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Search Publications

NIST Authors in Bold

Displaying 801 - 825 of 1005

Sub-Nanometer Wavelength Metrology of Lithographically Prepared Structures: A Comparison of Neutron and X-Ray Scattering

June 1, 2003
Author(s)
Ronald L. Jones, T Hu, Eric K. Lin, Wen-Li Wu, D M. Casa, Ndubuisi George Orji, Theodore V. Vorburger, P J. Bolton, Z Barclay
The challenges facing current metrologies based on SEM, AFM, and light scatterometry for technology nodes of 157 nm imaging and beyond suggest that the development of new metrologies capable of routine measurement in this regime are required. We provide

Mean Recurrence Intervals of Ultimate Wind Loads

July 1, 1998
Author(s)
Emil Simiu, A N. Heckert, T Whalen
The attention of wind engineers and extreme value climatologists has been focused in the last few decades on estimates of basic windspeeds, that is, wind speeds with 50 year or 100 year mean recurrence intervals (MRIs). Recently, however, efforts have been

Atomic vapor cells for miniature frequency references

May 8, 2003
Author(s)
Svenja A. Knappe, V. Velichansky, Hugh Robinson, Li-Anne Liew, John M. Moreland, John Kitching, Leo W. Hollberg
We report on the fabrication of millimeter-sized vapor cells and their performance on atomic clocks based on coherent population trapping (CPT). We discuss two fabrication techniques, the first one based on hollow-core pyrex fibers, fused with a CO 2 laser

Results of The 2015 NIST Language Recognition Evaluation

September 12, 2016
Author(s)
Hui Zhao, Desire Banse, G R. Doddington, Craig Greenberg, Audrey N. Tong, John M. Howard, Alvin F. Martin, Jaime Hernandez-Cordero, Lisa Mason, Douglas A. Reynolds, Elliot Singer
In 2015, NIST conducted the most recent in an ongoing series of Language Recognition Evaluations (LRE) meant to foster research in language recognition. The 2015 Language Recognition Evaluation (LRE15) featured 20 target languages grouped into 6 language

Photomask Metrology in the Era of Neolithography

February 1, 1997
Author(s)
James E. Potzick
The appearance of smaller photomask feature sizes, high density patterns, and optical enhancements such as phase shifters and OPC features, and the increasing importance of subresolution mask characteristics, can render traditional mask metrology

Characterization of Monostatic Base Stations Sensing Resolution Using 5G Reference Signals

July 1, 2025
Author(s)
Tanguy Ropitault, Steve Blandino, David Griffith, Thao Nguyen, Anirudha Sahoo, Nada Golmie
Sensing is poised to be a crucial feature in 6G, leading 3GPP to integrate sensing capabilities into the 5G New Radio (NR) framework. Significant progress has been made, but extensive work remains in defining architectures, protocol operations, and

Indoor Carbon Dioxide Metric Analysis Tool

June 14, 2022
Author(s)
Andrew K. Persily, Brian Polidoro
Indoor carbon dioxide has been used for decades to evaluate indoor air quality (IAQ) and ventilation. However, many applications of CO2 as an indicator or metric of IAQ or ventilation reflect a lack of understanding of the relationship between indoor CO2

Status Report on the First Round of the Additional Digital Signature Schemes for the NIST Post-Quantum Cryptography Standardization Process

October 24, 2024
Author(s)
Gorjan Alagic, Maxime Bros, Pierre Ciadoux, David Cooper, Quynh Dang, Thinh Dang, John M. Kelsey, Jacob Lichtinger, Carl A. Miller, Dustin Moody, Rene Peralta, Ray Perlner, Angela Robinson, Hamilton Silberg, Daniel Smith-Tone, Noah Waller, Yi-Kai Liu
… and were accepted as First-Round Candidates on July 17, 2023, marking the beginning of the First Round of the …

A network of cooler white dwarfs as infrared standards for flux calibration

October 1, 2024
Author(s)
Abbigail Elms, Nicola Gentile Fusillo, Pier-Emmanuel Tremblay, ralph bohlin, Mark Hollands, Snehalata Sahu, Mairi O'Brien, Susana Deustua, Tim Cunningham
… below this level in the IR range. We present a network of 17 cooler DA white dwarfs with &#55349;eff < 20 000K as …

Tuning Arrays with Rays: Physics-Informed Tuning of Quantum Dot Charge States

September 28, 2023
Author(s)
Joshua Ziegler, Florian Luthi, Mick Ramsey, Felix Borjans, Guoji Zheng, Justyna Zwolak
… is comparable when testing with simulated data, at 95.5(5.4) %, and only slightly worse for off-line experimental tests, with an average of 89.7(17.4) % (median 97.5 %). It is noteworthy that the high …

U.S. population data for 94 identity informative SNP loci

May 15, 2023
Author(s)
Kevin Kiesler, Lisa Borsuk, Becky Steffen, Peter Vallone, Katherine Gettings
The U.S. National Institute of Standards and Technology analyzed a set of 1036 samples representing four major U.S. population groups (African American, Asian American, Caucasian, and Hispanic) with the ForenSeq DNA Signature Prep Kit, DNA primer mix B

Noncryogenic Air Separation using Aluminum Formate Al(HCOO) 3 (ALF)

May 3, 2023
Author(s)
Dinesh Mullangi, Hayden Evans, Taner N. Yildirim, Yuxiang Wang, Zeyu Deng, Zhaoqiang Zhang, Thuc Mai, Fengxia Wei, John Wang, Angela R. Hight Walker, Craig Brown, Dan Zhao, Pieremanuele Canepa, Anthony K. Cheetham
Separating oxygen from air to create oxygen-enriched gas streams is a process that is significant in both industrial and medical fields. However, the prominent technologies for creating oxygen-enriched gas streams are both energy and infrastructure

Validation of and Optimization with a Vapor Compression Cycle Model Accounting for Refrigerant Thermodynamic and Transport Properties: With Focus on Low GWP Refrigerants for Air-Conditioning

November 26, 2022
Author(s)
Harrison M. Skye, Piotr A. Domanski, Riccardo Brignoli, SANGHUN LEE, Heunghee Bae
… using experimental measurements from a small ( < 4 kW capacity) heat pump test apparatus operated in cooling … R-513A, R-450A, Tern-1 (R-134a/1234yf/1234ze(E) 49.2/33.8/17.0 mass fraction, %), R-515B, and R-1234yf. We also tested …

Projections of corrosion and deterioration of infrastructure in United States coasts under a changing climate

April 30, 2022
Author(s)
Yating Zhang, Bilal Ayyub, Juan Fung
… pathway (RCP) 8.5 and decrease by 0.7-1.1% under RCP 4.5 by the end of the 21st century. The useful life of steel … decrease by 7.9-15.9% under RCP 8.5 and 3.3-6.7% under RCP 4.5. Concrete bridges may suffer an average loss of $6.5-11.7/m2 under RCP 8.5 and $3.3-16.5/m2 under RCP 4.5 due to shortened useful life. Steel bridges may suffer an …
Displaying 801 - 825 of 1005
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