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.

Physics

Projects/Programs

Keyword

Organizational Unit

Basic Metrology: Theoretical Dosimetry and Radiation-Transport Calculations

Ongoing

The fundamental photon and charged particle interaction data and the radiation transport methods, pioneered and developed at NIST to calculate the penetration

Bilateral Comparison of Spectral Responsivity in the Vacuum-Ultraviolet

Completed

To compare the calibration capabilities for the spectral responsivity in the vacuum-ultraviolet spectral region between 135 nm and 250 nm, PTB and NIST agreed

Birefringence Properties of Optical Materials (0.12 μm – 2 μm)

Ongoing

This program is directed towards characterizing the birefringence properties of optical materials for the wavelength range 0.12 μm – 15 μm. The birefringence

Boulder Microfabrication Facility

Ongoing

Central to fulfilling many of the Division’s programmatic goals, and those of other divisions at NIST-Boulder, the Quantum Electromagnetics Division is

Calibration of the Extreme UV/X-ray Irradiance Sensor (EXIS) for the Geostationary Operations Environment Satellite R-Series Program (GOES-R)

Ongoing

Calibrations of the The Extreme ultraviolet/X-ray Irradiance Sensor (EXIS), which will be installed on the Geostationary Operations Environment Satellite R

Calibration Service: Absorbed Dose to Water and Air Kerma Calibration in Co60 Therapy Level Gamma Ray Beams

Ongoing

Three dosimetry calibration laboratories accredited by the American Association of Physicists in Medicine (AAPM) routinely perform calibrations of a large

Calibration Service: Air-Kerma Calibrations in Radiation Protection Level Cs-137 and Co-60 Gamma Ray Beams

Ongoing

The Dosimetry Group maintains and disseminates the national measurement standards for air-kerma (exposure) from 137Cs and 60Co gamma-ray beams and for absorbed

Calibration Services: Beta-Particle Sources and Instruments for Radiation Protection

Ongoing

NIST calibrates certain user-owned encapsulated beta-particle sources and certain standards laboratory transfer instruments for applications in radiation

Calibration Services: High-Dose Dosimetry

Ongoing

The activities described here support the application of high-dose, high-energy ionizing radiation for a variety of industrial processes. The largest

Calibration Services: National Air-Kerma Standard for Electronic Brachytherapy

Ongoing

The Dosimetry Group calibrates well-type ionization chambers using Xoft miniature x-ray sources, which provide low-energy x-rays (< 50 keV) for electronic

Calibration of Space Weather Observational Instruments at NIST

Ongoing

Satellite and rocket instruments for solar ultraviolet and extreme-ultraviolet observation are calibrated using synchrotron radiation at SURF III.

Calibrations: Californium Neutron Irradiation Facility

Ongoing

NIST maintains the Californium Neutron irradiation Facility (CNIF), which is an exposure facility providing fast neutrons for irradiations requiring high

Calibrations: Ionization Chambers as Secondary Standards for Activity of Radionuclides

Ongoing

Precise calibration of short-lived radioactive material is essential for nuclear medicine and power plant applications. To deliver such calibrations on-demand

Electron and Photon Absrobed-Dose-to-Water

Calibrations: Water Calorimetry Primary Standards for Absorbed Dose to Water

Ongoing

Absorbed dose is the energy imparted per unit mass by radiation to an irradiated target. The SI unit of absorbed dose is the gray (abbreviated Gy), equivalent

CODATA values of the fundamental physical constants

Ongoing

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

Cold-atom-based sensor for measuring pressure in the ultra-high vacuum domain

Ongoing

NIST is building a cold-atom vacuum sensor (CAVS) that will be able to measure pressures in the ultra-high vacuum (UHV) regime corresponding to pressures less

Comparison of Synchrotron Radiation-Based Ultraviolet Source Calibrations at PTB and NIST

Completed

Bilateral comparison of synchrotron radiation-based deuterium lamp calibrations between the Physikalisch-Technische Bundesanstalt PTB and NIST.

Comparisons (Archive): International Comparison of Pu-241 Activity

Completed

All of the plutonium isotopes, which have a very high biotoxicity, are man-made and result from various nuclear activities. Plutonium-241 is a very low-energy

Comparisons (Archive): International Comparison of Tc-99 Activity

Completed

An international measurement comparison for a 99Tc solution hosted by National Physical Laboratory (NPL) of the UK, (CCRI(II)K-2.99Tc comparison) was completed.

Comparisons: Key Comparison for Air-Kerma From Therapy Level and Radiation Protection Gamma-ray Beams

Completed

Comparisons for the national standards of air kerma from therapy level and radiation protection gamma-ray beams were conducted by the NIST and the Bureau

Controlling collisions between laser-cooled atoms using magnetic fields and nano-eV colliders

Ongoing

We investigate collisions of atoms in either micro-Kelvin gasses or in nano-colliders, where two small atomic clouds are made to collide with adjustable energy

Degradation of extreme-ultraviolet optics

Ongoing

Optical systems that operate at wavelengths in the ultraviolet (UV) and extreme-ultraviolet (EUV) are susceptible to degradation by a number of different

Designing the Nanoworld: Nanostructure, Nanodevices, and Nano-optics

Ongoing

Nano and atomic scale theory of the electronic, optical and mechanical properties of ultrasmall structures, such as semiconductor quantum dots and dopants in Si

Documentary Standards: ANSI/IEEE N42.42 Standard

Completed

The purpose of the N42 data format is to facilitate manufacturer-independent transfer of information from radiation measurement instruments for use in homeland

Dynamic Pressure

Ongoing

Manufacturing processes by their very nature require a judicious, time-dependent use of pressure and temperature to transform a base material into a valuable

NIST Headquarters
-Management Resources
--Management Resources
---Associate Director for Management Resources
----Associate Director for Management Resources - HQ
---Business Operations Office
----Boulder Business Operations Group
----Business Operations Office - HQ
----External Partnerships Group
----Operations and Customer Management Support Group
----Project Management Office
---Emergency Services Office
----Emergency Management, Preparedness and Coordination Group
----Emergency Services - HQ
----Fire Protection Group
----Security Systems and Access Control Group
---Equal Employment Opportunity and Accessibility Office
----Equal Employment Opportunity and Accessibility - HQ
---Information Services Office
----Research Library Group
----Digital Services and Publishing Group
----Information Services Office - HQ
---Fabrication Technology Office
----Fabrication Technology Office - HQ
--Office of Facilities and Property Management
---Boulder Design and Construction Division
----Boulder Design and Construction - HQ
----Facilities Improvement (Boulder) Group
----Reimbursable Work Group
----Facilities Modernization (Boulder) Group
---Gaithersburg Design and Construction Division
----Facilities Improvement (Gaithersburg) Group
----Reimbursable Work (Gaithersburg) Group
----Facilities Library, Archives, and As-Built (Gaithersburg) Group
----Construction Contract Management Group
----Facilities Modernization (Gaithersburg) Group
----Gaithersburg Design and Construction - HQ
---Gaithersburg Facility Maintenance Division
----Building Management (Gaithersburg) Group
----Operations Engineering Group
----Gaithersburg Facility Maintenance - HQ
----Facilities Enhancement Group
----Operations and Maintenance (Gaithersburg) Group
----Planning, Estimating and Materials Group
----Steam and Chilled Water Generation Plant Group
---Facilities Services Division
----Logistics Group
----Materials Management (Gaithersburg) Group
----Site Services Group
----Facilities Services Division - HQ
---Boulder Facilities Maintenance Division
----Engineering and Management Group
----Site Support Group
----Safety and Compliance Group
----Building Management and Maintenance Group
----Boulder Facilities Maintenance- HQ
----Support Services Group
---Emergency Services Division
----Police Services
----Security Systems and Access Control Group
----Fire Protection Group
----Emergency Services - HQ
----Emergency Management, Preparedness and Coordination Group
---Office of Facilities and Property Management
----Capital Asset Management and Facilities Planning Group
----OFPM Program Management Office
----Office of Facilities and Property Management - HQ
----Boulder Site Management Group
----Administrative Operations Group
----Program Office
----Reimbursement Projects Group
----Safety, Health and Compliance Group
--Office of Acquisition and Agreements Management
---Office of Acquisition and Agreements Management
----Administrative Support and Document Control Group
----Office of Acquisition and Agreements Management - HQ
----Policy and Compliance Group
----Reimbursable Agreements Coordination Office
---Grants Management Division
----Grants Management - HQ
---Acquisition Management Division
----Acquisition Management - HQ
--Office of Information Systems Management
---Applications Systems Division
----Applications Systems - HQ
---Research Services Office
----Research Services Office - HQ
---Business Systems Division
----Business Systems Division - HQ
---Information Technology Security & Networking Division
----Information Technology Security & Networking - HQ
---Identity, Credential, and Access Management Division
----Identity, Credential, and Access Management - HQ
---Customer Access and Support Division
----Customer Access and Support - HQ
---Infrastructure Services Division
----Infrastructure Services Division - HQ
---Office of Information Systems Management
----Office of Information Systems Management - HQ
---Innovation and Solutions Division
----Innovation and Solutions Division - HQ
---Platform Services Division
----Platform Services Division - HQ
--Office of Human Resources Management
---Operations and Strategic Programs Division
----Operations and Strategic Program - HQ
---Human Resources Management Office
----Human Resources Management Office - HQ
---Compensation, Recognition, and Effectiveness Division
----Compensation, Recognition, and Effectiveness - HQ
--Office of Safety, Health and Environment
---Office of Safety, Health and Environment
----Office of Safety, Health and Environment - HQ
---Gaithersburg Safety, Health and Environment Division
----Safety and Health Group
----Gaithersburg Safety, Health and Environment - HQ
----Fire and Facilities Safety Group
----Environmental Management Group
---Radiation Safety Division
----Radiation Facilities Group
----Program Development and Compliance Group
----Radiation Safety - HQ
---Boulder Safety, Health and Environment Division
----Boulder Safety, Health and Environment - HQ
--Office of Financial Resource Management
---Financial Systems and Reporting Division
----CBS Core Support Group
----CBS Feeder System Support Group
----Financial Systems and Reporting Division - HQ
----Financial Statements Group
----Data Control Group
----Reconciliations Group
---Office of Financial Resource Management
----Office of Financial Resource Management - HQ
----Internal Controls Management & Evaluation Office
----Enterprise Risk Management Office
---Finance Division
----Finance - HQ
----Financial Statements Group
----Data Control and Cost Execution Group
----Accounts Payable Purchase Orders, Grants & Foreign Payments
----Accounts Payable Contracts and Government Group
----Receivables Group
----Reconciliations Group
----Travel Group
---Financial Operations Division
----Travel Group
----Agreements Group
----Accounts Receivable Group
----Accounts Payable II Group
----Financial Operations - HQ
----Accounts Payable Group
---Budget Division
----Technical and Extramural Programs Group
----Institutional Support and Facilities Group
----Budget - HQ
----Formulation and Financial Management Group
-Laboratory Programs
--Communications Technology Laboratory
---RF Technology Division
----High-Speed Waveform Metrology Group
----Superconductive Electronics Group
----Metrology for Wireless Systems Group
----Guided Wave Electromagnetics Group
----Electromagnetic Fields Group
----RF Technology Division - HQ
---Smart Connected Systems Division
----IoT Devices and Infrastructures Group
----Networked Control Systems Group
----Smart Connected Manufacturing Systems Group
----Smart Grid Group
----Transformational Networks and Services Group
---Spectrum Technology and Research Division
----Applied Systems Metrology Group
----Fiber Sources and Applications Group
----Shared Spectrum Metrology Group
----Spectrum Technology and Research ? HQ
---Wireless Networks Division
----Internet Technologies Research Group
----Radio Access and Propagation Metrology Group
----Wireless Networks Division - HQ
----Wireless Systems Innovation and Performance Group
---Public Safety Communications Research Division
----Public Safety Communications Research Division - HQ
----Advanced Communications Research Group
----Network Operations Group
---Communications Technology Laboratory HQ
----Communications Technology Laboratory HQ Gp
----Boulder Laboratory Director Office
----Communication Test Coordination Office
--Engineering Laboratory
---Building Energy and Environment Division
----Building Energy and Environment - HQ
----Mechanical Systems and Controls Group
----Indoor Air Quality and Ventilation Group
----HVAC&R Equipment Performance Group
----Heat Transfer and Alternative Energy Systems Group
---Intelligent Systems Division
----Intelligent Systems - HQ
----Manipulation and Mobility Systems Group
----Cognition and Collaboration Systems Group
----Production Systems Group
----Sensing and Perception Systems Group
---Materials and Structural Systems Division
----Earthquake Engineering Group
----Infrastructure Materials Group
----Inorganic Materials Group
----Community Resilience Group
----Materials and Structural Systems - HQ
----Polymeric Materials Group
----Structures Group
---Engineering Laboratory Office
----Applied Economics Office
----Engineering Laboratory - HQ
----Engineering Laboratory Data, Security, Technology Group
---Fire Research Division
----National Fire Research Laboratory Group
----Wildland Urban Interface Fire Group
----Flammability Reduction Group
----Fire Research - HQ
----Engineered Fire Safety Group
----Fire Fighting Technology Group
---Systems Integration Division
----Life Cycle Engineering Group
----Process Engineering Group
----Information Modeling and Testing Group
----Systems Integration - HQ
--Information Technology Laboratory
---Applied Cybersecurity Division
----Applied Cybersecurity - HQ
----Cybersecurity and Privacy Applications Group
----National Cybersecurity Center of Excellence
----Trusted Identity Initiative Group
----National Initiative for Cybersecurity Education (NICE)
---Computer Security Division
----Computer Security - HQ
----Cryptographic Technology Group
----Secure Systems and Applications Group
----Security Components and Mechanisms Group
----Security Test, Validation and Measurement Group
----Security Engineering and Risk Management Group
---Applied and Computational Mathematics Division
----Mathematical Software Group
----Mathematical Analysis and Modeling Group
----Computing and Communications Theory Group
----High Performance Computing and Visualization Group
----Applied and Computational Mathematics - HQ
---Statistical Engineering Division
----Applied and Computational Statistics Group
----Statistical Design, Analysis, and Modeling Group
----Statistical Engineering - HQ
---Software and Systems Division
----Systems Interoperability Group
----Software Quality Group
----Software and Systems - HQ
----Cyber Infrastructure Group
----Information Systems Group
---Information Access Division
----Information Access - HQ
----Image Group
----Multimodal Information Group
----Retrieval Group
----Visualization and Usability Group
---Information Technology Laboratory Office
----Office of Computational Science for Metrology
----Office of IT Standardization
----Office of Government and Industrial Liaison
----Information Technology Laboratory Office - HQ
----Office of Chief Cybersecurity Advisor
--Laboratory Programs
---Research Protections Office
----Research Protections Office - HQ
---Standards Coordination Office
----Standards Services Group
----Standards Coordination Office - HQ
----National Voluntary Laboratory Accreditation Program (NVLAP)
---Special Programs Office
----Special Programs Office-HQ
----Law Enforcement Standards Office
---Associate Director for Laboratory Programs
----Associate Director for Laboratory Programs - HQ
--Material Measurement Laboratory
---Office of Reference Materials
----Business and Quality Management Group
----Business Application Development, Support, and Security Group
----Sales and Customer Services Group
----Publication and Web Services Group
----Office of Reference Materials - HQ
----Materials and Physical Services Group
---Office of Data and Informatics
----Office of Data and Informatics - HQ
----Data Services Group
----Data Sciences Group
---Biosystems and Biomaterials Division
----Biomarker and Genomic Sciences Group
----Cellular Engineering Group
----Biomaterials Group
----Genome-Scale Measurements Group
----Complex Microbial Systems Group
----Cell Systems Science Group
----Biosystems and Biomaterials Division - HQ
---Chemical Sciences Division
----Biochemical and Exposure Science Group
----Chemical Informatics Group
----Optical Measurements Group
----Chemical Process and Nuclear Measurements Group
----Gas Sensing Metrology Group
----Inorganic Chemical Metrology Group
----Biospecimen Science Group
----Environmental Chemical Sciences Group
----Chemical Sciences Division - HQ
----Marine Biochemical Sciences Group
----Organic Chemical Metrology Group
---Biomolecular Measurement Division
----Biomolecular Structure and Function Group
----Mass Spectrometry Data Center Group
----Bioprocess Measurements Group
----Bioanalytical Science Group
----Biomolecular Measurement Division - HQ
----Applied Genetics Group
---Applied Chemicals and Materials Division
----Applied Chemicals and Materials Division - HQ
----Thermodynamics Research Center Group
----Thermophysical Properties of Fluids Group
----Nanoscale Reliability Group
----Fluid Characterization Group
----Fatigue and Fracture Group
---Materials Science and Engineering Division
----Thermodynamics and Kinetics Group
----Polymers Processing Group
----Mechanical Performance Group
----Polymers and Complex Fluids Group
----Materials Science and Engineering Division - HQ
----Functional Polymers Group
----Functional Nanostructured Materials Group
---Materials Measurement Science Division
----Security Technologies Group
----Surface and Trace Chemical Analysis Group
----Nanomechanical Properties Group
----Nano Materials Research Group
----Materials Structure and Data Group
----Microscopy and Microanalysis Research Group
----Synchrotron Science Group
----Materials Measurement Science Division - HQ
----Materials for Energy and Sustainable Development Group
---Material Measurement Laboratory Office
----The Material Measurement Laboratory Office of Operations Group
----Material Measurement Laboratory - HQ
----Genome-Scale Measurement Group
--NIST Center for Neutron Research
---NIST Center for Neutron Research
----Research Facility Operations Group
----NIST Center for Neutron Research - HQ
----Reactor Operations and Engineering Group
----Neutron-Condensed Matter Science Group
--Physical Measurement Laboratory
---Microsystems and Nanotechnology Division
----Biophysical and Biomedical Measurement Group
----Microsystems and Nanotechnology - HQ
----Nanostructure Fabrication and Measurement Group
----Photonics and Optomechanics Group
---Time and Frequency Division
----Atomic Devices & Instrumentation Group
----Atomic Standards Group
----Ion Storage Group
----Optical Frequency Measurements Group
----Time Realization and Distribution Group
----Time and Frequency Metrology Group
----Time and Frequency - HQ
---Quantum Physics Division
----Quantum Physics - HQ
---Radiation Physics Division
----Dosimetry Group
----Radioactivity Group
----Radiation Physics - HQ
----Neutron Physics Group
---Sensor Science Division
----Ultraviolet Radiation Group
----Sensor Science - HQ
----Dimensional Metrology Group
----Thermodynamic Metrology Group
----Remote Sensing Group
----Optical Radiation Group
----Fluid Metrology Group
----Surface and Interface Metrology Group
---Applied Physics Division
----Advanced Microwave Photonics Group
----Applied Physics - HQ
----Faint Photonics Group
----Quantitative Nanostructure Characterization Group
----Quantum Devices Group
----Molecular and Bio-Photonics Group
----Optoelectronic Manufacturing Group
----Magnetic Imaging Group
----Quantum Nanophotonics Group
----Sources and Detectors Group
---Quantum Measurement Division
----Quantum Optics Group
----Mass and Force Group
----Quantum Measurement - HQ
----Laser Cooling and Trapping Group
----Fundamental Electrical Measurements Group
----Applied Electrical Metrology Group
----Atomic Spectroscopy Group
---Quantum Electromagnetics Division
----Quantum Processing Group
----Quantum Sensors Group
----Quantum Electromagnetics - HQ
----Nanoscale Spin Dynamics Group
----Microfabrication Group
----Spin Electronics Group
----Magnetics Group
---Nanoscale Device Characterization Division
----Atom Scale Device Group
----Nanoscale Device Characterization Division - HQ
----Alternative Computing Group
----Nanoscale Spectroscopy Group
----Advanced Electronics Group
----Nanoscale Processes and Measurements Group
---Physical Measurement Laboratory Office
----Boulder Microfabrication Facility
----Physical Measurement Laboratory- HQ
----PML Information Office
----Center for Nanoscale Science and Technology
----Office of Weights and Measures
----Boulder Laboratory Director Office
-Innovation & Industry Services
--Office of Advanced Manufacturing
---Microelectronics Manufacturing Division
----Microelectronics Manufacturing ? HQ
----Microelectronics Strategy and Enterprise Group
----Semiconductor Coordination Group
----Semiconductor Operations Group
----Workforce and Equity Development Group
---Office of Advanced Manufacturing
----Office of Advanced Manufacturing - HQ
---Partnerships and Outreach Division
----Communications and Marketing Group
----Education and Workforce Development Group
----Partnership Engagement Group
----Partnerships and Outreach - HQ
----Technology Hubs Development Group
---Policy and Strategy Division
----Analysis and Benchmarking Group
----Policy and Strategy ? HQ
----Strategic Planning Group
---Program Operations Division
----Competitions Group
----Institute and Program Management Group
----Performance Management Group
----Program Operations - HQ
--Baldrige Performance Excellence Program
---Baldrige Performance Excellence Program Office
----Award Process Group
----Director's Office, Baldrige Performance Excellence Program
----Administrative Support/Electronic Information Group
----Outreach and Communications Group
----Publications Management Group
----Workforce Development Group
--Innovation & Industry Services
---Associate Director for Innovation & Industry Services
----Associate Director for Innovation & Industry Services - HQ
---Advanced Manufacturing Office
----Advanced Manufacturing Office - HQ
---Economic Analysis Office
----Economic Analysis Office - HQ
---Technology Partnerships Office
----Technology Partnerships Office - HQ
---Technology Innovation Program Office
----Technology Innovation Program Office - HQ
--Hollings Manufacturing Extension Partnership Program
---Network Learning and Strategic Competitions Division
----Network Learning and Strategic Competitions - HQ
---Regional and State Partnerships Division
----Regional Management Group
----Regional and State Partnerships - HQ
---External Affairs and Performance Division
----External Affairs and Performance - HQ
----Program Evaluation and Economic Research Group
----Marketing and Communications Group
---Finance Management and Center Operations Division
----Finance Management and Center Operations - HQ
----Center Operations and Financial Management Group
---Extension Services Division
----Extension Services - HQ
---Hollings Manufacturing Extension Partnership Program Office
----Hollings Manufacturing Extension Partnership Program - HQ
-Director's Office
--Director's Office
---Ombuds Office
----Ombuds Office - HQ
---Public Affairs Office
----Media Liaison Group
----Video and Digital Media Production Group
----Public Affairs Office - HQ
----Internal Communications and Inquiries Group
----Conference Program and Audiovisual Services Group
----Boulder Meetings Support and Services Group
----Web Content Development Group
---Program Coordination Office
----Program Coordination Office - HQ
---Director's Office
----Director's Office - HQ
----Onboarding Group
---Congressional and Legislative Affairs Office
----Congressional and Legislative Affairs Office - HQ
---Human Subjects Protection Office
----Human Subjects Protection Office - HQ
---Management and Organization Office
----Management and Organization Office- HQ
---International and Academic Affairs Office
----International and Academic Affairs Office - HQ