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 1126 - 1150 of 143757

Vertically Graded FeNi Alloys with Low Damping and a Sizeable Spin-Orbit Torque

June 14, 2024
Author(s)
Rachel Maizel, Shuang Wu, Purnima P. Balakrishnan, Alexander Grutter, Christy Kinane, Andrew Caruana, Prabandha Nakarmi, Bhuwan Nepal, David Smith, Youngmin Lim, Juila Jones, Wyatt Thomas, Jing Zhao, F. Michel, Tim Mewes, Satoru Emori
Energy-efficient spintronic devices require a large spin-orbit torque (SOT) and low damping to excite magnetic precession. In conventional devices with heavy-metal/ferromagnet bilayers, reducing the ferromagnet thickness to ∼1 nm enhances the SOT but drama

Viscoelastic Assessment Method of Polymeric Foams under Cyclic Fatigue

June 14, 2024
Author(s)
Moira M Foster, Daniel C Morrison, Alexander Landauer, Mark Herynk, Leslie Lamberson
Many energy absorption applications utilize flexible polymeric foams for their viscoelastic properties. It is desired that the material will perform consistently across repeated compression cycles. This study examines the effect of fatigue at low strain

Bubbles Enable Volumetric Negative Compressibility in Metastable Elastocapillary Systems

June 13, 2024
Author(s)
Davide Caprini, Francesco Battista, Pawel Zajdel, Giovanni Di Muccio, Carlo Guardiani, Benjamin Trump, Marcus Carter, Andrey Yakovenko, Eder Amayuelas, Luis Bartolome, Simone Meloni, Yaroslav Grosu, Carlo Massimo Casciola, Alberto Giacomello
Although coveted in applications, few materials expand when subject to compression or contract under decompression, i.e., exhibit negative compressibility. A key step to achieve such counterintuitive behaviour is the destabilisations of (meta)stable

The Black Hole Explorer: Motivation and Vision

June 13, 2024
Author(s)
Michael D. Johnson, Kazunori Akiyama, Rebecca Baturin, Bryan Bilyeu, Lindy Blackburn, Don Boroson, Alejandro Cardena-Avendano, Andrew Chael, Chi-kwan Chan, Dominic Chang, Peter Cheimets, Cathy Chou, Sheperd S. Doeleman, Joseph Farah, Peter Galison, Ronald Gamble, Charles F. Gammie, Zachary Gelles, Jose L. Gomez, Samuel E. Gralla, Paul Grimes, Shahar Hadar, Kari Haworth, Kazuhiro Hada, Michael H. Hecht, Mareki Honma, Janice Houston, Ben Hudson, Sara Issaoun, He Jia, Svetlana Jorstad, Jens Kauffmann, Yuri Kovalev, Leonid I. Gurvits, Peter Kurczynski, Robert Lafon, Alexandru Lupsasca, Robert Lehmensiek, Chung-Pei Ma, Daniel P. Marrone, Alan P. Marscher, Gary J. Melnick, Ramesh Narayan, Kotaro Niinuma, Scott C. Noble, Eric J. Palmer, Daniel C. Palumbo, Lenny Paritsky, Eliad Peretz, Dominic Pesce, Alexander Plavin, Eliot Quataert, Hannah Rana, Angelo Ricarte, Freek Roelofs, Katia Shtyrkova, Laura Sinclair, Jeffrey Small, Sridharan Tirupati Kumara, Ranjani Srinivasan, Andrew Strominger, Paul Tiede, Edward Tong, Jade Wang, Jonathan Weintroub, Maciek Wielgus, George Wong, Xinyue Alice Zhang
We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry (VLBI) to space. BHEX will discover and measure the bright and narrow

Maximum Luminous Intensity of LED-lighted X signs for Airport Runways

June 12, 2024
Author(s)
Yoshi Ohno, Maritoni Litorja, C Cameron Miller
This is a report for Inter-agency agreement 693KA9-18-N-00023 "Maximum Luminous Intensity for LED Signaling in an Airport Environment" by Federal Aviation Administration (FAA) and National Institute of Standards and Technology (NIST). The LED-based lighted

Reactor Antineutrino Directionality Measurement with the PROSPECT-I Detector

June 12, 2024
Author(s)
Hans Mumm, Manoa Andriamirado, Baha Balantekin, Christopher Bass, Ohana Benevides Rodrigues, Ethan Bernard, Nathaniel Bowden, Christopher Bryan, Rachel Carr, Timothy Classen, Andrew Conant, Geoffrey Deichert, Michelle Dolinski, Anna Erickson, Alfredo Galindo-Uribarri, Sasmit Gokhale, Chris Grant, Sunej Hans, Adam Hansell, Karsten Heeger, Blaine Heffron, David Jaffe, Shashank Jayakumar, John Koblanski, Paige Kunkle, Charles Lane, Bryce Littlejohn, Adrian Lozano Sanchez, Xiaobin (Jeremy) Lu, Jelena Maricic, Michael Mendenhall, Andrew Meyer, Radovan Milincic, Paul Mueller, Russell Neilson, Xin Qian, Christian Roca, Richard Rosero, Pranava Teja Surukuchi, Felicia Sutanto, Diego Venegas-Vargas, Pierce Weatherly, James Wilhelmi, Minfang Yeh, Chao Zhang, Xianyi Zhang
The PROSPECT-I detector has several features that enable measurement of the direction of a compact neutrino source. In this paper, a detailed report on the directional measurements made on electron antineutrinos emitted from the High Flux Isotope Reactor

Toward an International Standardisation Roadmap for Nanomedicine

June 12, 2024
Author(s)
Bryant C. Nelson, Gerrit Borchard, Luigi Calzolai, Fanny Caputo, Georges Favres, Fisicaro Fisicaro, Emeric Frejafon, Nazende Gunday-Tureli, Denis Koltsov, Caterina Minelli, Francois-Xavier Ouf, Jeremie Parot, Adriele Prina Mello, Shan Zou
The French National Measurement Institute (LNE) has initiated a series of events to identify priorities for test methods and their harmonisation that directly address regulatory needs in Nanomedicine. The workshop entitled "The International

Three-dimensional characterization of particle size, shape, and internal porosity for Apollo 11 and Apollo 14 lunar regolith and JSC-1A lunar regolith soil simulant

June 8, 2024
Author(s)
Jay Goguen, Andrew Sharits, Ann Chiaramonti Debay, Thomas V. Lafarge, Edward Garboczi
Samples of soils collected by the Apollo 11 mission (10084) and the Apollo 14 mission (14163) were obtained from the NASA CAPTEM program. The particle size, shape, and internal porosity were characterized in three dimensions (3D) using a combination of X

Laser Offset Stabilization with Chip-Scale Atomic Diffractive Elements

June 7, 2024
Author(s)
Heleni Krelman, Ori Nefesh, Kfir Levi, Douglas Bopp, Songbai Kang, Liron Stern, John Kitching
Achieving precise and adjustable control over laser frequency is an essential requirement in numerous applications such as precision spectroscopy, quantum control, and sensing. In many of such applications it is desired to stabilize a laser with a variable

Quantifying Mechanical Abrasion of AgNP Nanocomposites used in 3D Printing: Influence of AgNP content on abrasion products and rate of microplastic production

June 7, 2024
Author(s)
Joana Sipe, William Berger, Nathan Bossa, Melissa Chernick, Keana C. K. Scott, Alan Kennedy, Treye Thomas, Christine Ogilvie, Mark Wiesner
Nanomaterials are used in polymer composites to enhance plastic products' properties. Silver nanoparticles (AgNPs) are added to composites for their antimicrobial and fungicidal properties. Polyethylene terephthalate glycol polymer (PETG) AgNP composite

Quantum metrology algorithms for dark matter searches with clocks

June 7, 2024
Author(s)
Muhammad Zaheer, Naleli Matjelo, David Hume, Marianna Safronova, David Leibrandt
Quantum metrology involves improving the sensitivity of a quantum sensor to a signal while circumventing sensitivity to noise using algorithms from quantum information science. Atomic clocks are among the most sensitive quantum sensors, with recent

On the Semidirect Discrete Logarithm Problem in Finite Groups

June 6, 2024
Author(s)
Christopher Battarbee, Giacomo Borin, Julian Brough, Ryann Cartor, Tobias Hemmert, Nadia Heninger, David Jao, Delaram Kahrobaei, Laura Maddison, Edoardo Persichetti, Angela Robinson, Daniel Smith-Tone, Rainer Steinwandt
We present an efficient quantum algorithm for solving the semidirect discrete logarithm problem (SDLP) in any finite group. The believed hardness of the semidirect discrete logarithm problem underlies more than a decade of works constructing candidate post

Measuring the Influence of CO2 and Water Vapor on the Dynamics in Polyethylenimine To Understand the Direct Air Capture of CO2 from the Environment

June 5, 2024
Author(s)
Avery Baumann, Takeshi Yamada, Kanae Ito, Chad R. Snyder, John Hoffman, Craig Brown, Christopher Stafford, Christopher Soles
Aminopolymer sorbents are leading candidates for extracting CO2 directly from the atmosphere under ambient conditions. For effective carbon capture, this requires not only that the CO2 actively binds with amine groups of the polymer under low gas

NIST Greenhouse Gas Measurements Program: A Decade of Critical Accomplishments

June 5, 2024
Author(s)
James Whetstone, Tamae Wong, Hratch Semerjian
At COP 21 (Paris), there was general agreement that programs to reduce greenhouse gas emissions and mitigate atmospheric warming will require an understanding of existing emissions as well as programs to monitor, report, and verify emissions from a broad
Displaying 1126 - 1150 of 143757
Was this page helpful?