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Search Publications

NIST Authors in Bold

Displaying 9401 - 9425 of 73697

Magnetoelasticity of Co 25 Fe 75 thin films

August 20, 2019
Author(s)
Daniel Schwienbacher, Matthias Pernpeintner, Lukas Liensberger, Eric R. Edwards, Hans Nembach, Justin Shaw, Mathias Weiler, Rudolf Gross, Hans Huebl
We investigate the magnetoelastic properties of Co 25Fe 75 and Co 10Fe 90 thin films by measuring the mechanical properties of a doubly clamped string resonator covered with multilayer stacks containing these films. For the magnetostrictive constants, we

Major improvement of ferroelectric and optical properties in Na-doped Ruddlesden-Popper layered hybrid improper ferroelectric compound, Ca3Ti2O7

August 20, 2019
Author(s)
Cong Hang, Wei Fang Liu, Winnie Wong-Ng, Ziongnan Zhang, Yao Jiang, Ping Wu, Baoyuan Tong, Hui Zhao, Shouyu Wang
Ruddlesden-Popper layered Ca3-xNaxTi2O7 (x=0 and 0.15) ceramics were successfully prepared by a conventional solid-state reaction process. The polarization and leakage currents were increased after Na doping. XPS spectra showed an increasing concentration

Parallel multi-parameter study of PEI-functionalized gold nanoparticle synthesis for bio-medical applications: Part 1. A critical assessment of methodology, properties and stability

August 20, 2019
Author(s)
Tae Joon Cho, Justin M. Gorham, John M. Pettibone, Jingyu Liu, Jiaojie Tan, Vincent A. Hackley
Cationic polyethyleneimine (PEI) conjugated gold nanoparticles (AuNPs) that are chemically and physically stable under physiological conditions are an ideal candidate for certain bio-medical applications, in particular DNA transfection. However, the

The International System of Units (SI), 2019 Edition

August 20, 2019
Author(s)
David Newell, Eite Tiesinga
The definitive international reference on the International System of Units (SI) is a booklet published by the International Bureau of Weights and Measures (BIPM) and often referred to as the BIPM SI Brochure. Entitled Le Systeme International d' Unites

Thermophysical Properties of Polyol Ester Lubricants

August 20, 2019
Author(s)
Thomas J. Bruno, Tara Fortin, Marcia L. Huber, Arno D. Laesecke, Eric Lemmon, Elisabeth Mansfield, Mark O. McLinden, Stephanie L. Outcalt, Richard A. Perkins, Kimberly N. Urness, Jason A. Widegren
This report summarizes the results of work performed for the Naval Air Warfare Center Aircraft Division by the National Institute of Standards and Technology (NIST), Applied Chemicals and Materials Division on the properties of polyol ester lubricants

Mass Spectrometry Fingerprints of Small-Molecule Metabolites in Biofluids. Building a Spectral Library of Recurrent Spectra for Urine Analysis.

August 19, 2019
Author(s)
Yamil Simon, Ramesh Marupaka, Xinjian Yan, Yuxue Liang, Kelly H. Telu, Yuri A. Mirokhin, Stephen E. Stein
A large fraction of ions observed in electrospray liquid chromatography-mass spectrometry (LC-MS) experiments of biological samples remain unidentified. One the main reasons for this is that spectral libraries of pure compounds fail to account for the

Modeling a Supply Chain Reference Ontology Based on a Top-Level Ontology

August 19, 2019
Author(s)
Boonserm Kulvatunyou, Farhad Ameri
Several ontologies have been introduced in the domain of supply chain over the past decade with the promise of enabling a true supply chain interoperability. However, the existing supply chain ontologies have several gaps with respect to completeness

Sequential and one-pot post-polymerization modification reactions of thiolactone-containing polymer brushes

August 19, 2019
Author(s)
Cassandra M. Reese, Brittany J. Thompson, Phillip K. Logan, Christopher Stafford, Derek L. Patton, Michael Blanton
Thiolactone chemistry has garnered significant attention as a powerful post-polymerization modification (PPM) route to mutlifunctional polymeric materials. Here, we apply this versatile chemistry to the fabrication of ultrathin, multifunctional polymer

Spin Scattering and Noncollinear Spin Structure-Induced Intrinsic Anomalous Hall Effect in Antiferromagnetic Topological Insulator MnBi 2 Te 4

August 19, 2019
Author(s)
Seng Huat Lee, Yanglin Zhu, Yu Wang, Leixin Miao, Timothy Pillsbury, Hemian Yi, Susan Kempinger, Jin Hu, Colin A. Heikes, Patrick Quarterman, William D. Ratcliff, Julie Borchers, Heda Zhang, Xianglin Ke, David Graf, Nasim Alem, Cui-Zu Chang, Nitin Samarth, Zhiqiang Mao
MnBi 2Te 4 has recently been established as an intrinsic antiferromagnetic (AFM) topological insulator - an ideal platform to create quantum anomalous Hall (QAH) insulator and axion insulator states. We performed comprehensive studies on the structure

A Standardized Representation of Convolutional Neural Networks for Reliable Deployment of Machine Learning Models in the Manufacturing Industry

August 18, 2019
Author(s)
Max K. Ferguson, Seongwoon Jeong, Kincho H. Law, Anantha Narayanan Narayanan, Svetlana Levitan, Jena Tridivesh, Yung-Tsun Lee
The use of deep convolutional neural networks is becoming increasingly popular in the engineering and manufacturing sectors. However, managing the distribution of trained models is still a difficult task, partially due to the limitations of standardized

Mass Spectrometry Fingerprints of Small-Molecule Metabolites in Biofluids: Building a Spectral Library of Recurrent Spectra for Urine Analysis

August 18, 2019
Author(s)
Yamil Simon, Ramesh Marupaka, Xinjian Yan, Yuxue Liang, Kelly H. Telu, Yuri Mirokhin, Stephen E. Stein
A large fraction of ions observed in electrospray liquid chromatography–mass spectrometry (LC–ESI-MS) experiments of biological samples remain unidentified. One of the main reasons for this is that spectral libraries of pure compounds fail to account for

Nearly Ferromagnetic Spin-Triplet Superconductivity

August 18, 2019
Author(s)
Sheng N. Ran, Christoper Eckberg, Qing-Ping Ding, Yuji Furukawa, Tristin Metz, Shanta R. Saha, I Lin NMN Liu, Mark Zic, Hyunsoo Kim, Johnpierre N. Paglione, Nicholas Butch
One of the most interesting differences between spin triplet superconductors and the conventional spin singlet variety is the two-component triplet order parameter that allows spin up and down electrons to couple with different strength. Such nonunitary

A Review Of Machine Learning Applications In Additive Manufacturing

August 17, 2019
Author(s)
Saadia A. Razvi, Shaw C. Feng, Anantha Narayanan Narayanan, Yung-Tsun Lee, Paul Witherell
Variability in product quality continues to pose a major barrier to the widespread application of additive manufacturing (AM) processes in production environment. Towards addressing this barrier, the monitoring of AM processes and the measuring of AM

Upper Bounds on the Multiplicative Complexity of Symmetric Boolean Functions

August 17, 2019
Author(s)
Luis Brandao, Cagdas Calik, Meltem Sonmez Turan, Rene Peralta
A special metric of interest about Boolean functions is multiplicative complexity (MC): the minimum number of AND gates sufficient to implement a function with a Boolean circuit over the basis XOR, AND, NOT}. In this paper we study the MC of symmetric

An atomic sensor for direct detection of weak microwave signals

August 16, 2019
Author(s)
Vladislav Gerginov, Fabio C. da Silva, Craig Nelson, Archita Hati
This paper demonstrates direct detection of weak signals at microwave frequencies based on parametric frequency conversion. The atomic medium is optically pumped by a resonant light field and prepared in a coherent atomic superposition by a weak microwave

Liquid Viscosity and Surface Tension of n-Hexane, n-Octane, n-Decane, and n-Hexadecane up to 573 K by Surface Light Scattering (SLS)

August 16, 2019
Author(s)
Tobias Klein, Shaomin Yan, Junwei Cui, Joe W. Magee, Kenneth Kroenlein, Michael H. Rausch, Thomas M. Koller, Andreas P. Froba
In the present study, the simultaneous and accurate determination of liquid viscosity and surface tension of the n-alkanes n-hexane (n-C6H14), n-octane (n-C8H18), n-decane (n-C10H22), and n-hexadecane (n-C16H34) by surface light scattering (SLS) in

LTE Handset Emissions: Radiation Pattern Measurements Final Test Report

August 16, 2019
Author(s)
Robert D. Horansky, Jason B. Coder, John M. Ladbury
The Defense Information Systems Agency (DISA) Defense Spectrum Organization (DSO) throughthe Spectrum Sharing Test and Development (SSTD) program proposed a National AdvancedSpectrum and Communications Test Network (NASCTN) measurement campaign to

Modification of Spin-Ice Physics in Ho 2 Ti 2 O 7 Thin Films

August 16, 2019
Author(s)
Kevin Barry, Biwen Zhang, Naween Anand, Yan Xin, Arturas Vailionis, Jennifer Neu, Colin A. Heikes, Charis Cochran, Haidong Zhou, Yiming Qiu, William D. Ratcliff, Theo Siegrist, Christianne Beekman
We report on a study of the structural and magnetic properties of strained Ho 2Ti 2O 7 thin films. Structural characterization via synchrotron x-ray diffraction confirms good crystallinity of our films and shows a critical thickness slightly below 50 nm

Towards Cross-Layer Optimization of Virtualized Radio Access Networks

August 15, 2019
Author(s)
Vladimir Marbukh, Kamran Sayrafian, Behnam Rouzbehani, Luis Correia
This paper proposes an approach to cross-layer optimization of virtualized Radio Access Network resources in future mobile communications. Assuming that the Virtual Network Operators (VNOs) guarantee contracted Service Level Agreements (SLAs) with the

TOWARDS EFFICIENT THERMAL SIMULATION OF POWDER BED FUSION ON PATH LEVEL

August 15, 2019
Author(s)
Paul W. Witherell
As a widely used additive manufacturing (AM) technology to produce metallic parts, powder bed fusion (PBF) is driven by a moving heat source. Thermal simulation is a critical tool to understand the mappings between manufacturing parameters (e.g. laser

A Modelling Framework for Householder Decision-Making for Wildfire Emergencies

August 14, 2019
Author(s)
Ruggiero Lovreglio, Erica D. Kuligowski, Steve Gwynne, Ken Strahan
The occurrence of wildfire threats has dramatically increased in the last few decades creating serious challenges for hundreds of thousands of communities around the world. Understanding the physical and social dynamics characterizing wildfires is
Displaying 9401 - 9425 of 73697
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