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Search Publications

NIST Authors in Bold

Displaying 676 - 700 of 2714

Versatile fluidic cell for in-situ electrochemical measurements in SEM

July 24, 2016
Author(s)
Jeyavel Velmurugan, Ana Stevanovic, Feng Yi, David A. LaVan, Andrei Kolmakov
Electrochemical techniques such as like electrodeposition are crucially important for fabrication of nanostructured materials. The details of cluster nucleation and growth at early stages of electrodeposition are extremely important for morphology and

Phonon Anharmonicity in Bulk Td-MoTe2

July 18, 2016
Author(s)
Albert Davydov, Sergiy Krylyuk, Irina Kalish, Ryan Beams, Patrick Vora
We examine anharmonic contributions to the optical phonon frequency in bulk Td-MoTe2 phase through temperature-dependent Raman spectroscopy. At temperatures greater than 100 K we find that the optical phonon modes redshift linearly with temperature in

First mass measurements with the NIST-4 watt balance

July 10, 2016
Author(s)
Darine El Haddad, Leon S. Chao, Frank C. Seifert, David B. Newell, Jon R. Pratt, Stephan Schlamminger
In the past four years, we have constructed a new watt balance at the National Institute of Standards and Technology (NIST), with the goal to realize the unit of mass after the redefinition of the International System of Units, expected to occur in 2018

Improvement of Leakage Resistance of PJVS for NIST-4 Watt Balance Experiment

July 10, 2016
Author(s)
Yi-hua D. Tang, Frank C. Seifert, Stephan Schlamminger
A Programmable Josephson Voltage Standard (PJVS) system is used for the voltage measurements in NIST-4 Watt balance experiment. It is critical to enhance the leakage resistance of the PJVS in order to achieve the uncertainty of voltage measurements better

Quantum Hall Resistance Traceability for the NIST-4 Watt Balance

July 10, 2016
Author(s)
Dean G. Jarrett, Randolph Elmquist, Marlin E. Kraft, George R. Jones Jr., Shamith Payagala, Frank Seifert, Stephan Schlamminger, Darine El Haddad
Scaling from the quantum Hall resistance to 100 Ω standard resistors used by the NIST-4 Watt Balance involves multiple resistance standards and bridges to provide the lowest possible uncertainty. Described here is the infrastructure and procedures

Improved spectra aberration in the Johnson Noise Thermometry

July 9, 2016
Author(s)
Alessio Pollarolo, Horst Rogalla, Anna Fox, Kevin J. Coakley, Weston L. Tew, Samuel P. Benz
SPECTRAL ABERRATION HAS BEEN FOR A LONG TIME THE MAIN SOURCE OF UNCERTAINTY IN THE JOHNSON NOISE THERMOMETRY APPROACH TO MEASURING THE BOLTZMANN CONSTANT. RECENTLY, WITH NEWLY DEVELOPED HARDWARE AND THE INTRODUCTION OF A NOVEL FITTING ALGORITHM FOR

Local coexistence of VO2 phases revealed by deep data analysis

July 7, 2016
Author(s)
Evgheni Strelcov, Anton Ievlev, Alex Belianinov, Alexander Tselev, Andrei A. Kolmakov, Sergei Kalinin
We report a synergistic approach of micro-Raman spectroscopic mapping and deep data analysis to study the distribution of crystallographic phases and ferroelastic domains in a defected Al-doped VO2 microcrystal. Bayesian linear unmixing revealed an uneven

Certification Report for the Reference Materials ERM-AE142 and ERM-EB400 A pure Pb solution and a bronze material, both certified for their Pb isotope amount ratios

July 1, 2016
Author(s)
Jochen Vogl, Dorit Becker, Maren Koenig, Yong-Hyeon Yim, Kyoung-Seok Lee, Heidi Goenaga-Infante, Dmitriy Malinowskiy, Sarah Hill, Tongxiang Ren, Jun Wang, Robert D. Vocke Jr., Karen E. Murphy, Naoko Nonose, Olaf Rienitz, Janine Noordmann
Lead isotope analysis is often applied in various fields such as archaeology, geochemistry and forensic science. Despite this, only the 3 primary isotopic reference materials NIST SRM; 981, NIST SRM 982 and NIST SRM 983 are available, whereby NIST SRM 981

TRECVid Semantic Indexing of Video: A 6-Year Retrospective

July 1, 2016
Author(s)
George M. Awad, Cees Snoek, Alan Smeaton, Georges Quenot
Semantic indexing, or assigning semantic tags to video samples, is a key component for content-based access to video documents and collections. The Semantic Indexing task has been run at TRECVid from 2010 to 2015 with the support of NIST and the Quaero

Uncertainties in Nanometer-Scale Dimensional Metrology

July 1, 2016
Author(s)
John S. Villarrubia
These are slides used for an oral presentation made at the NIST "Workshop on Quantification of Uncertainties in Material Science." In nanometer-scale dimensional metrology, correction of probing errors, which are caused by the characteristic left/right

A Snapshot of 118 Solid State Lighting Testing Laboratories' Capabilities

June 23, 2016
Author(s)
C Cameron Miller, Hannah Hasting, Maria Nadal
The National Institute of Standards and Technology (NIST) began to offer proficiency testing for Solid-State Lighting (SSL) products through a Measurement Assurance Program (MAP) in 2010. The MAP program provided proficiency testing complimenting

A precise instrument to determine the Planck constant, and the future kilogram

June 21, 2016
Author(s)
Darine El Haddad, Frank C. Seifert, Leon S. Chao, David B. Newell, Jon R. Pratt, Carl J. Williams, Stephan Schlamminger, Shisong Li
A precise instrument, called a watt balance, compares mechanical power measured in terms of the meter, the second and the kilogram to electrical power measured in terms of the volt and the ohm. A direct link between mechanical action and the Planck

Hydrodynamic Radius Fluctuations in Model DNA-Grafted Nanoparticles

June 16, 2016
Author(s)
Luis Fernando Vargas Lara, Francis W. Starr, Jack F. Douglas
We utilize molecular dynamics simulations (MD) and the path-integration program ZENO to quantify hydrodynamic radius (Rh) fluctuations of spherical symmetric gold nanoparticles (NPs) decorated with single-stranded DNA chains (ssDNA). In particular, we

Sub-Femto-g Free Fall for Space-Based Gravitational Wave Observatories: LISA Pathfinder Results

June 7, 2016
Author(s)
Michele Armano, Heather Audley, Gerard Auger, Jonathon Baird, Massimo Bassan, Pierre Binetruy, Michael Born, Daniele Bortoluzzi, Nico Brandt, Antonella Cavalleri, Andrea Cesarini, Giacomo Ciani, Giuseppe Congedo, Mike Cruise, Karsten Danzmann, Marcus de Deus Silva, Rosario De Rosa, Marc Diaz Aguilo, Luciano Di Fiore, Ingo Diepholz, George Dixon, Rita Dolesi, Luigi Ferraioli, Valerio Ferroni, Walter Fichter, Reinhold Flatscher, Antonio F. Garcia Marin, Cesar Garcia Marirrodriga, Ruediger Gerndt, Ferran Gibert, Domenico Giardini, Roberta Giusteri, Felipe Guzman, Aniello Grado, Catia Grimani, Adrien Grynagier, Jonathan Grzymisch, Ian Harrison, Gerhard Heinzel, Martin Hewitson, Daniel Hollington, David Hoyland, Mauro Hueller, Henri Inchauspe, Oliver Jennrich, Philippe Jetzer, Ulrich Johann, Bengt Johlander, Nico Karnesis, Natalia Korsakova, Christian Killow, Alberto Lobo, Ivan Lloro, Li Liu, Juan P. Lopez Zaragoza, Rolf Maarschalkerweerd, Davor Mance, Victor Martin, Luis Martin Polo, Joseph Martino, Fernando Martin Porqueras, Sean Madden, Ignacio Mateos, Paul McNamara, Jose Mendes, Luis Mendes, Anneke Monsky, Daniele Nicolodi, Miquel Nofrarias, Sarah Paczkowski, Michael Perreur-Lloyd, Antoine Petiteau, Paolo Pivato, Eric Plagnol, Pierre Prat, Ulrike Ragnit, Boutheina Rais, Juan Ramos Castro, Jens Reiche, David I. Robertson, Hans Rozemeijer, Francisco Rivas, Giuliana Russano, Josep Sanjuan, Paolo Sarra, Alexander Schleicher, Diana Shaul, Jacob Slutsky, Carlos Sopuerta, Ruggero Stanga, Frank Steier, Damien Texier, James I. Thorpe, Christian Trenkel, Hai-Bo Tu, Daniele Vetrugno, Stefano Vitale, Vinzenz Wand, Gudrun Wanner, Henry Ward, C Warren, Peter Wass, David Wealthy, William J. Weber, Lennart Wissel, Andreas Wittchen, Andrea Zambotti, Carlo Zanoni, Tobias Ziegler, Peter Zweifel
We report the first results of the LISA Pathfinder in-flight experiment. The results demonstrate that two free-falling reference test masses, such as those needed for a space-based gravitational wave observatory like LISA, can be put in free fall with a

Methods and Tools for Performance Assurance of Smart Manufacturing Systems

June 2, 2016
Author(s)
Deogratias Kibira, Katherine C. Morris, Senthilkumaran Kumaraguru
The emerging concept of smart manufacturing systems is defined in part by the introduction of new technologies that are promoting rapid and widespread information flow within the manufacturing system and surrounding its control. These systems can deliver
Displaying 676 - 700 of 2714
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