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Projects/Programs

Topic Area
Displaying 351 - 375 of 469

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

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

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

Ongoing
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

Precision Materials for Quantum Devices

Ongoing
MBE System Our fabrication system is composed of ultra-high vacuum (UHV) chambers that support the in-vacuum exchange of 75 mm wafers without exposure to air as seen in Figure 1. These chambers are: (1) a deposition chamber with electron gun deposition, UHV compatible sputter guns, in situ shadow

Precision Measurement Grants Program

Ongoing
If funding is available, one new grant in the amount of $50,000 per year will be awarded for the initial period of October 1 through September 30 of the following year. The award may be continued for up to two additional years; however, future or continued funding will be at the discretion of NIST

Precision metrology with integrated photonics

Ongoing
This project develops integrated photonics– devices based on waveguides that are fabricated in a nanoscale device layer on a silicon wafer –for the purposes of exploring nonlinear science, enabling new applications with scalable integrated photonics light sources, and enhancing classical and quantum

Precision Spectroscopy and Quantum Control of Trapped Molecular Ions

Ongoing
Spectroscopy and Quantum Control of Molecular Ions Molecules exhibit vibration and rotation of their nuclei, degrees of freedom not present in atoms, and less stringent selection rules for transitions. This creates experimental challenges and great opportunities for exploring new physics. In this

Pressure/Vacuum Calibrations

Ongoing
Piston Gauge (29010C - 29040S) This service provides calibrated secondary standard piston gauges, calibrated electronic pressure instruments, and special tests of customer supplied piston gauges. Measurements of pressure are available for submitted calibration items for the range from 10 kPa to 280

Primary optical watt radiometer (POWR)

Ongoing
The POWR, including the detector module, was completely designed by NIST to have the versatility to grow with NIST's needs and embrace new technologies. It provides optical power measurements with uncertainties of 0.01 % ( k=1), which have been verified by an intercomparison with two other cryogenic

Probing Graphene Electronic Devices with Atomic Scale Measurements

Ongoing
Two of the remarkable features of graphene that are opening avenues to multiple applications are its high transport carrier mobility and the broad tunability of its electronic properties. Graphene charge carriers can be tuned continuously from negative carriers (i.e., electrons), to positive (holes)

Prototyping Platforms for Emerging Technologies

Ongoing
Emerging technologies aim to overcome traditional memory limitations with higher density, lower power consumption, faster read/write speeds, better endurance, and lower cost [2]. Many new candidate memory elements are analog or stochastic, requiring new testing infrastructure, and the context of

Quantifying the environmental contributions to mass change

Ongoing
Experiments using two types of centimeter scale oscillators are described: the double paddle oscillator (DPO) and a commercial quartz crystal microbalance (QCM). Double Paddle Oscillator (DPO) Since mass changes are mostly on the surface of mass artifacts, we have implemented a micro-weighing sensor

Quantitative Information from Images

Ongoing
Projects: Quantifying Amount of Material through Light Measurement Fluorescence and Luminescence Imaging for Surgical Guidance Fluorescence-guided imaging devices are being used for navigation in minimally invasive surgical procedures to increase a patient’s positive clinical outcomes and shorten

Quantitative MRI

Ongoing
Future directions may focus on multimodal imaging, techniques that use MRI as either a base or as a complimentary technique. Multimodal imaging combines information from two or more imaging modalities such as MRI, computed tomography (CT), positron emission tomography (PET), and ultrasound (US)

Quantitative Nanoscale Imaging Through Artificial Intelligence

Ongoing
This project extends optical capabilities for the characterization of nanoscale devices as they increase in complexity, with challenging new materials properties, thicknesses, and length scales that challenge simplistic applications of the fundamental equations of electromagnetism. Critical

Quantum Biophotonics

Ongoing
Applying recent advances in single-photon detection along with novel data processing methods developed in the quantum optics community opens fundamentally new opportunities for faint-light metrology down to that related to just a single molecule – i.e. precisely the conditions for bio-optical
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