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Search Publications

NIST Authors in Bold

Displaying 1 - 25 of 143775

Disorder-Induced Spin Excitation Continuum and Spin-Glass Ground State in the Inverse Spinel CuGa2O4

July 10, 2025
Author(s)
Zhentao Huang, Zhijun Xu, Shuaiwei Li, Qingchen Duan, Junbo Liao, Song Bao, Yanyan Shangguan, Bo Zhang, Hao Xu, Shufan Cheng, Zihang Song, Shuai Dong, Maofeng Wu, M. B. Stone, Yiming Qiu, Ruidan Zhang, Guangyong Xu, Zhen Ma, G. Gu, J. Tranquada, Jinsheng Wen
Spinel-structured compounds serve as prototypical examples of highly frustrated systems and are promising candidates for realizing the long-sought quantum spin liquid (QSL) state. However, structural disorder is inevitable in many real QSL candidates and

Integrated multi-port, multi-wavelength coherent optical source for beyond Tb/s optical links

July 10, 2025
Author(s)
Ali Pirmoradi, Jizhao Zang, Kaisarbek Omirzakhov, Zhehao Yu, Yan Jin, Scott Papp, Firooz Aflatouni
Multi-wavelength, multi-port light sources formed with a Kerr-soliton microcomb and a wavelength demultiplexer are a key part of optical links utilizing wavelength-division multiplexing. Critical and emerging technologies such as data-center connectivity

Inter-tool analysis of a NIST dataset for assessing baseline nucleic acid sequence screening

July 10, 2025
Author(s)
Tyler Laird, Kevin Flyangolts, Craig Bartling, Bryan Gemler, Jacob Beal, Tom Mitchell, Steven T. Murphy, Jens Berlips, Leonard Foner, Ryan Doughty, Felix Qunitana, Michael Nute, Todd J. Treangen, Gene D. Godbold, Krista Ternus, Tessa Alexanian, Nicole Wheeler, Samuel Forry
Nucleic acid synthesis is a dual-use technology that can benefit fields such as biology, medicine, and information storage. However, synthetic nucleic acids could also potentially be used negligently and ultimately cause harm, or be used with malicious

Non-resonant Two-photon X-ray Absorption in Cu

July 10, 2025
Author(s)
Joshua Kas, John Rehr, Joachim Stohr, John Vinson
We present a real-space Green's function theory and calculations of two-photon x-ray absorption (TPA). Our focus is on nonresonant K-shell TPA in metallic Cu, which has been observed experimentally at intense x-ray free electron laser (XFEL) sources. The

Reference Correlation of the Viscosity of Argon

July 10, 2025
Author(s)
Sofia Sotiriadou, Konstantinos Antoniadis, Marc Assael, Marcia Huber
This paper presents a new wide-ranging reference correlation for the viscosity of argon, incorporating recent ab initio dilute gas calculations and critically evaluated experimental data. The correlation is designed to be used with a high-accuracy

INTERNATIONAL ROADMAP FOR DEVICES AND SYSTEMS TM 2024 METROLOGY

July 9, 2025
Author(s)
Yaw Obeng, Elisabeth Mansfield, Albert Davydov, Bryan Barnes, Andras Vladar
The Metrology Chapter identifies emerging measurement challenges from devices, systems, and integration of new materials in the semiconductor industry and describes research and development pathways for meeting them. This includes but not limited to

Quasi-Deterministic Channel Propagation Model for Human Sensing: Gesture Recognition Use Case

July 9, 2025
Author(s)
Jack Chuang, Raied Caromi, Jelena Senic, Samuel Berweger, Neeraj Varshney, Jian Wang, Anuraag Bodi, Camillo Gentile, Nada Golmie
We describe a quasi-determinstic channel propagation model for human gesture recognition reduced from real-time measurements with our context aware channel sounder, considering four human subjects and 20 distinct body motions, for a total of 120,000

Unit Pricing Guide - A Best Practice Approach to Unit Pricing

July 9, 2025
Author(s)
John McGuire, David Sefcik, Katrice Lippa, Scott Dolan, Isabel Baucom
This guide was developed to provide retailers with information about the best practice requirements for the unit pricing of commodities. The guide consists of best practice approaches that will improve the accuracy and usability of unit pricing information

Machine Learning for MPC Extraction and False Detection

July 8, 2025
Author(s)
Howard Dai, Jack Chuang, Jian Wang, Samuel Berweger, David Griffith
Multipath component (MPC) extraction is critical for channel modeling and joint communications and sensing (JCAS). Super-resolution algorithm known as CLEAN-Space-Alternating Generalized Expectation (CLEAN-SAGE) is widely used for MPC extraction. Because

Community Resilience Economic Decision Guide and Tool: Research Overview 2025

July 7, 2025
Author(s)
Christina Gore, Jennifer Helgeson
Community resilience planning often requires quantifying and understanding the trade-offs that communities make between the benefits and costs of different potential resilience actions. The Economic Decision Guide (EDG) walks communities through the steps

Primary activity measurement of an Am-241 solution using microgram inkjet gravimetry and decay energy spectrometry

July 7, 2025
Author(s)
Ryan Fitzgerald, Bradley Alpert, Denis Bergeron, Max Carlson, Richard Essex, Kelsey Morgan, Shinichiro N. Muramoto, Svetlana Nour, Galen O'Neil, Daniel Schmidt, Gordon Shaw, Daniel Swetz, R Verkouteren
We demonstrate a method for radionuclide assay that is spectroscopic with 100 % counting efficiency for alpha decay. Advancing both cryogenic decay energy spectrometry (DES) and drop-on-demand inkjet metrology, a solution of Am-241 was assayed for massic

A Standards-Guided Approach for Formalizing Product Circularity Assessment Metrics

July 3, 2025
Author(s)
Junwon Ko, Sandwana Sneethan, Gisele Bortolaz Guedes, Fazleena Badurdeen, I.S. Jawahir, Buddhika Hapuwatte, Katherine Morris
The industrial transition towards a more sustainable Circular Economy (CE) emphasizes the need for products that align with CE principles and robust methods for assessing their circularity performance. However, ambiguities between metrics vs. indicators

Event Report for "MLXN25: Machine Learning for X-ray and Neutron Scattering"

July 3, 2025
Author(s)
Peter Beaucage, Tanny Andrea Chavez Esparza, Alexander Hexemer, Tyler Martin, Peter Muller-Buschbaum, Stephan Roth, Xiaoping Wang
The MLXN25 virtual event was held on April 15, 2025, as a continuous 24-hour global event, uniting over 300 registered participants from 18 countries and 20 user facilities to discuss how machine learning (ML) is transforming X-ray and neutron science

Implementation of a 1 GO star-mesh graphene quantum Hall array resistance standard network for high resistance calibration

July 3, 2025
Author(s)
Dean Jarrett, Albert Rigosi, Yanfei Yang, Alireza Panna, David Newell, Ngoc Thanh Mai Tran, Wei-Chen Lin, Marta Musso, Cheng-Hsueh Yang, Chi-Te Liang, Massimo Ortolano, Randolph Elmquist
A 1 GΩ star-mesh quantized Hall array resistance standard (QHARS) made of thirty-seven quantum Hall effect (QHE) elements was fabricated and tested. The 1 GΩ QHARS has three orders of magnitude fewer QHE elements than a largely series 1 GΩ QHARS, which
Displaying 1 - 25 of 143775
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