a plethora of systematics (e.g., non-ideal emissivity, propagation loss, temperature gradients...

Portable Field Test Standard for Evaluation of Hydrogen Gas Dispensers

Completed

This project provides a metrological tool and standards supporting the fair trade of hydrogen gas as a vehicle fuel of the future. Objective(s): The Fluid Metrology Group (FMG) and the Office of Weights and Measures (OWM) collaborated in designing, constructing, and testing a hydrogen gas dispenser...

Portable Optical Lattice Clock

Ongoing

Exploiting their very high precision, atomic clocks today are used extensively in demanding timekeeping applications. These include a variety of navigation, communication, and remote sensing and imaging applications. The very best atomic clocks today, optical clocks, are among the most precise...

Precision Electro-Mechanical Experiments (PREME)

Ongoing

NIST-4 Kibble Balance Previously called ‘the Electronic Kilogram’ Project, a major component of PREME is the realization of SI unit of mass, the kilogram, using the NIST-4 Kibble balance, the fourth generation of Kibble balances at NIST. This is accomplished through a high-accuracy comparison of...

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NIST Headquarters
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---Building Energy and Environment Division
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Advanced communications
-Open Radio Access Network (Open-RAN)
-Quantum communications
-Spectrum sharing
-Wireless (RF)
Artificial intelligence
-Agentic AI
-AI measurement and evaluation
-Autonomous systems
--Automated vehicles
--Autonomous laboratories
-Applied AI
-Fundamental AI
-Hardware for AI
-Machine learning
-Trustworthy and responsible AI
Biotechnology
-Bioeconomy
--Biological data
-Bioimaging
-Bioinformatics
-Biomanufacturing
-Biomaterials
-Biometrology
-Biosecurity
--Biosurveillance
--Genomic cybersecurity
--Nucleic acid sequence screening
-Cell measurements
-Engineering / synthetic biology
--Biofabrication
--Cell-free systems
--Genome engineering
--Protein engineering
-Gene delivery systems
-Genome editing
-Genomics
-Glycomics
-Metabolomics
-Microbial measurements
-Proteomics
Buildings and construction
-Building codes and standards
-Building retrofit
-Building control systems
-Building damage and repair
-Building economics
-Building materials
-Energy efficiency
-Heating, ventilation and air conditioning equipment
-Indoor air quality
-Structural engineering
-Thermal comfort
Chemistry
-Analytical chemistry
-Chemical engineering and processing
-Chemical thermodynamics and chemical properties
-Molecular characterization
-Theoretical chemistry and modeling
-Thermochemical properties
Electronics
-Electromagnetics
-Flexible electronics
-Magnetoelectronics
-Optoelectronics
-Organic electronics
-Semiconductors
-Sensors
-Superconducting electronics
Energy
-Alternative energy
-Conventional energy
-Electric power / smart grid
-Fuels
Environment
-Air / water / soil quality
-Climate measurements
-Environmental health
-Greenhouse gas measurements
-Marine science
-Sustainability
Fire
-Fire detection
-Fire dynamics and science
-Fire fighting
-Fire modeling
-Fire risk reduction
-Materials flammability
-Structural fire resistance
-Wildland urban interface fire
Forensic science
-Digital evidence
-Evidential statistics
-Drugs and toxicology
-Firearms and toolmarks
-Forensic biometrics
-Forensic genetics
-Forensic quality assurance
-Trace evidence
Health
-Biopharmaceuticals
-Cell and gene therapy
-Clinical diagnostics
--Cancer
--Medical imaging
-Food and nutrition
-Human microbiome
-Precision medicine
-Regenerative medicine and advanced therapy
--Flow cytometry
Information technology
-Biometrics
-Cloud computing and virtualization
-Complex systems
-Computational science
-Conformance testing
-Cyber-physical systems
--Smart cities
-Cybersecurity and privacy
--Cryptography
--Cybersecurity education and workforce development
--Cybersecurity measurement
--Identity and access management
--Privacy engineering
--Risk management
--Securing emerging technologies
--Trustworthy networks
--Trustworthy platforms
-Data and informatics
--Human language technology
--Information retrieval
--Natural language processing
-Digital twins
-Federal information processing standards (FIPS)
-Health IT
-Internet of Things (IoT)
-Interoperability testing
-Library and information science
-Location based services
-Mobile
-Networking
--Mobile and wireless networking
--Network management and monitoring
--Network modeling and analysis
--Network security and robustness
--Network test and measurement
--Next generation networks
--Protocol design and standardization
--Software defined and virtual networks
-Software research
--Software testing
-Usability and human factors
--Accessibility
-Video analytics
-Virtual / augmented reality
-Visualization research
-Voting systems
Infrastructure
Manufacturing
-Additive manufacturing
-Factory communications
-Factory operations planning and control
-Interoperability in manufacturing
-Machining
-Manufacturing economics
-Manufacturing quality assurance
-Manufacturing systems design and analysis
-Monitoring, diagnostics and prognostics
-Process improvement
-Process measurement and control
-Product data
-Robotics
--Agility and adaptability
--Collaborative robots
--Dexterous grasping
--Manipulation
--Mobility and industrial autonomous vehicles
--Navigation / actuation / control
--Sensing and perception
-Supply chain
-Sustainable manufacturing
-Systems engineering
-Systems integration
-Technology commercialization
Materials
-Ceramics
-Composites
-Concrete / cement
-Materials characterization
--Composition and structure
--Mechanical properties
--Thermal properties
-Metals
-Modeling and computational material science
-Polymers
-Superconductors
Mathematics and statistics
-Experiment design
-Image and signal processing
-Modeling and simulation research
-Numerical methods and software
-Statistical analysis
-Uncertainty quantification
Metrology
-Amount of substance
-Dimensional metrology
-Electrical / electromagnetic metrology
-Flow metrology and rheology
-Force metrology
-Humidity metrology
-Ionizing radiation metrology
-Mass metrology
-Metric
-Optical / photometry / laser metrology
-Pressure and vacuum metrology
-Thermometry metrology
-Time and frequency metrology
-Weights and measures
Nanotechnology
-Nanobiotechnology
-Nanochemistry
-Nanoelectronics
-Nanofabrication / manufacturing
--Lithography
--Self-assembly
-Nanofluidics
-Nanomagnetics
-Nanomaterials
-Nanomechanics
-Nanometrology
-Nanophotonics
-Nanophysics
-Nanoplasmonics
Neutron research
Performance excellence
-Assessment tools and services
-Baldrige award
-Baldrige examiners
-Baldrige framework and criteria
-Best practices
-Leadership development
Physics
-Atomic / molecular / quantum
-Biological physics
-Condensed matter
-Electron physics
-Magnetics
-Nuclear physics
-Optical physics and communications
-Quantum information science
-Radiation
-Spectroscopy
-Thermodynamics
-Time and frequency
Public safety
-Chemical / Biological / Radiological / Nuclear / Explosives (CBRNE)
-First responder preparedness
-Law enforcement
-Public safety communications research
-Response robots
Resilience
-Community resilience
--Recovery
--Resilience metrics
-Disaster and failure studies
-Earthquake risk reduction
--Functional recovery
-Resilience economics
-Resilient materials
-Windstorm impact reduction
Standards
-Accreditation
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Technology transfer
Transportation
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