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NIST Authors in Bold

Displaying 3651 - 3675 of 73697

An SDR-Based Performance Measurement of LTE and WLAN Coexistence

September 12, 2022
Author(s)
Nadia Yoza Mitsuishi, Yao Ma, Jason Coder
In this paper, we report on a software-defined radio (SDR) based test setup to emulate and evaluate the performance of a few wireless coexistence scenarios. The first case we study consists of two long-term evolution (LTE) downlink channels from adjacent

Are additive manufacturing systems accurately delivering laser power?

September 12, 2022
Author(s)
Brian Simonds, Kyle Rogers, Paul A. Williams
At the core of most metal additive manufacturing (AM) systems is a high-power (100-1000 W) laser. The delivered light energy drives the entire AM process by determining the melt volume and maximum temperature, which ultimately dictates solidification and

New Bounds on the Multiplicative Complexity of Boolean Functions

September 11, 2022
Author(s)
Meltem Sonmez Turan
Multiplicative Complexity (MC) is defined as the minimum number of AND gates required to implement a function with a circuit over the basis AND, XOR, NOT}. This complexity measure is relevant for many advanced cryptographic protocols such as fully

Structural and electronic properties of Cu3InSe4

September 11, 2022
Author(s)
Oluwagbemiga Ojo, Winnie Wong-Ng, Teiyan Chang, Yu-Sheng Chen, George S. Nolas
Single crystals of the previously unascertained ternary chalcogenide Cu3InSe4 were obtained by induction melting, allowing for a complete investigation of the crystal structure by employing high-resolution single-crystal synchrotron X-ray diffraction

The Strategy for American Leadership in High-Consequence Additive Manufacturing

September 9, 2022
Author(s)
Mark Benedict, Shawn P. Moylan, Souhail Al-Abed, Cindy Ashforth, Y. Kevin Chou, Matthew Di Prima, Alaa Elwany, Michael Gorelik, Astrid Lewis, Todd Luxton, Blake Marshall, William Mullins, Linda Sapochak, Richard Russell, James A. Warren, Douglas Wells
Over the past decade, a consistent theme in enhancing U.S. global competitiveness has been the need for U.S. leadership in critical advanced manufacturing technologies. Additive manufacturing (AM), also known as 3D Printing, has been among those critical

Digital Evidence Preservation: Considerations for Evidence Handlers

September 8, 2022
Author(s)
Barbara Guttman, Douglas R. White, Shannan Williams, Tracy Walraven
The preservation of digital evidence (DE) presents unique problems beyond traditional evidence preservation. This document addresses considerations related to the preservation of digital evidence. This document is part of a series on evidence management

Size and Number Concentration Measurements of Polystyrene Nanoparticle Suspensions using Several Different Techniques

September 8, 2022
Author(s)
Paul DeRose, Kurt D. Benkstein, Elzafir B. Elsheikh, Adolfas K. Gaigalas, Sean Lehman, Dean Ripple, Linhua Tian, Wyatt Vreeland, Adam York, Yu-Zhong Zhang, Hao-Wei Wang
The number concentrations of nominal 100 nm, 200 nm and 500 nm diameter, fluorescently-labeled polystyrene nanosphere suspensions were measured using seven different techniques. Diameter values were also measured where possible. The diameter values were

Sub-recoil clock-transition laser cooling enabling shallow optical lattice clocks

September 8, 2022
Author(s)
Xiaogang Zhang, Kyle Beloy, Youssef Hassan, William McGrew, Chun-Chia Chen, Jacob Siegel, Tanner Grogan, Andrew Ludlow
Laser cooling is a key ingredient for quantum control of atomic systems in a variety of settings. In two-valence-electron atoms, two-stage Doppler cooling is typically used to bring atoms to the μK regime. Here, we implement a pulsed radial cooling scheme

Biomanufacturing Readiness Levels (BRL) - A Shared Vocabulary for Biomanufacturing Technology Development and Commercialization

September 7, 2022
Author(s)
John E. Schiel, Kelley Rogers, Sandeep Kedia, Jeffery Baker, Ruben Carbonell, Kelvin Lee, Christopher Roberts, John Erickson, Gene Schaefer, Stephanie Pluschkell
The Manufacturing Readiness Levels (MRLs) developed by the Department of Defense (DoD), are well established tools for describing the maturity of new technologies resulting from government sponsored Research and Development (R&D) programs, from the concept

Energy Broadening of Neutron Depth Profiles by Thin Polyamide Films

September 7, 2022
Author(s)
Jamie Weaver, Anna Job, Kedar Manandhar, Ichiro Takeuchi, Robert Gregory Downing
A protective covering is often required for neutron depth profiling (NDP) measurements of sensitive materials (e.g., Li-ion batteries). Addition of this layer can increase NDP profile energy broadening and depth assignment uncertainty. This study evaluates

Improved Uranium Particle Analysis by SIMS using O3- Primary Ions

September 6, 2022
Author(s)
Evan Groopman, Todd Williamson, David S. Simons
We have investigated the use of negative molecular oxygen primary ion beams (i.e., O2- and O3-) to determine the benefits of using such beams for uranium particle SIMS analyses. Typically, O- is the most practical negative primary ion species for both age

N-DISE: NDN-Based Data Distribution for Large-Scale Data-Intensive Science

September 6, 2022
Author(s)
Edmund Yeh, Harvey Newman, Lixia Zhang, Jason Cong, Susmit Shannigrahi, Yuanhao Wu, Catalin Iordache, Volkan Mutlu, Sankalpa Timilsina, Sichen Song, Michael Lo, Ran Liu, Chengyu Fan, Raimondas Sirvinskas, Justas Balcas, Yuezhou Liu, Davide Pesavento, Junxiao Shi, Lotfi Benmohamed
To meet unprecedented challenges faced by the world's largest data- and network-intensive science programs, we design and implement a new, highly efficient and field-tested data distribution, caching, access and analysis system for the Large Hadron

Maximizing Harvested Energy in Coulomb Force Parametric Generators

September 5, 2022
Author(s)
Masoud Roudneshin, Kamran Sayrafian, Amir Aghdam
Miniaturized wearable or implantable medical sensors are becoming an important application area for kinetic-based micro energy-harvesters. These harvesters can generate power through the natural human body motion. The architecture based on the Coulomb

Effect of network connectivity on behavior of synthetic Broborg Hillfort glasses

September 2, 2022
Author(s)
Jose Marcial, Maria Cicconi, Carolyn Pearce, Jaroslav Klouzek, James Neeway, Richard Pokorny, Miroslava Vernerova, John McCloy, Emily Nienhuis, Rolf Sjoblom, Jamie Weaver, Russell Hand, Pavel Hrma, Albert Kruger
There is wide industrial interest in developing robust models of long-term (>100years) glass durability. Archeological glass analogs, glasses of similar composition, and alteration conditions to those being tested for durability can be used to evaluate and
Displaying 3651 - 3675 of 73697
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