Projects/Programs

Displaying 1 - 13 of 13

Acoustic Thermometry

Completed

Data from the NIST acoustic thermometer will form an improved basis for the equations used with platinum resistance thermometry, which is the primary mechanism to disseminate accurate temperature standards. Objective: To obtain measurements of thermodynamic temperature in the range between 273 K and

Atomic Thermometers

Ongoing

Approach 1 Compact Blackbody Radiation Atomic Sensor (CoBRAS) The Compact Blackbody Radiation Atomic Sensor (CoBRAS) uses a thermal vapor of atoms excited by a single laser to detect BBR. From the optically excited state, atomic population is transferred to other, nearby excited states by a

Cryogenics

Ongoing

Almost all the devices developed by the Quantum Sensors Group work at temperatures below liquid helium. Sometimes, it is necessary to develop specialized cryogenics to test the devices, or to facilitate their dissemination to outside users. The cryogenics team also aims to make refrigerators more

Deployable Doppler Thermometry

Ongoing

Accurate temperature measurements are essential to many industrial processes, including petrochemical or pharmaceutical production and nuclear power generation. Typical process control thermometers, such as resistance temperature detectors, are known to drift over time and degrade when subject to

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

Johnson Noise Thermometry

Completed

The NIST Gaithersburg JNT project produces data useful for verification of the International Temperature Scale of 1990 (ITS-90) over a temperature range from 500 K to 930 K. This range overlaps those covered by other thermodynamic methods, most notably the upper-most range of Acoustic Thermometry

Metrology for Multi-Physics AM Model Validation

Completed

Objective To provide reference data for the validation of multi-physics models of metal additive manufacturing processes to enable improvement of AM process models and more rapid and predictable process development for AM production by manufacturers. What is the Technical Idea? The Metrology for

Metrology for Real-Time Monitoring of Additive Manufacturing

Completed

Objective To develop and disseminate metrology methods, tools, data, and standards applied to in-situ monitoring of AM processes, such that manufacturers and their customers can accurately and precisely determine the quality of the fabrication process and resulting parts. What is the Technical Idea

Nanocalorimetry Measurements

Ongoing

Accurate thermodynamic measurements are essential to understand fundamental properties of materials, providing direct and quantifiable insight into the thermodynamics of thin film reactions and phase transitions. Going forward, new classes of materials may only be synthesized as thin films, a scale

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

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

Illustration of Thermal MagIC assembly with coils

Thermal MagIC: An SI-Traceable Method for 3D Thermal Magnetic Imaging and Control

Ongoing

Temperature affects every physical system, every chemical reaction, and every biological process. Although imaging within materials and living things with X-rays and magnetic resonance is now routine, no general method to measure and regulate temperature throughout a 3D volume currently exists. We

Thermometry

Ongoing

The NIST Thermodynamic Metrology Group supports industry and advances measurement science through an extensive suite of thermometry calibration services as well as research projects aimed at improving the utility for the International Temperature Scale. We also develop guidelines, and contribute to

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