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Displaying 426 - 450 of 143579

Wavemeter calibration by frequency comb

November 7, 2024
Author(s)
Patrick Egan
Upgrades to the vacuum-wavelength calibration service at NIST are reported. The instrumentation centerpiece is an optical frequency comb tied to a GPS-disciplined oscillator, thereby providing direct traceability to the SI second. Historically, the service

Kinetic inductance current sensor for visible to near-infrared wavelength transition-edge sensor readout

November 6, 2024
Author(s)
Paul Szypryt, Douglas Bennett, Ian Fogarty Florang, Joseph Fowler, Jiansong Gao, Andrea Giachero, Ruslan Hummatov, Adriana Lita, John Mates, Sae Woo Nam, Daniel Swetz, Joel Ullom, Michael Vissers, Jordan Wheeler
Single-photon detectors based on the superconducting transition-edge sensor are used in a number of visible to near-infrared applications, particularly for photon-number-resolving measurements in quantum information science. To be practical for large-scale

POTENT: Post-Synthesis Obfuscation for Secure Network-on-Chip Architectures

November 5, 2024
Author(s)
Kostas Amberiadis, Dipal Halder, Sandip Ray, Yuntao Liu, Ankur Srivastava
We develop a novel post-synthesis obfuscation technique, POTENT, to protect NoC fabrics against reverse engineering attacks. POTENT integrates programmable switches at NoC routers, concealing topology and communication paths under a dynamically controlled

Workshop Report on Autonomous Methodologies for Accelerating X-ray Measurements

November 5, 2024
Author(s)
Zachary Trautt, Austin McDannald, Brian DeCost, Howard Joress, A. Gilad Kusne, Francesca Tavazza, Tom Blanton
The National Institute of Standards and Technology and the International Centre for Diffraction Data co-hosted a workshop on 17-18 October 2023 to identify and prioritize the goals, challenges, and opportunities for critical and emerging technology needs

Broadband Characterization of Flexible Conductor-Dielectric Composites

November 4, 2024
Author(s)
Luckshitha Suriyasena Liyanage, Nathan Orloff, Nicholas Jungwirth, Sarah Evans, Christian Long, Angela Stelson, Jacob Pawlik, James Booth
Broadband measurements are important for characterizing a wide range of materials for communications applications at microwave and mm-wave frequencies. Here we report on broadband measurements of the effective permittivity of conductor-dielectric flexible

Prediction of Magnetic Properties in van der Waals Magnets using Graph Neural Networks

November 4, 2024
Author(s)
Kamal Choudhary, Peter Minch, Trevor David Rhone, Romakanta Bhattarai
We study two-dimensional (2D) magnetic materials using state-of-the-art machine learning models that use a graph-theory framework. We find that representing materials as graphs allows us to better learn structure-property relationships by leveraging both

Cybersecurity Supply Chain Risk Management Practices for Systems and Organizations

November 1, 2024
Author(s)
Jon Boyens, Angela Smith, Nadya Bartol, Kris Winkler, Alex Holbrook, Matthew Fallon
Organizations are concerned about the risks associated with products and services that may potentially contain malicious functionality, are counterfeit, or are vulnerable due to poor manufacturing and development practices within the supply chain. These

Two-fluid model for nonlinear flow of wormlike micelle solutions. I: Model

November 1, 2024
Author(s)
Paul Salipante, Michael Cromer, Steven D. Hudson
We develop a rheological model to approximate the nonlinear rheology of wormlike micelles using two constitutive models to represent a structural transition at high shear rates. The model is intended to describe the behavior of semidilute wormlike micellar

Two-fluid model for nonlinear flow of wormlike micelle solutions. II: Experiment

November 1, 2024
Author(s)
Paul Salipante, Michael Cromer, Steven D. Hudson
Applications often expose wormlike micelle solutions to a very wide range of shear and temperature conditions. The two-species model presented in Part I [Salipante et al., J. Rheol. 68 (2024)] describes the nonlinear rheology over a wide range of shear

Appendix F: Software Security in Supply Chains

October 31, 2024
Author(s)
Jon Boyens
The President's Executive Order (EO) on "Improving the Nation's Cybersecurity (14028)" issued on May 12, 2021, charges multiple agencies – including NIST – with enhancing cybersecurity through a variety of initiatives related to the security and integrity

Data needs and challenges for quantum dot devices automation

October 31, 2024
Author(s)
Justyna Zwolak, Jacob Taylor, Reed Andrews, Jared Benson, Garnett Bryant, Donovan Buterakos, Anasua Chatterjee, Sankar Das Sarma, Mark Eriksson, Eliska Greplova, Michael Gullans, Fabian Hader, Tyler Kovach, Pranav S. Mundada, Mick Ramsey, Torbjoern Rasmussen, Brandon Severin, Anthony Sigillito, Brennan Undseth, Brian Weber
Gate-defined quantum dots are a promising candidate system for realizing scalable, coupled qubit systems and serving as a fundamental building block for quantum computers. However, present-day quantum dot devices suffer from imperfections that must be

Base de referencia de las capacidades de apoyo no tecnicas del IoT

October 30, 2024
Author(s)
Michael Fagan, Katerina Megas, Jeffrey Marron, Kevin Brady, Barbara Cuthill, Rebecca Herold
Las capacidades de apoyo no técnicas son acciones que realiza un fabricante o una organización de terceros en apoyo de la seguridad cibernética de un dispositivo de Internet de las cosas (IoT, por sus siglas en inglés). Esta publicación define una línea

Base Principal da Capacidade de Suporte Nao Tecnico da IoT

October 30, 2024
Author(s)
Katerina Megas, Michael Fagan, Jeffrey Marron, Kevin Brady, Barbara Cuthill, Rebbecca Herold
Recursos de suporte não técnicos são ações que um fabricante ou organização terceirizada executa em apoio à segurança cibernética de um dispositivo IoT. Esta publicação define a base principal de recursos de suporte não técnico dos fabricantes de

Economics of Digital Twins: Costs, Benefits, and Economic Decision Making

October 30, 2024
Author(s)
Douglas Thomas
This report examines the economics of digital twins in the manufacturing industry, including the costs, benefits, and economic decision to invest in the adoption of a digital twin. It characterizes the costs and benefits along with the circumstances under

The U.S. Plastics Recycling Economy: Current State, Challenges, and Opportunities

October 30, 2024
Author(s)
Douglas Thomas, Joshua D. Kneifel, David Butry
This report builds upon NIST AMS 100-48 (Thomas 2022), which examined the economics of increased circularity in the economy, focusing on the processes, forces, and decision making that result in an unsustainable economy. This report further discusses the
Displaying 426 - 450 of 143579