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Search Publications

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Displaying 601 - 625 of 143740

Direct Realization of the Optical Watt from Planck's Constant

October 28, 2024
Author(s)
Brian Simonds, Kyle Rogers, Sven Schulze, David Newell, Gordon Shaw, Paul A. Williams
A primary force standard is implemented to directly realize Planck's constant to the optical Watt by means of radiation pressure at the kilowatt level. The high amplification laser-pressure optic, or HALO, is a multiple reflection radiation pressure

Towards a Digital Twin of a Robot Workcell: Standards and Methods

October 28, 2024
Author(s)
Deogratias Kibira, Guodong Shao, Rishabh Venketesh
Digital twins are poised to improve the way products are designed, manufactured, and managed throughout their life cycle. However, implementing digital twins for small and medium manufacturers (SMM) has been a challenge mainly due to lack of resources and

Ultraviolet to Short-Wave Infrared Spectral Reflectance

October 28, 2024
Author(s)
Heather Patrick, Clarence Zarobila
The National Institute of Standards and Technology performs calibrations of spectral reflectance measurements in the ultraviolet (UV) to short-wave infrared (SWIR) spectral regions using the Robotic Optical Scattering Instrument (ROSI) and its associated

Compact Homodyne Extrapolation System (CHEXS)

October 27, 2024
Author(s)
Joshua Gordon, Benjamin Moser
We present on a novel gain extrapolation antenna range, the Compact Homodyne Extrapolation System (CHEXS), that can achieve absolute antenna gain measurements with uncertainties of 0.1 dB or better with as few at 10 data points and is significantly more

Digital Twins for Advanced Manufacturing: The Standardized Approach

October 26, 2024
Author(s)
Guodong Shao, Deogratias Kibira, Simon P. Frechette
Recently, digital twins are becoming more prevalent in a wide range of industries such as manufacturing, construction, smart city, healthcare, business for various purposes including observing, predicting, optimizing, and controlling. However, because

Digital Twins for Robot Systems in Manufacturing

October 26, 2024
Author(s)
Ali Malik, Guodong Shao, Jane Tarakhovsky
The surging demand for industrial automation is propelling the use of robots, with emerging trends like autonomous mobile robots and collaborative robotic arms swiftly gaining widespread popularity. Simultaneously, a growing focus is on simplifying the

A graph-theoretic approach to analyzing decoding failures of BIKE

October 25, 2024
Author(s)
Sarah Arpin, Tyler Raven Billingsley, Daniel Rayor Hast, Jun Bo Lau, Ray Perlner, Angela Robinson
We present experimental findings on the decoding failure rate (DFR) of BIKE, a fourth-round candidate in the NIST Post-Quantum Standardization process, at the 20-bit security level using graph-theoretic approaches. We select parameters according to BIKE

Annual Report on the U.S. Manufacturing Economy: 2024

October 25, 2024
Author(s)
Douglas Thomas
This report provides a statistical review of the U.S. manufacturing industry. There are three aspects of U.S. manufacturing that are considered: (1) how the U.S. industry compares to other countries, (2) the trends in the domestic industry, and (3) the

Design, modeling, and fabrication of high frequency Oersted lines for electron spin manipulation in silicon based quantum devices

October 25, 2024
Author(s)
Pradeep Namboodiri, Mark-yves Gaunin, Alessandro Restelli, Ranjit Kashid, Xiqiao Wang, Fan Fei, Brian Courts, FNU Utsav, Vijith Kamalon Pulikodan, Jonathan Wyrick, Richard M. Silver
Coherent manipulation of electron spins is one of the central problems of silicon-based quantum computing efforts. Electron spin resonance (ESR) lines, or Oersted lines, allow high frequency RF pulses to induce an electromagnetic field that drives Rabi

Maximally efficient exchange in thin flow cells using density gradients

October 25, 2024
Author(s)
Megan Mitchell, Charles Majkrzak, David Hoogerheide
Flow cells are ubiquitous in laboratories and automated instrumentation and are crucial for ease of sample preparation, analyte addition, and buffer exchange. Often, the assumption that the fluids have exchanged completely in a flow cell is crucial to data

On the Design of a Firebrand Generator

October 25, 2024
Author(s)
Jiann Yang
Detailed design principles and calculations based on a generic firebrand generator with configuration commensurate with the NIST Firebrand Generators are provided. The generator is treated as a fluidized-bed reactor operating at the vertical dilute-phase

Progress towards accuracy evaluation of NIST-F4 Cesium fountain clock

October 24, 2024
Author(s)
Vladislav Gerginov, Gregory Hoth, Thomas Heavner, Jeffrey Sherman
This work presents preliminary results towards the evaluation of the NIST-F4 Cesium Primary Frequency Standard. We present measurements of NIST-F4 frequency instability and evaluation of some of its systematic frequency shifts and shift uncertainties.

Status Report on the First Round of the Additional Digital Signature Schemes for the NIST Post-Quantum Cryptography Standardization Process

October 24, 2024
Author(s)
Gorjan Alagic, Maxime Bros, Pierre Ciadoux, David Cooper, Quynh Dang, Thinh Dang, John M. Kelsey, Jacob Lichtinger, Carl A. Miller, Dustin Moody, Rene Peralta, Ray Perlner, Angela Robinson, Hamilton Silberg, Daniel Smith-Tone, Noah Waller, Yi-Kai Liu
The National Institute of Standards and Technology is in the process of evaluating public-key digital signature algorithms through a public competition-like process for potential standardization. Any signature scheme eventually selected would augment

The Global and Local Structure of Medium-Scale Pool Fires

October 24, 2024
Author(s)
Kunhyuk Sung, Ryan Falkenstein-Smith, Matthew Bundy, Marco Fernandez, Anthony Hamins
A series of experiments are reported that characterize key features of the structure of eight medium-scale pool fires (0.3 m to 0. 4 m) burning a variety of liquid and gaseous fuel types, including 30 cm diameter liquid pool fires burning methanol, ethanol

An Evaluation of Methods for Assessing Robot Kinematic Model Accuracy in the Presence of Noise

October 23, 2024
Author(s)
Mitchell R. Woodside, Patrick Bazzoli, Philip A. Olubodun, J. Adam Nisbett, Helen Qiao, Douglas A. Bristow
While there are many works developing methods for modeling and calibrating robot kinematics, assessing the accuracy of those models has received little attention. However, accuracy assessment is critically important for applications where the robot must

Blueprint for Deploying 5G O-RAN Testbeds: A Guide to Using Diverse O-RAN Software Stacks

October 23, 2024
Author(s)
Peng Liu, Kyehwan Lee, Fernando Cintron, Simeon Wuthier, Bhadresh Savaliya, Douglas Montgomery, Richard Rouil
This documentation serves as a blueprint for new researchers, offering a comprehensive guide on establishing an Open Radio Access Network (O-RAN) testbed from scratch. It details the O-RAN architecture and the supporting software stacks required for each
Displaying 601 - 625 of 143740
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