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Search Publications

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Displaying 1 - 25 of 56033

Improving Particle Collection Efficiency of Sampling Wipes used for Trace Chemical Detection

December 14, 2023
Author(s)
J Greg Gillen, Jeffrey Lawrence, Edward Sisco, Matthew E. Staymates, Liz Robinson, Jennifer R. Verkouteren, Alexander Bulk
Improvement of the particle collection efficiency of sampling wipes is desirable for optimizing the performance of many wipe-based chemical analysis techniques used for trace chemical screening applications. In this note, commercially available Teflon

Rydberg Atoms for One-Step Traceability for Sensing Electric Fields

May 8, 2023
Author(s)
Aly Artusio-Glimpse, Christopher L. Holloway, Matt Simons, Nik Prajapati, Drew Rotunno, Samuel Berweger, Kaleb Campbell, Maitreyi Jayaseelan
Absolute electric field measurements present a "chicken-and-egg" situation where calibration of field probes relies on accurate knowledge of the field while precise determination of the field involves measurements with a calibrated probe. Metrology

A high-strength precipitation hardened cobalt-free high-entropy alloy

April 12, 2023
Author(s)
Matthew Luebbe, Jiaqi Duan, Fan Zhang, Jonathan Poplawsky, Hans Pommeranke, Maalavan Arivu, Andrew Hoffman, Haiming Wen
Recent studies on precipitation-hardened high-entropy alloys (HEAs) demonstrate their high strength and thermal stability, making them promising materials for high-temperature structural applications such as nuclear reactors. However, many existing HEAs

Comparison of saturator designs for low volatility liquid precursor delivery

April 1, 2023
Author(s)
James E. Maslar, William A. Kimes, Vladimir B. Khromchenko, Brent Sperling, Ravindra Kanjolia
Low volatility precursors are widely utilized in chemical vapor deposition and atomic layer deposition processes. Such precursors are often delivered from one of two common saturator designs: a bubbler or a flow over vessel. Previous reports concerning

Effect of Alkali-Silica Reaction on the Flexural Behavior of Beams with Tensile Lap Splices

March 31, 2023
Author(s)
Long Phan, Jonathan Weigand, Fahim H. Sadek, Adam L. Pintar, Sorin Marcu, Travis Thonstad, Timothy Barrett
A series of 19 beam specimens, with varying stirrup spacing and tensile lap splice lengths, were tested at the National Institute of Standards and Technology (NIST) under four-point loading to investigate the impact of alkali silica reaction (ASR) on the

Static Analysis Tool Exposition (SATE) VI: Mobile Track Report

March 21, 2023
Author(s)
Michael Ogata
Mobile applications are pervasive in the public and private sectors. Enterprises in these sectors should evaluate the mobile applications used within their infrastructures for vulnerabilities to minimize potential risk. The SATE VI Mobile track seeks to

Real-Time Flashover Prediction Model for Multi-Compartment Building Structures Using Attention Based Recurrent Neural Networks

March 17, 2023
Author(s)
Wai Cheong Tam, Eugene Yujun Fu, Jiajia Li, Richard D. Peacock, Paul A. Reneke, Thomas Cleary, Grace Ngai, Hong Va Leong, Michael Xuelin Huang
This paper presents the development of an attention based bi-directional gated recurrent unit model, P-Flashv2, for the prediction of potential occurrence of flashover in a traditional 111 m2 single story ranch-style family home. Synthetic temperature data

Synergistic Fire Resistance of Nanobrick-wall Coated 3D Printed Photopolymer Lattices

March 16, 2023
Author(s)
Thomas Kolibaba, Callie Higgins, Zack Buck, Dash Weeks, Jason Killgore
Photopolymer additive manufacturing has become the subject of widespread interest in recent years due to its capacity to enable fabrication of difficult geometries that are impossible to build with traditional modes of manufacturing. The flammability of

Users Are Not Stupid: Six Cyber Security Pitfalls Overturned

March 16, 2023
Author(s)
Julie Haney
The skilled and dedicated professionals who strive to improve cyber security may unwittingly fall victim to misconceptions and pitfalls that hold customers and users back from reaching their full potential of being active partners in security. These

Polyethyleneimine/polyethylene glycol-conjugated gold nanoparticles as nanoscale positive/negative controls in nanotoxicology: Testing in frog embryo teratogenesis assay-Xenopus and mammalian tissue culture system

March 15, 2023
Author(s)
Vytas Reipa, Alessandro Tona, Feng Yi, Bryant C. Nelson, David A. LaVan, Vincent A. Hackley, Tae Joon Cho
Despite the great potential of using positively charged gold nanoparticles (AuNPs) in nanomedicine, no systematic studies have been reported on their synthesis optimization or colloidal stability under physiological conditions until a group at the National

Three-dimensional, label-free cell viability measurements in tissue engineering scaffolds using optical coherence tomography

March 14, 2023
Author(s)
Greta Babakhanova, Anant Agrawal, Deepika Arora, Allison Horenberg, Jagat Budhathoki, Joy Dunkers, Joe Chalfoun, Peter Bajcsy, Carl Simon Jr.
In the field of tissue engineering, 3D scaffolds and cells are often combined to yield constructs that are used as therapeutics to repair or restore tissue function in patients. Viable cells are required to achieve the intended mechanism of action for the

Considering Interoperability for Electric Vehicle Charging: A Commission Case Study

March 13, 2023
Author(s)
Cuong Nguyen, Avi Gopstein, Danielle Sass Byrnett, Kerry Worthington, Christopher Villarreal
As adoption of electric vehicles (EVs) increases across the United States and charging equipment to power vehicles is installed, the electricity system, states, utilities, EV manufacturers, EV supply equipment (EVSE) manufacturers, and stakeholders are

Salts as additives: A route to improve performance and stability of n-type organic electrochemical transistors

March 9, 2023
Author(s)
David Ohayon, Lucas Flagg, Andrea Giugni, Shofarul Wustoni, Ruipeng Li, Tania Hidalgo, Abdul Hamid Emwas, Rajendar Sheelamanthula, Iain McCulloch, Lee J. Richter, Sahika Inal
Organic electrochemical transistors (OECTs) are becoming increasingly ubiquitous in a wide variety of applications at the interface with biological systems, including biosensing, neuromorphic computing, and logic circuits. The widespread use of these

Effect of Aging on Unidirectional Composite Laminate Polyethylene for Body Armor

March 8, 2023
Author(s)
Amy Engelbrecht-Wiggans, Ajay Krishnamurthy, Amanda L. Forster
Ballistic-resistant body armor has increasingly been using flexible unidirectional (UD) composite laminates that comprise multiple layers in the armor construction. Each UD layer contains high-performance fibers held in place using very low modulus binder

Workshop on Incorporating Climate Change Data in U.S. Building Codes and Standards

March 8, 2023
Author(s)
Jason D. Averill, Therese P. McAllister, Andrew K. Persily, Scott Weaver, James Whetstone, Jiann C. Yang, Michael Kuperberg, Sumant Nigam, Alfredo Ruiz-Barradas
NIST hosted a workshop to advance the availability of climate information sought by organizations developing standards, model building codes, and voluntary certifications by convening interactions between the building codes and climate science communities.

Calibration Stability of Data Loggers Used for Vaccine Temperature Monitoring

March 6, 2023
Author(s)
Michal J. Chojnacky, Sam Smith, Bethany Rodman, Tobias Herman
Continuous temperature monitoring of vaccines during distribution and storage is critical to ensuring vaccination efficacy. Exposure to inappropriate storage temperatures can degrade vaccine potency, putting products and patients at risk if excursions go

Deciphering small business community disaster support using machine learning

March 3, 2023
Author(s)
Eleanor Pierel, Jennifer Helgeson, Kirstin Dow
With the increase in severity and frequency of natural hazards due to climate change, developing a holistic understanding of community resilience factors is critically important to disaster response and community support. Our investigation of small
Displaying 1 - 25 of 56033