U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 1201 - 1225 of 143714

Laser tracker and terrestrial laser scanner range error evaluation by stitching

May 7, 2024
Author(s)
Balasubramanian Muralikrishnan, Braden Czapla, Vincent Lee, Craig Shakarji, Daniel S. Sawyer, Saure Matthias
Laser trackers (LTs) are dimensional measurement instruments commonly employed in the manufacture and assembly of large structures. Terrestrial laser scanners (TLSs) are a related class of dimensional measurement instruments more commonly employed in

Recovery pathway assessment of recycled HDPE for circular economy: Shorter-life vs longer-life products

May 7, 2024
Author(s)
Buddhika Hapuwatte, Ashley Hartwell, Matthew Triebe, Abheek Chatterjee, Nehika Mathur, Daniel Figola, Katherine Morris
High Density Polyethylene (HDPE) is a highly recyclable thermoplastic comprising 17% of all plastic produced. Yet, demand for recycled HDPE (r-HDPE) has outrun availability, partly due to manufacturers' interest in meeting sustainability goals and recycled

Inconclusive Decisions and Error Rates in Forensic Science

May 4, 2024
Author(s)
Henry Swofford, Steven Lund, Hariharan K. Iyer, John Butler, Johannes A. Soons, Robert M. Thompson, Vincent Desiderio, JP Jones, Robert Ramotowski
In recent years, there has been discussion and controversy relating to the treatment of inconclusive decisions in forensic feature comparison disciplines when considering the reliability of examination methods and results. In this article, we offer a brief

Inconclusive Decisions and Error Rates in Forensic Science

May 4, 2024
Author(s)
Henry Swofford, Steven Lund, Hariharan Iyer, John Butler, Johannes Soons, Robert Thompson, Vincent Desiderio, JP Jones, Robert Ramotowski
Conference Presentation based on technical paper in ERB (Control Number: N2024-0457).

Interfacial Magnetic Characteristics of Nearly Compensated Gadolinium Iron Garnet

May 4, 2024
Author(s)
Karthik Srinivasan, Alexander Grutter, Thomas Gage, P. Quarterman, Christy Kinane, Andrew Caruana, Guichuan Yu, Javier Garcia-Barriocanal, Sean Langridge, Bethanie Stadler
Reports on spin Hall magnetoresistance, magnonic spin currents from thermal gradients, and spin transfertorque magnetic random-access memory using compensated ferrimagnets largely discuss bulk magnetization but lack consideration of depth profiles or

The Simons Observatory: Production-Level Fabrication of the Mid- and Ultra-High-Frequency Wafers

May 4, 2024
Author(s)
Shannon Duff, Jason Austermann, James Beall, David Daniel, Johannes Hubmayr, Gregory Jaehnig, Bradley Johnson, Dante Jones, Michael J. Link, Tammy Lucas, Rita Sonka, Suzanne Staggs, Joel Ullom, Yuhan Wang
The Simons Observatory (SO) is a cosmic microwave background instrumentation suite in the Atacama Desert of Chile. More than 65,000 polarization-sensitive transition-edge sensor (TES) bolometers will be fielded in the frequency range spanning 27 to 280 GHz

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

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
Displaying 1201 - 1225 of 143714
Was this page helpful?