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NIST Authors in Bold

Displaying 951 - 975 of 17262

SLowFlowS: A novel flow standard for semiconductor process gases

March 1, 2025
Author(s)
Jodie Gail Pope, Keith A. Gillis, Aaron Johnson, Joey Boyd, John Wright
… maximizing device throughput and yield. A national flow standard for semiconductor process gases does not exist, … and Technology (NIST) developed a novel rate-of-rise flow standard featuring long, slender tubing for the collection … temperature prediction during the filling process. This standard will enable modeling the species effects of …

What Metrology Gains With Quantized Resistance Standards

December 1, 2000
Author(s)
Randolph E. Elmquist
… of quantum metrology is expressed in modern electrical standards, primarily through the Josephson effect and the … Josephson and von Klitzing constants that relate to these standards are given in quantum theory by ideal equations KJ = … mechanical systems. It is well known that these quantum standards can provide epresentations of international …

AC-DC Transfer Standard Measurements with an AC Josephson Voltage Standard

April 2, 2007
Author(s)
Samuel P. Benz, Charles J. Burroughs, Paul D. Dresselhaus, Norman F. Bergren, Thomas E. Lipe, Joseph R. Kinard Jr., Yi-hua Tang
… converters, we have constructed an ac Josephson voltage standard system that can synthesize accurate rms voltages up … 22 mV and 220 mV ranges of a commercial thermal transfer standard. By modifying the output resistance of the … of ac-dc difference calibrations made of this transfer standard using conventional techniques. We also show progress …

Applications of Programmable Josephson Voltage Standard in Voltage Metrology

September 1, 2005
Author(s)
Yi-hua Tang
… The superior voltage stability of such a Josephson voltage standard has many applications in dc voltage metrology. This … working principle of the programmable Josephson voltage standard (PJVS) using this new array technology and few … Josephson voltage standard comparison, programmable Josephson voltage standard …

Ultracold Atoms and Precise Time Standards

September 19, 2011
Author(s)
Gretchen K. Campbell, William D. Phillips
… previously limited the performance of atomic frequency standards. Today the best laser-cooled, cesium atomic fountain, microwave frequency standards realize the SI definition of the second to a relative accuracy of ~3 X 10^(-16). Optical frequency standards, which do not realize the SI second, have even …

Spectral Responsivity Determination of a Transfer-Standard Pyroelectric Radiometer

December 1, 2002
Author(s)
George P. Eppeldauer, J Racz, Leonard M. Hanssen
… was a Si trap-detector calibrated against the primary standard cryogenic radiometer. The calibrations were repeated … been realized between 250 nm and 2.5 m with a relative standard uncertainty of less than 0.34% (coverage factor k=1). … Spectral Responsivity Determination of a Transfer-Standard Pyroelectric Radiometer …

Spectral Responsivity Determination of a Transfer-Standard Pyroelectric Radiometer

May 1, 2002
Author(s)
J Racz, George P. Eppeldauer
… was a Si trap-detector calibrated against the primary standard cryogenic radiometer. The calibrations were repeated … been realized between 250 nm and 2.5 ?m with a relative standard uncertainty of less than 0.34% (coverage factor k=1). … Spectral Responsivity Determination of a Transfer-Standard Pyroelectric Radiometer …

New Standards Working Group on Semantic Maps and More to Come!

September 30, 2022
Author(s)
Jaeho Lee, Craig I. Schlenoff
… The Robotics and Automation Society's (RAS) standards working groups continue to grow. Our current working groups are pursuing standards and guidelines in the following areas. - Autonomous … - Verification of Autonomous Systems Our newest standards working group, entitled "Standard for Semantic Maps …

Updated NIST Photomask Linewidth Standard

January 1, 2003
Author(s)
James E. Potzick, J Pedulla, Michael T. Stocker
… stable. Any replacement or duplicate NIST linewidth standard will be traceable to this same reference, and thus traceable to any other NIST length standard. Establishing such traceability requires evaluation … linewidth, metrology, photomask, standard, traceability …

Thermochemical behavior of Chlorella sp. and Chlamydomonas reinhardtii algae: Comparison of laser-driven calorimetry with thermogravimetric analysis

May 12, 2021
Author(s)
Cary Presser, Ofra Paz Tal, Tsion Ohaion-Raz, Ana Lerner, Avihai Danon, Barak Dabush, Hadar Dubkin, Ashot Nazarian
… investigate the thermochemical character of alga Chlorella sp. (TC) and alga Chlamydomonas reinhardtii (CR). … Thermochemical behavior of Chlorella sp. and Chlamydomonas reinhardtii algae: Comparison of …

Precision Phase Noise Metrology

January 1, 1991
Author(s)
F L. Walls, A J. Clements, C M. Felton, T D. Martin
… Proc. of National Conference of Standards Laboratories (NCSL) … National Conference of Standards Laboratories …

Standards Related to Prognostics and Health Management (PHM) for Manufacturing

July 7, 2014
Author(s)
Gregory W. Vogl, Brian A. Weiss, M A. Donmez
… safety, reliability, and maintainability. However, standards appear to be lacking in part for PHM system … interoperability. Accordingly, the National Institute of Standards and Technology (NIST) conducted a survey of PHM-related standards to determine the industries and needs addressed by …

Flat-Spot Measurements for an AC Josephson Voltage Standard

June 1, 2004
Author(s)
Charles J. Burroughs, Samuel P. Benz, Paul D. Dresselhaus, Yonuk Chong
… to demonstrate for the first time an ac Josephson voltage standard (ACJVS) that generates both ac and dc waveforms up … Fourier transform) spectrum analyzer and an ac/dc transfer standard, we characterize ACJVS operating margins by … Josephson, AC Voltage Standard …

Interoperability Test of IEEE 1451.5 Standard-Based Wireless Sensors

March 13, 2010
Author(s)
Kang B. Lee, Yuyin Song
… of Electrical and Electronics Engineers (IEEE) 1451 standard provides plug-and-play capability of smart … if these systems will communicate together based on a standard or specification in an operational environment. This … introduces the interoperability testing of the IEEE 1451.5 standard-based wireless sensors, including interoperability …
Displaying 951 - 975 of 17262
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