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NIST Authors in Bold

Displaying 6326 - 6350 of 7113

Comparison of the multi-national SIM time scale to UTC and UTCr

July 1, 2020
Author(s)
J. M. Lopez, Michael Lombardi, E. de Carlos, N. Munoz, C. Ortiz, M. Gertsvolf, R. de Carvalho, R. Solis
The Sistema Interamericano de Metrologia (SIM) is one of the world's five major Regional Metrology Organizations (RMO's) recognized by the International Committee for Weights and Measures (CIPM). With the goal of allowing SIM National Metrology Institutes

Electron-electron interactions in low-dimensional Si:P delta layers

June 15, 2020
Author(s)
Joseph Hagmann, Xiqiao Wang, Ranjit Kashid, Pradeep Namboodiri, Jonathan Wyrick, Scott W. Schmucker, Michael Stewart, Richard M. Silver, Curt A. Richter
… Key to producing quantum computing devices based on the atomistic placement of dopants …

Nanopore sequencing and the Shasta toolkit enable efficient de novo assembly of eleven human genomes

May 4, 2020
Author(s)
Justin M. Zook, Kishwar Shafin, Trevor Pesout, Ryan Lorig-Roach, Marina Haukness, Hugh E. Olsen, Miten Jain, Benedict Paten
De novo assembly of a human genome using nanopore long-read sequences has been reported, but it used more than 150,000 CPU hours and weeks of wall-clock time. To enable rapid human genome assembly, we present Shasta, a de novo long-read assembler, and

Measurements of Melt Pool Geometry and Cooling Rates of Individual Laser Traces on IN625 Bare Plates

February 5, 2020
Author(s)
Brandon M. Lane, Jarred C. Heigel, Richard E. Ricker, Ivan Zhirnov, Vladimir Khromchenko, Jordan S. Weaver, Thien Q. Phan, Mark R. Stoudt, Sergey Mekhontsev, Lyle E. Levine
The complex physical nature of the laser powder bed fusion (LPBF) process warrants use of multiphysics computational simulations to predict or design optimal operating parameters or resultant part qualities such as microstructure or defect concentration

Configurable error correction of code-division multiplexed TES detectors with a cryotron switch

June 10, 2019
Author(s)
Joel C. Weber, Joseph W. Fowler, Malcolm S. Durkin, Kelsey M. Morgan, John A. Mates, Douglas A. Bennett, William B. Doriese, Daniel R. Schmidt, Gene C. Hilton, Daniel S. Swetz, Joel N. Ullom
The development of a superconducting analog to the transistor with extremely low power dissipation will accelerate the proliferation of low-temperature circuitry operating in the milliKelvin regime. The thin-film, magnetically actuated cryotron switch is a

Resonant acoustic nonlinearity and loss in additively manufactured stainless steel

May 8, 2019
Author(s)
Ward L. Johnson, Justin G. Whiting, Felix H. Kim, Paul R. Heyliger, Nikolas W. Hrabe
Resonant acoustic nonlinearity and loss in additively manufactured stainless steel were measured with the aim of assessing the potential of such measurements for nondestructively sensing defects that degrade mechanical performance. The material was

Spontaneous current constriction in threshold switching devices

April 9, 2019
Author(s)
Jonathan Goodwill, Georg Ramer, Dasheng Li, Brian Hoskins, Georges Pavlidis, Jabez J. McClelland, Andrea Centrone, James A. Bain, Marek Skowronski
… can occur in nanoscale devices making them relevant for computing applications. …

Kinetics of H Atom Addition to Cyclopentene

March 7, 2018
Author(s)
Jeffrey A. Manion, Iftikhar A. Awan
To provide benchmark information needed to develop kinetic models of the combustion and pyrolysis of hydrocarbon ring structures, we have used the single pulse shock tube technique to study the kinetics of H atom addition to cyclopentene at 863 K to 1167 K

Pre-Viking Swedish Hillfort Glass: A Novel Long-Term Alteration Analogue for Vitrified 6 Nuclear Waste

March 1, 2018
Author(s)
Jamie L. Weaver, Carolyn Pearce, Rolf Sjoblom, John McCloy, Micah Miller, Tamas Varga, Bruce Arey, Michele Conroy, David Peeler, Robert Koestler, Paula DePriest, Edward Vicenzi, Albert Kruger
Examining ancient anthropogenic glasses altered in natural environments over hundreds of years can inform and verify models for predicting long-term rates of glass corrosion. Understanding corrosion mechanisms is critical for modeling the performance of

SARD: Thousands of Reference Programs for Software Assurance

October 31, 2017
Author(s)
Paul E. Black
A corpus of computer programs with known bugs is useful in determining the ability of tools to find bugs. This article describes the content of NIST's Software Assurance Reference Dataset (SARD), which is a publicly available collection of thousands of

3D Nanometrology Based on SEM Stereophotogrammetry

September 18, 2017
Author(s)
Vipin N. Tondare, John S. Villarrubia, Andras Vladar
Three-dimensional (3D) reconstruction of a sample surface from scanning electron microscope (SEM) images taken at two perspectives has been known for decades. However, this method has not been widely used in the semiconductor industry for 3D measurements

Shape Descriptors Comparison for Cell Tracking

October 15, 2015
Author(s)
Michael P. Majurski, Christopher Zheng, Joe Chalfoun, Alden A. Dima, Mary C. Brady
… into a one dimensional shape signature suitable for computing Fourier descriptors. The Fourier descriptors are …

Quantitative tool characterization of a 193 nm scatterfield microscope

September 9, 2015
Author(s)
Martin Y. Sohn, Bryan M. Barnes, Hui Zhou, Richard M. Silver
Optical microscope tool characterization has been investigated for the quantitative measurements of deep sub-wavelength features using a Fourier plane normalization method. The NIST 193 nm scatterfield microscope operating with an ArF Excimer laser, which

Thermochemical Characterization of Biodiesel Fuels using a Novel Laser-Heating Technique

August 4, 2015
Author(s)
Cary Presser, Ashot Nazarian, Thomas J. Bruno, Jacolin A. Murray, John L. Molloy
A state-of-the-art, rapid laser-heating technique, referred to as the laser-driven thermal reactor, was used to characterize National Institute of Standards and Technology Standard Reference Material (SRM) diesel and biodiesel fuels. Also described are the

Morphological Stability

December 5, 2014
Author(s)
Robert F. Sekerka, Sam R. Coriell, Geoffrey B. McFadden
The theory of morphological stability provides a dynamical analysis of the stability of the interface that separates phases during a phase transformation. We focus on crystallization from either a pure or alloy melt. One solves the governing equations for
Displaying 6326 - 6350 of 7113
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