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Search Publications

NIST Authors in Bold

Displaying 426 - 450 of 73802

Investigating the factors that influence 3D stereo depth sensor noise

April 18, 2025
Author(s)
Terrence Pierce, Prem Rachakonda
3D stereo depth sensors have a variety of applications, including sensing for autonomous vehicles, reverse engineering, and manufacturing automation. The performance of these sensors can be affected by various factors, such as sensor construction, sensor

The NIST Cybersecurity Framework (CSF) 2.0 (Thai translation)

April 18, 2025
Author(s)
Cherilyn Pascoe, Stephen Quinn, Karen Scarfone
The NIST Cybersecurity Framework (CSF) 2.0 provides guidance to industry, government agencies, and other organizations to manage cybersecurity risks. It offers a taxonomy of high-level cybersecurity outcomes that can be used by any organization —

Compact Blackbody Radiation Atomic Sensor: Measuring Temperature using Optically Excited Atoms in Vapor Cells

April 17, 2025
Author(s)
David La Mantia, Mingxin Lei, Nikunjkumar Prajapati, Noah Schlossberger, Matthew Simons, Christopher Holloway, Julia Scherschligt, Stephen Eckel, Eric Norrgard
We demonstrate a blackbody radiation thermometer based on optically excited rubidium atoms in a vapor cell. Operating as a calibrated contact thermometer from 308K to 343 K, we realize temperature uncertainty as low as 0.04 %, and statistical temperature

Charge-exchange processes in EBIT: implications for spectral analysis of few-electron Fe ions

April 16, 2025
Author(s)
Yang Yang, FNU Dipti, Amy Gall, Nancy Brickhouse, Hunter Staiger, Galen O'Neil, Paul Szypryt, Adam Foster, David Schultz, Aung Naing, Joseph Tan, Daniel Swetz, Michael Fogle, Randall Smith, Yuri Ralchenko, Endre Takacs
Charge-exchange recombination with neutral atoms significantly influences the ionization balance in electron beam ion traps (EBIT) because its cross section is relatively large compared to cross sections of electron collision induced processes. Modeling

Contributions of argon, nitrogen, and oxygen to air broadening in the oxygen A-band

April 16, 2025
Author(s)
Leah Stevenson, Mitchio Okumura, Joseph Hodges, Erin Adkins
The oxygen (O2) A-band is used to determine the air mass in ground- and space-based remote sensing measurements because the O2 mixing ratio in Earth's atmosphere is constant. Because errors in the retrieved air mass propagate to measurements of target gas

Wind-Driven Fire Spread to a Structure from Landscape Timbers

April 16, 2025
Author(s)
Erik Johnsson, Kathryn Butler, Marco Fernandez, Wei Tang, Shonali Nazare, Philip Deardorff, Sebastian Arana, Alexander Maranghides
NIST is studying how combustible landscape features around a home burn to better understand their levels of hazard and potential roles in spreading wildland-urban interface (WUI) fires. A series of field experiments was conducted to examine the effects of

Controlling Doping Levels of n-PBDF Through Chemical Dedoping and Doping

April 15, 2025
Author(s)
Zhifan Ke, Lucas Flagg, Dean DeLongchamp, jianguo mei
Doping levels of conjugated polymers determine their conductivity, energetics, and optical properties. The recent discovery of highly conductive n-doped Poly (3,7-dihydrobenzo[1,2-b:4,5-b′]difuran-2,6-dione) (n-PBDF) has opened new possibilities for n-type

Data Frequency Coverage Impact on AI Performance

April 15, 2025
Author(s)
Erin Lanus, Brian Lee, Jaganmohan Chandrasekaran, Laura Freeman, M S Raunak, Raghu Kacker, David Kuhn
Artificial Intelligence (AI) models use statistical learning over data to solve complex problems for which straightforward rules or algorithms may be difficult or impossible to design; however, a side effect is that models that are complex enough to

Global Burning Properties of Little Bluestem, Excelsior and Douglas Fir

April 15, 2025
Author(s)
Kunhyuk Sung, Eric Mueller, Matthew Bundy, Marco Fernandez, Anthony Hamins
A series of experiments were conducted to better understand the burning characteristics of three types of vegetative fuels: Little Bluestem grass, Douglas fir trees, and Excelsior. The measurements included the transient heat release rate (HRR) determined

XTDB, an XML based format for Calphad databases

April 15, 2025
Author(s)
Bo Sundman, Fabio Miani, Axel van de Walle, Bengt Hallstedt, Ursula Kattner, Florian Tang, Taichi Abe, Reza Naraghi, Erwin Povoden-Karadeniz, Aurelie Jacob, Shuanglin Chen, Richard Otis, Kazuhisa Shobu, Malin Selleby, Alexander Pisch
The Calphad method uses models which depend on assessed parameters to describe the thermodynamic properties of materials. These model parameters are assessed by researchers and students mainly from experimental data on binary and ternary systems which can

Guia Breve sobre la Incertidumbre de Medicion

April 14, 2025
Author(s)
Antonio Possolo, Maria Victoria Gelabert, David Hibbert, Jurgen Stohner, Olha Bodnar, Juris Meija
Esta Guía Breve reintroduce a los lectores en los principales conceptos y herramientas técnicas utilizadas para la evaluación y expresión de la incertidumbre de medición, incluyendo métodos estadísticos clásicos y bayesianos. El enfoque general es el mismo

Efficient Energy Transfer and Photoluminescence Enhancement in 2D MoS2/bulk InSe van der Waals Heterostructures

April 13, 2025
Author(s)
Michael Altvater, Christopher Stevens, Nicholas Pike, Joshua Hendrickson, Rahul Rao, Sergiy Krylyuk, Albert Davydov, Deep Jariwala, Ruth Patcher, Michael Snure, Nicholas Glavin
Heterostructures between 2D and 3D electron systems remain critically important in developing novel and efficient optoelectronic and electronic devices. In this study, a vertical heterojunction between monolayer MoS2 and bulk InSe was developed. This

Analytical Ultracentrifugation Characterization of Differential Sedimentation Size-Separated Graphene Dispersions

April 11, 2025
Author(s)
Christopher Sims, Elisabeth Mansfield, Jason Killgore, Jeffrey Fagan, Mark Hersam, Ana Moraes, Julia Downing
Analytical ultracentrifugation (AUC) is applied to the characterization of as-dispersed graphene nanoplatelet dispersions and differential sedimentation separated daughter dispersions. The liquid-phase characterization of AUC is demonstrated to resolve

Recommended Nomenclature Convention for the NISTCHO Cell Line and Its Product Monoclonal Antibody, cNISTmAb.

April 11, 2025
Author(s)
Megan Cleveland, Ioannis Karageorgos, John Marino, Michael Tarlov, Katharina Yandrofski, Rebecca Zangmeister, Zvi Kelman
A Chinese hamster ovary (CHO) cell line expressing the same amino acid sequences of the heavy and light chains of the NIST monoclonal antibody, NISTmAb Reference Material 8671, was generated by MilliporeSigma to be developed by NIST as a reference material

Requirements for Cryptographic Accordions

April 11, 2025
Author(s)
Yu Long Chen, Michael Davidson, Morris Dworkin, John Kelsey, Yu Sasaki, Meltem Sonmez Turan, Alyssa Thompson, Nicky Mouha, Donghoon Chang
This report introduces the cryptographic accordion as a tweakable, variable-input-length strong pseudorandom permutation (VIL-SPRP) that is constructed from an underlying block cipher. An accordion facilitates the cryptographic processing of messages of

Tuning the Surface Electronic Landscape of Ultrathin (Al,Sn)Ox Electron Extraction Layers in Perovskite Solar Cells

April 10, 2025
Author(s)
Joshua Sraku Adu, Alice Sheppard, Raphael Agbenyeke, George Kwesi "Asare ", Behrang Hamadani, David Fermin, Helen Hejin Park
Power conversion losses at the electron transport layer (ETL) are key limiting factors in high-performance perovskite solar cells (PSC) and silicon-PSC tandem systems. Solution-processed nanoparticle tin dioxide (np-SnO2) films typically serve as ETLs in n
Displaying 426 - 450 of 73802
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