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Search Publications

NIST Authors in Bold

Displaying 1526 - 1550 of 73697

An Interlaboratory Study for Assessing Repeatability and Reproducibility of the Data Generated by Rotating Drum Powder Rheometers Part 1: Granudrum

May 3, 2024
Author(s)
Vipin Tondare, Justin Whiting, Adam L. Pintar, Shawn P. Moylan, Aurelien Neveu, Filip Francqui
The National Institute of Standards and Technology (NIST) organized an interlaboratory study to assess the repeatability and reproducibility of the data generated by two commercially available rotating drum powder rheometers namely, Granudrum and

Collection Methods for High-SNR I/Q Recordings of FDD LTE User Equipment Emissions

May 3, 2024
Author(s)
Keith Forsyth, Aric Sanders, Dan Kuester, Adam Wunderlich
This report documents collection methods for high signal-to-noise ratio (SNR) in-phase and quadrature (I/Q) radio frequency (RF) recordings of long-term evolution (LTE) uplink emissions from a commercial-off-the-shelf (COTS) handset in a fully conducted

Assured Autonomy through Combinatorial Methods

May 2, 2024
Author(s)
David Kuhn, M S Raunak, Raghu Kacker, Jaganmohan Chandrasekaran, Erin Lanus, Tyler Cody, Laura Freeman
Autonomous systems are proliferating rapidly, with strong interest in everything from vacuum cleaners and lawnmowers, to self-driving cars and autonomous farm equipment. Can these systems be trusted to function safely? Many conventional software

Decarbonizing the Economy: Circularizing Solar Photovoltaics

May 2, 2024
Author(s)
Nehika Mathur
Solar photovoltaics (PVs) are the fastest growing clean energy technology. As the first generation of solar PVs reach the end of their functional lives, it is becoming clear that unless strategies to manage discarded panels are implemented, we could be

Dissemination of UTC(NIST) over 20 km of commercial optical fiber with active phase stabilization

May 2, 2024
Author(s)
Jacob VanArsdale, Matthew J. Deutch, Michael A. Lombardi, Glenn Nelson, Jeffrey Sherman, James Spicer, William Yates, Dylan Yost, Samuel Brewer
We demonstrate the transfer of a cesium frequency standard steered to UTC(NIST) over 20 km of dark telecom optical fiber. Our dissemination scheme uses an active stabilization technique with a phase-locked voltage-controlled oscillator. Out-of-loop

Important consideration when expressing mAbs in Escherichia coli

May 2, 2024
Author(s)
William Siegall, Zvi Kelman
Monoclonal antibodies (mAbs) are a driving force in the biopharmaceutical industry. The production of therapeutic mAbs is primarily done in mammalian cells, but recently there has been a push towards the use of alternative production hosts including

Independent Rydberg atom sensing using a dual-ladder scheme

May 2, 2024
Author(s)
Samuel Berweger, Alexandra Artusio-Glimpse, Nikunjkumar Prajapati, Andrew Rotunno, Noah Schlossberger, Dangka Shylla, kaitlin moore, Matthew Simons, Christopher Holloway
Rydberg atom-based electric field sensing can provide all-optical readout of radio frequency fields in a dielectric environment. However, because a single set of optical fields is typically used to prepare the Rydberg state and read out its response to RF

Synchronized source of indistinguishable photons for quantum networks

May 2, 2024
Author(s)
Nijil Lal Cheriya Koyyottummal, Ivan Burenkov, Ya-Shian Li-Baboud, Jabir Marakkarakath Vadakkepurayil, Paulina Kuo, Thomas Gerrits, Oliver T. Slattery, Sergey Polyakov
We present a source of indistinguishable photons at telecom wavelength, synchronized to an external clock, for the use in distributed quantum networks. We characterize the indistinguishability of photons generated in independent parametric down-conversion

Understanding the Origin and Implication of the Indirect-to-Direct Bandgap Transition in Multilayer InSe

May 2, 2024
Author(s)
Nicholas Pike, Ruth Pachter, Michael Altvater, Chris Stevens, Matthew Klein, Joshua Hendrickson, Huairuo Zhang, Sergiy Krylyuk, Albert Davydov, Nicholas Glavin
Indium selenide (InSe) multilayers have attracted much interest recently due to their electronic and optical properties, partially dependent on the existence of an indirect-to-direct bandgap transition that is correlated to the multilayer thickness. In

Assessment of the Retrospective and Prospective Economic Impacts of Investments in U.S. Neutron Research Sources and Facilities from 1960 to 2030

May 1, 2024
Author(s)
Amanda Walsh, Sara Nienow, Jonathan Merker, Emily Decker, Claire Strack, Marwa Salem, Gray Martin, Brooke Shaw
RTI International received funding from the National Institute of Standards and Technology (NIST) to conduct a study on the retrospective and prospective economic impacts of investments in U.S. neutron scattering research facilities from 1960 through 2030

Index of Refraction of Liquid Water

May 1, 2024
Author(s)
Allan H. Harvey
This is an item for the CRC Handbook of Chemistry and Physics (105th ed.), giving values calculated from the IAPWS formulation for the refractive index.

Nondestructive, Longitudinal, 3D Cell Viability Assessment in a Multi-well Plate System Using Electron Paramagnetic Resonance Oxygen Imaging

May 1, 2024
Author(s)
Safa Hameed, Navin Viswakarma, Eliyas Siddiqui, Greta Babakhanova, Carl Simon Jr., Boris Epel, Mrignayani Kotecha
Cell viability is an essential measurement for cell therapy, tissue engineered medical products (TEMPs), drug development, and many other biological processes and products. These systems rely on viable, healthy, and functional cells to work as intended

Overview of TREC 2023

May 1, 2024
Author(s)
Ian Soboroff
TREC 2023 is the thirty-second edition of the Text REtrieval Conference (TREC). The main goal of TREC is to create the evaluation infrastructure required for large-scale testing of information retrieval (IR) technology. This includes research on best

The NIST Material Flammability Database

May 1, 2024
Author(s)
Isaac Leventon, Morgan Bruns, Michael Heck
7 The fire modeling community is actively working to develop the tools needed to quantitatively predict material 8 and product flammability behavior (e.g., ignition, burning rate, fire growth). Such predictions require accurate 9 and efficient simulation

Thermoreversible gels of hollow silica nanorod dispersions

May 1, 2024
Author(s)
Haesoo Lee, KHUSHBOO SUMAN, David Moglia, Ryan Murphy, Norman Wagner
Colloidal suspensions of anisotropic particles are ubiquitous in particle-based industries. Consequently, there is a need to quantify the effects of particle shape on equilibrium phases and kinetic state transitions, particularly at lower aspect ratios (L

Working equation for a Fabry-Perot cavity based optical pressure standard

May 1, 2024
Author(s)
Yuanchao Yang, Patrick Egan, Tom Rubin
From basics of Fabry-Perot (FP) resonator and roundtrip phase, a complete working equation for a FP cavity based optical pressure standard (OPS) is derived and presented which includes corrections of reflection phase-shift, diffraction and pressure-induced

A reproducibility study of graph neural networks for materials property prediction

April 30, 2024
Author(s)
Kangming Li, Brian DeCost, Kamal Choudhary, Jason Hattrick-Simpers
Use of machine learning has been increasingly popular in materials science as data-driven materials discovery is becoming the new paradigm. Reproducibility of findings is paramount for promoting transparency and accountability in research and building

Microstructural effects on the rotating bending fatigue behavior of Ti-6Al-4V produced via laser powder bed fusion with novel heat treatments

April 30, 2024
Author(s)
Nicholas Derimow, Jake Benzing, David Newton, Chad Beamer, Ping Lu, Frank DelRio, Newell Moser, Orion Kafka, Ryan Fishel, Lucas Koepke, Chris Hadley, Nik Hrabe
The rotating bending fatigue (RBF) behavior (fully reversed, R = -1) of additively manufactured (AM) Ti-6Al-4V alloy produced via laser powder bed fusion (PBF-L) was investigated with respect to different microstructures achieved through novel heat

Nanoscale Three-Dimensional Imaging of Integrated Circuits Using a Scanning Electron Microscope and Transition-Edge Sensor Spectrometer

April 30, 2024
Author(s)
Nathan Nakamura, Paul Szypryt, Amber Dagel, Bradley Alpert, Douglas Bennett, W.Bertrand (Randy) Doriese, Malcolm Durkin, Joseph Fowler, Dylan Fox, Johnathon Gard, Ryan Goodner, James Zachariah Harris, Gene C. Hilton, Edward Jimenez, Burke Kernen, Kurt Larson, Zachary H. Levine, Daniel McArthur, Kelsey Morgan, Galen O'Neil, Christine Pappas, Carl D. Reintsema, Dan Schmidt, Peter Schulz, Daniel Swetz, Kyle Thompson, Joel Ullom, Leila R. Vale, Courtenay Vaughan, Christopher Walker, Joel Weber, Jason Wheeler
X-ray nanotomography is a powerful tool for the characterization of nanoscale materials and structures, but it is difficult to implement due to the competing requirements of X-ray flux and spot size. Due to this constraint, state-of-the-art nanotomography
Displaying 1526 - 1550 of 73697
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