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.

Weston L. Tew (Fed)

Physicist

Weston Tew is an expert in the areas of thermal and electrical metrology, working in the three core areas of Temperature Metrology: Primary Thermometry, Interpolating Artifacts , and Thermometric Fixed Points.  He has experience in precision electrical measurements, low temperature thermometry, noise thermometry, non-metal fixed points, industrial thermometry, and special applications in temperature measurement. He is an author of more than 80 publications on these subjects.

Dr. Tew is a member the International Electrotechnical Commission, Working Group 5 on Temperature Sensors of the subcommittee 65B, the ASTM International Committee E20 on Temperature Measurement; The ANSI US Technical Advisory Group for the IEC, and the American Physical Society. He is a fellow of the ASTM and is the current chair of the E20.07 subcommittee on Fundamentals (of Temperature Measurement).

He has been a staff physicist in the NIST Process Measurements Division and the Sensor Science Division since 1993 where he is responsible for realization and maintenance of the ITS-90 below 84 K. His research interests are in special applications for temperature measurement, temperature standards, platinum resistance thermometry, dilute magnetic alloy thermometry, Johnson noise thermometry, fixed points, and phase equilibria.

Projects

Awards

Publications

Harmonic dependence of thermal magnetic particle imaging

Author(s)
Thinh Bui, Mark-Alexander Henn, Weston L. Tew, Megan Catterton, Solomon I. Woods
Advances in instrumentation and tracer materials are still required to enable sensitive and accurate 3D temperature monitoring by magnetic particle imaging. We

ITS10 Conference Digest

Author(s)
Christopher W. Meyer, Kathryn Miller, Weston L. Tew, Howard W. Yoon
The 10th International Temperature Symposium (ITS10) was held in Anaheim California on April 3rd to 7th, 2023. More than 180 abstracts were received and

Parallel MPI image reconstructions in GPU using CUDA

Author(s)
Klaus Natorf Quelhas, Mark-Alexander Henn, Ricardo Cordeiro de Farias, Weston L. Tew, Solomon I. Woods
This work shows that it is possible to obtain faster MPI image reconstructions by implementing the algorithms in parallel in Graphics Processing Units (GPUs)

2022 Update for the Differences Between Thermodynamic Temperature and ITS 90 Below 335 K

Author(s)
Christof Gaiser, Bernd Fellmuth, Roberto Maria Gavioso, Murat Kalemci, Vladimir Kytin, Tohru Nakano, Laurent Pitre, Anatoli Pokhodun, Patrick Rourke, Richard Rusby, Peter P.M. Steur, Weston L. Tew, Robin James Underwood, Rod White, Inseok Yang, Jintao Zhang
In 2011, a working group of the Consultative Committee for Thermometry published best estimates of the differences between thermodynamic temperature (T) and the

Patents (2018-Present)

Triple Point Immersion Cell Article

NIST Inventors
Jay Nanninga and Weston L. Tew
A triple point immersion cell article determines a triple point of a non-metallic analyte and includes: a first cryochamber including a first cryo-zone; a second cryochamber including a second cryo-zone that is: nested and disposed in the first cryochamber; and thermally isolated by the first
Created October 9, 2019, Updated December 8, 2022