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Displaying 2426 - 2450 of 143775

Effect of austenite fraction and stability on strength-hardening-ductility in additively manufactured 17-4 PH stainless steel containing nitrogen

June 30, 2023
Author(s)
Saadi Habib, Steven P. Mates, Fan Zhang, Mark R. Stoudt, James Zuback, Olaf Borkiewicz
Additively-manufactured (AM) 17-4 precipitation-hardening (PH) martensitic stainless steel (SS) built from nitrogen-atomized powder often retains a large volume fraction of austenite. The retained austenite lowers the yield strength compared to both

Standards as Enablers for a Circular Economy

June 30, 2023
Author(s)
KC Morris, Vincenzo Ferrero, Buddhika Hapuwatte, Noah Last, Nehika Mathur
A successful transition to a circular economy (CE) will require global participation, but the path to that transition will follow many unique routes depending on local situations. The transition must have rigorous technical underpinnings and well-conceived

Universal visible emitters in nanoscale integrated photonics

June 30, 2023
Author(s)
Gregory Spektor, David Carlson, Zachary Newman, Jinhie Lee Skarda, Neil Sapra, Logan Su, Sindhu Jammi, Andrew Ferdinand, Amit Agrawal, Jelena Vuckovic, Scott Papp
Visible wavelength lasers control quantum matter of atoms and molecules, enable frontiers of physical sensing, and are foundational for various applications. The development of visible integrated photonics opens the possibility for scalable circuits with

Microwave Characterization of Parylene C Dielectric and Barrier Properties

June 29, 2023
Author(s)
Nikolas Dale Barrera, Jacob Pawlik, Eugene Yoon, James Booth, Christian Long, Nathan Orloff, Ellis Meng, Angela Stelson
Parylene C thin films are commonly used as a passivation layer, protective coating, or substrate material in implantable medical devices. However, fluid or vapor may permeate through Parylene C films over time through defects, film edges, or bulk diffusion

Operando photoelectron spectromicroscopy of nanodevices: Correlating the surface chemistry and transport in SnO2 nanowire chemiresistors

June 29, 2023
Author(s)
Andrei Kolmakov, Trey Diulus, Kurt D. Benkstein, Stephen Semancik, Majid Kazemian, Matteo Amati, Maya Kiskinova, Luca Gregoratti
With size reduction of active elements in microelectronics to tens of nanometers and below, the effect of surface and interface properties on overall device performance becomes crucial. High resolution spectroscopic and imaging techniques provide a

Scaling the Projectile Perforation Resistance of Soft Materials

June 29, 2023
Author(s)
Katherine Evans, Shawn Chen, Amanda Souna, Stephan J. Stranick, Christopher Soles, Edwin P. Chan
From space dust to ballistic impact, controlling or mitigating a high velocity projectile impact event is a desirable outcome. The design and development of new and novel impact mitigating materials are greatly hindered by the use of macroscale projectile

Detection of a Pair Density Wavestate in UTe2

June 28, 2023
Author(s)
Qiangqiang Gu, Joseph Carroll, Shuqiu Wang, Sheng Ran, Christopher Broyles, Hasan Siddiquee, Nicholas Butch, Shanta Saha, Johnpierre Paglione, J. Davis, Xiaolong Liu

Laser tracker interim testing per the ASME B89.4.19-2021 and ISO 10360-10:2021 standards

June 28, 2023
Author(s)
Marcos Motta de Souza, Bala Muralikrishnan, Vincent Lee, Daniel S. Sawyer
The recently revised ASME B89.4.19-2021 and ISO 10360-10:2021 standards for laser trackers include a new interim test that is comprehensive and more sensitive to systematic errors than the interim tests in the previous versions of the standards, i.e., the

O-RAN with Machine Learning in ns-3

June 28, 2023
Author(s)
Wesley Garey, Richard A. Rouil, Evan Black, Tanguy Ropitault, Weichao Gao
The Open Radio Access Network (O-RAN) Alliance is the industry led standardization effort, with the sole purpose of evolving the Radio Access Network (RAN) to be more open, intelligent, interoperable, and autonomous to support the ever growing need of

Towards Real-Time Heart Health Monitoring in Firefighting Using Convolutional Neural Networks

June 28, 2023
Author(s)
Jiajia Li, Christopher U. Brown, Dillon Dzikowicz, Mary Carey, Wai Cheong Tam, Michael Xuelin Huang
A machine learning-based heart health monitoring model, named H2M, was developed. 24-hour electrocardiogram (ECG) data from 112 professional firefighters was used to train the proposed model. The model used carefully designed multi-layer convolution neural

Use of non-targeted and suspect screening analysis to detect sources of human exposure to environmental contaminants

June 28, 2023
Author(s)
Katherine Manz, Anna Feerick, Joseph Braun, Yong-Lai Feng, Amber Hall, Jeremy Koelmel, Carlos A. Manzano, Seth Newton, Kurt Pennell, Benjamin Place, Krystal Godri Pollitt, Carsten Prasse, Joshua Young
Non-targeted analysis (NTA) and suspect screening analysis (SSA) are powerful techniques that rely on high-resolution mass spectrometry (HRMS) and computational tools to detect and identify unknown or suspected compounds in environmental media and human

A Simulation Framework for Analyzing the Impact of Stochastic Occupant Behaviors on Demand Flexibility in Typical Commercial Buildings

June 27, 2023
Author(s)
Zhelun Chen, Yicheng Li, Jin Wen, Liang Chung Lo, Gabriel Grajewski, Zheng O'Neill, Amanda Pertzborn, Vance (Wm.) Payne, Steven T. Bushby
As one of the primary users of the electric grid, buildings and building equipment, including heating, ventilation, and air conditioning (HVAC) systems, can be leveraged to provide the flexible demand needed to balance the grid. Typical strategies to

Detailed analysis of the synthesis and structure of MAX phase (Mo0.75V0.25)5AlC4 and its MXene (Mo0.75V0.25)5C4

June 27, 2023
Author(s)
Rose Snyder, Mikkel Juelsholt, Curran Kalha, Jason Holm, Elisabeth Mansfield, Tien-Lin Lee, Pardeep Thakur, Aysha Riaz, Benjamin Moss, Anna Regoutz, Christina Birkel
MAX phases with the general formula Mn+1AXn are layered carbides, nitrides and carbonitrides with varying stacking sequence of layers of M6X octahedra and the A-element depending on n. While "211" MAX phases (n = 1) are very common, MAX phases with higher
Displaying 2426 - 2450 of 143775
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