An official website of the United States government
Here’s how you know
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.
Metal additive manufacturing machines are complex and inherently digital and often cyber-physical systems. As the adoption of this manufacturing technology
Detailed design principles and calculations based on a generic firebrand generator with configuration commensurate with the NIST Firebrand Generators are
The National Institute of Standards and Technology (NIST) has offered remote time and frequency calibration services since the late 1980s. At that time, the
A potential source of frequency bias in atomic fountains is due to atomic interactions with microwave fields outside of the resonant cavity used for Ramsey
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
Jiarui Xie, Chun-Chun Hu, Haw-Ching Yang, Yaoyao Fiona Zhao, Zhuo Yang, Yan Lu
Powder bed fusion (PBF) is an emerging metal additive manufacturing (AM) technology that enables rapid fabrication of complex geometries. However, defects such
The rapid expansion of the manufacturing sector has brought laser-based metal additive manufacturing, like laser powder bed fusion, to the forefront of
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
Wai Cheong Tam, Jian Chen, Wei Tang, Qi Tong, Hongqiang Fang, Anthony Putorti
This paper presents the development of a fast-responding and accurate detection model for early-stage thermal runaway of a lithium-ion battery utilizing
Karen De Lannoye, Isaac Leventon, Lucie Hasalova, Alexander Belt, Ernst-Arndt Reinecke, Lukas Arnold
16 Cone calorimetry and anaerobic gasification experiments are often used to assess material 17 flammability of bench-scale (coupon sized) samples in response
A refractive-index gas thermometer has been used to determine T − T90 in the temperature range (293 T 433) K within about 3 µK/K relative standard uncertainty
Tanguy Ropitault, Anirudha Sahoo, Steve Blandino, Nada Golmie
Accurately assessing the number of people in a room is essential for enhancing operational efficiency, safety, and sustainability, enabling applications such as
Theodore Jensen, Mary Frances Theofanos, Kristen K. Greene, Olivia Williams, Kurtis Goad, Janet Bih Fofang
The increasing prevalence of artificial intelligence (AI) will likely lead to new interactions and impacts for the general public. An understanding of people's
Measurement of oscillating mass flows is typically required for the study of cryocoolers and cryocooler compressors. Although many measurement techniques are
Yong Han Kim, Sidi Deng, Thomas Maani, Nehika Mathur, Matthew Triebe, John Sutherland
The manufacturing industry holds a significant position in the U.S. economy, simultaneously contributing to a substantial share of energy and material usage, as
Aric Sanders, Michelle Pirrone, Keith Forsyth, Adam Wunderlich
Interference between communication systems is a critical issue that can impact performance and operability of devices. A wide range of methods and testbeds have
Michelle Pirrone, Jordan Bernhardt, Adam Wunderlich
We demonstrate a general-purpose approach to evaluate interference immunity at the transmitter (data payload source) of a 'closed-box' wireless communication
Jacob Edmond Ricker, Kevin Douglass, Jay H. Hendricks, Sarah White
NIST has tested a prototype portable quantum traceable pressure standard for the calibration of pressure gauges. The low-pressure limit of this device was
Anirudha Sahoo, Tanguy Ropitault, Steve Blandino, Nada Golmie
Wi-Fi sensing has been used to detect and track movements in an environment, resulting in the emergence of several innovative applications. Wi-Fi sensing can
Jerome Cheron, Robert Jones, Bryan Bosworth, Jeffrey Jargon, Benjamin Jamroz, Ari Feldman
We report accurate small-signal measurements of heterojunction-bipolar-transistors (HBTs) that are characterized with two on-wafer multiline thru-reflect-line
Ulf Griesmann, Keiko Munechika, Simon Rochester, Weilun Chao, Carlos Pina-Hernandez, Kaito Yamada, Michael Biskach, Peter Takacs, Valeriy Yashchuk
Binary pseudo-random array (BPRA) "white noise" artifacts are highly effective for characterizing the instrument transfer function (ITF) of surface topography
Reliable voice and data communications are critical in supporting public safety responders during incidents and disasters and will become more important as
Uncrewed Systems are becoming both increasingly connected and increasingly automated. With these increases come significant changes in the Cybersecurity and AI
The thermodynamic superheat limits of five solvents commonly used in Li-ion batteries are calculated using the Peng-Robinson equation of state. The superheat
A new nuisance test was introduced to the ANSI/UL 217 Standard for Safety Smoke Alarms with a broiling hamburgers cooking scenario. This study examines alarms
With the globalization of hardware manufacturing and the growing demand for electronics, companies now heavily rely on offshore facilities for most of the
Machine learning (ML)-based Artificial Intelligence (AI) systems rely on training data to perform optimally, but the internal workings of how ML models learn
New smoke alarms that have passed the new broiling hamburger nuisance test introduced in ANSI/UL 217 Standard for Safety Smoke Alarms 8th Edition have reached
As a foundation of digital transformation, digital twins are critical for achieving smart manufacturing. Recent technology advancements, such as smart sensors