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.

Search Publications

NIST Authors in Bold

Displaying 4951 - 4975 of 73888

Report on High Energy Arcing Fault Experiments - Experimental Results from Open Box Enclosures

December 29, 2021
Author(s)
Gabriel Taylor, Anthony D. Putorti Jr., Scott Bareham, Christopher U. Brown, Wai Cheong Tam, Edward Hnetkovsky, Andre Thompson, Michael Selepak, Philip Deardorff, Kenneth Hamburger, Nicholas Melly, Kenneth Miller, Kenneth Armijo, Paul Clem, Alvaro Cruz-Cabrera, Byron Demosthenous, Austin Glover, Chris LaFleur, Raymond Martinez, James Taylor, Rana Weaver, Caroline Winters
This report documents an experimental program to investigate High Energy Arcing Fault (HEAF) phenomena. The experiments provide data to better characterize the arc to improve the prediction of arc energy emitted during a HEAF event. An open box allows for

Markov Multi-Beamtracking in SU-MIMO with 60 GHz Mobile Channel Measurements

December 28, 2021
Author(s)
Steve Blandino, Jelena Senic, Camillo Gentile, Derek Caudill
Beamforming training refers to the exhaustive scan over which the receiver and transmitter beams are steered along a predefined set of angles to determine the beam pairs that coincide with the dominant channel paths, for spatial multiplexing. In the

Physical Properties of the Quasi-Two-Dimensional Square Lattice Antiferromagnet Ba 2 FeSi 2 O 7

December 28, 2021
Author(s)
Tae-Hwan Jang, Seung-Hwan Do, Minseong Lee, Hui Wu, Craig Brown, Andrew D. Christianson, Sang-Wook Cheong, Jae-Hoon Park
We report magnetization (χ, M), magnetic specific heat (CM), and neutron powder diffraction results on a quasi-two-dimensional (2D) S = 2 square lattice antiferromagnet Ba 2FeSi 2O 7 consisting of FeO 4 tetrahedrons with highly compressive tetragonal

Progress in Materials Data Availability and Application: A Review

December 28, 2021
Author(s)
Chandler A. Becker, James A. Warren
Materials researchers are generating data in ever-increasing volumes, and this data is, in turn, fueling the discovery and design of new materials. These changes are enabled by advances in data capture via laboratory information management systems (LIMS)

Disposition of Fluorine on New Firefighter Turnout Gear: Implications for Occupational Exposure

December 27, 2021
Author(s)
Derek Muensterman, Ivan Titaley, Graham Peaslee, Leah Minc, Liliana Cahuas, Alix Rodowa, Yuki Horiuchi, Shogo Yamane, Thierry Fouquet, John Kissel, Courtney Carignan, Jennifer Field
Firefighter turnout gear is essential for reducing occupational exposure to hazardous chemicals during training and fire events. Per-and polyfluoroalkyl substances (PFASs) are observed in firefighter serum, and possible occupational sources include the air

Advanced Tests of Fundamental Physics with State-of-the-Art Optical Clocks/Two-Way Time Links in Space

December 23, 2021
Author(s)
Chris Oates, Nathan R. Newbury, Laura Sinclair, Leo Hollberg, Andrei Derevianko, Marianna Safronova, Nan Yu, Kurt Gibble
Recent advances in optical atomic clocks and optical time transfer have enabled new possibilities in precision metrology for both tests of fundamental physics and timing applications. Space offers both the potential to vary significantly the gravitational

Fundamental Physics with a State-of-the-Art Optical Clock in Space

December 23, 2021
Author(s)
Andrei Derevianko, Kurt Gibble, Leo Hollberg, Nathan R. Newbury, Chris Oates, Laura Sinclair, Nan Yu
Recent advances in optical atomic clocks and optical time transfer have enabled new possibilities in precision metrology for both tests of fundamental physics and timing applications. Here we describe a space mission concept that would place a state-of-the

Non-fullerene acceptors with direct and indirect hexa-fluorination afford > 17% efficiency in polymer solar cells

December 22, 2021
Author(s)
Subhrangsu Mukherjee, Guoping Li, Liang-Wen Feng, Leighton Jones, Robert Jacobberger, Wei Huang, Ryan Young, Robert Pankow, Weigang Zhu, Norman Lu, Kevin Kohlstedt, Vinod Sangwan, Michael Wasielewski, Mark Hersam, George Schatz, Dean DeLongchamp, Antonio Facchetti, Tobin Marks
The rational molecular design of non-fullerene acceptors (NFAs) in organic solar cells (OSCs) can profoundly influence the photovoltaic (OPV) performance. To date, NFA fluorination has proven beneficial to cell performance. However, there is a lack of

Nu Tools: Exploring Practical Roles for Neutrinos in Nuclear Energy and Security

December 21, 2021
Author(s)
Hans Pieter Mumm, Tomi Akindele, Nathaniel Bowden, Rachel Carr, Andrew Conant, Milind Diwan, Anna Erickson, Michael Foxe, Bethany Goldblum, Patrick Huber, Igor Jovanovic, Jonathan Link, Bryce Littlejohn, Jason Newby
For decades, physicists have used neutrinos from nuclear reactors to advance basic science. These pursuits have inspired many ideas for application of neutrino detectors in nuclear energy and security. While developments in neutrino detectors are now

A Robust Algorithm for PAM4 Eye-Diagram Analysis

December 20, 2021
Author(s)
Jeffrey Jargon, Jerome Cheron
We propose a new approach for analyzing PAM4 (pulse amplitude modulation 4-level) eye diagrams that always provides a unique solution by making use of a K-Means algorithm in conjunction with a robust, shortest interval location estimator. Our motivation

Admission Control and Scheduling of Isochronous Traffic in IEEE 802.11ad MAC

December 20, 2021
Author(s)
Anirudha Sahoo, Weichao Gao, Tanguy Ropitault, Nada T. Golmie
An upsurge of bandwidth hungry applications such as virtual reality, augmented reality and availability of unlicensed spectrum in the mmWave band at 60 GHz have led to standardization of the next generation WiFi such as IEEE 802.11ad and 802.11ay. Due to

Excipient Innovation Through Precompetitive Research

December 20, 2021
Author(s)
Bruce Yu, Marc Taraban, Katharine Briggs, Robert Brinson, John Marino
The mRNA COVID-19 vaccines developed by Pfizer/BioNTech and Moderna represent a triumph of vaccine development. The core mRNA component of these vaccines is now almost a household name. Unbeknownst to most people, however, is that each of the two mRNA

Instrumented Charpy Tests at 77 K on 316L Stainless Steel Welded Plates

December 20, 2021
Author(s)
Enrico Lucon, Jake Benzing
In the framework of a collaborative project between ASME, NASA, and NIST, instrumented Charpy tests have been performed at liquid nitrogen temperature (77 K, or 196 °C) on specimens extracted from the center of four 316L welded stainless steel plates, each

Spin Dynamics in the Skyrmion-Host Lacunar Spinel GaV 4 S 8

December 20, 2021
Author(s)
G. Pokharel, H. Arachchige, S. Gao, S.-H. Do, R. Fishman, G. Ehlers, Yiming Qiu, Jose Rodriguez Rivera, M. B. Stone, H. Zhang, Stephen Wilson, D. Mandrus, A. Christianson
In the lacunar spinel GaV 4S 8, the interplay of spin, charge, and orbital degrees of freedom produces a rich phase diagram that includes an unusual Neel-type skyrmion phase composed of molecular spins. To provide ´ insight into the interactions underlying
Displaying 4951 - 4975 of 73888
Was this page helpful?