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Search Publications

NIST Authors in Bold

Displaying 4001 - 4025 of 9856

A Materials Data Framework and Dataset for Elastomeric Foam Impact Mitigating Materials

June 5, 2023
Author(s)
Alexander Landauer, Orion Kafka, Newell Moser, Ian Foster, Ben Blaiszik, Aaron M. Forster
The availability of materials data for impact-mitigating materials has lagged behind applications-based data. For example, data describing on-field helmeted impacts are available, whereas material behaviors for the constituent impact mitigating materials

Transitioning the Use of Cryptographic Algorithms and Key Lengths

March 21, 2019
Author(s)
Elaine B. Barker, Allen L. Roginsky
… of algorithm breaks or the availability of more powerful computing techniques. NIST Special Publication (SP) 800-57, … key wrapping, message authentication codes, post-quantum algorithms, random number generation, security …

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

Brightly Luminescent CsPbBr3 Nanocrystals through Ultracentrifugation

July 30, 2020
Author(s)
Jeffrey Fagan, Erik K. Hobbie, Aaron Forde, Richard D. Schaller, salim thomas, samuel brown, Matthew B. Kurtti, dmitri kilin
… emission is tuned primarily through chemical composition, quantum confinement and size-dependent optical effects have … to achieve bright stable suspensions. We observe high PL quantum yield, blue-emitting fractions, and a narrowing of PL … in agreement with the simple particle-in-a-box picture of quantum confinement. …

Nanocrystal Molecules and Chains

October 1, 2003
Author(s)
J F. Diaz, W Jaskolski, J Planelles, Javier Aizpurua, Garnett W. Bryant
… of states in systems of strongly interacting coupled quantum dots. Strong interaction between the quantum dot-quantum well structures in a chain of nanocrystals can lead …

Chalcogenide Topological Insulators

November 15, 2019
Author(s)
Joseph A. Hagmann
… systems that host the topological insulator phase of quantum matter. Specifically, the HgTe quantum well 2D topological insulator system and the …

Toward Heisenberg-Limited Spectroscopy with Multiparticle Entangled States

January 1, 2004
Author(s)
Dietrich G. Leibfried, Murray D. Barrett, T Schaetz, Joseph W. Britton, J Chiaverini, Wayne M. Itano, John D. Jost, Christopher Langer, David J. Wineland
… The precision in spectroscopy of any quantum system is fundamentally limited by the Heisenberg … time. For N systems, this limit requires that they be in a quantum-mechanically entangled state. We describe a scalable …

SUSTAINABILITY CHARACTERIZATION FOR DIE CASTING PROCESS

August 7, 2013
Author(s)
Megan F. Watkins, Mahesh Mani, Kevin W. Lyons, Satyandra K. Gupta
The manufacturing sector accounts for approximately one-third of the total energy consumption in the United States. Today, sustainable manufacturing has become an area of increasing interest, as companies look to reduce their manufacturing footprint and

CHARACTERIZING SUSTAINABILITY FOR MANUFACTURING PERFORMANCE ASSESSMENT

August 17, 2012
Author(s)
Mahesh Mani, Jatinder Madan, Jae H. Lee, Kevin W. Lyons, Satyandra K. Gupta
Manufacturing industries lack the measurement science and the needed information base to measure and effectively compare performances of manufacturing processes, resources and associated services with respect to sustainability. The current use of ad-hoc

Standardizing CT Lung Density Measure Across Scanner Manufacturers

March 1, 2017
Author(s)
Huaiyu H. Chen-Mayer, Matthew Fuld, Bernice Hoppel, Phillip Judy, Junfeng Guo, David Lynch, Antonio M. Possolo, Sean B. Fain
Computed Tomography imaging of the lung, reported in Hounsfield Units (HU), can be parameterized as a quantitative image biomarker for the diagnosis and monitoring of lung density changes due to emphysema, a type of chronic obstructive pulmonary disease

Cloud Test Data Creation and Population Document

June 7, 2023
Author(s)
Richard Ayers
This test data creation and population document provides an overview of data creation, population and documentation of artifacts created for cloud-based applications specified in Version 1 of Cloud & Remotely Stored Data Extraction (CDX) Using Account

Three-dimensional particle size, shape, and internal porosity characterization: Application to five similar titanium alloy (Ti-6Al-4V) powders and comparison to two-dimensional measurements

May 26, 2021
Author(s)
Edward Garboczi, Rainer Hebert, Yu Sun, Mark Aindow
In an earlier paper, titanium alloy (Ti-6Al-4V) powders from six different vendors were characterized with a number of methods in an attempt to distinguish these powders that were all nominally meeting additive manufacturing standards. One of the methods

Sr Lattice Clock at 1 x 10 -16 Fractional Uncertainty by Remote Optical Evaluation with a Ca clock

March 28, 2008
Author(s)
A D. Ludlow, T Zelevinsky, G K. Campbell, S Blatt, M M. Boyd, M de Miranda, M J. Martin, S M. Foreman, J Ye, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, Yann LeCoq, Zeb Barber, Nicola Poli, Nathan D. Lemke, K. Beck, Christopher W. Oates
… control possible over their electronic and motional quantum states, as demonstrated in both clock and quantum information experiments. While neutral atoms enjoy … allow clean preparation, control, and readout of atoms for quantum simulations. Our measurements with thousands of atoms …

Software Metrics: Impossible, but Doable

January 22, 2025
Author(s)
Paul Black
Software metrics are theoretically impossible. However, there is tremendous benefit if we can assess properties of computerized systems. We review the elements that make it hard to computerized systems, in contrast with Civil Engineering or physical
Displaying 4001 - 4025 of 9856
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