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Displaying 1 - 25 of 143665

Description of the electronic structure of oxyhemoglobin using Fe L-edge X-ray absorption spectroscopy

June 11, 2025
Author(s)
Augustin Braun, Charles Titus, Michael Baker, Max Waters, James Yan, Sang-Jun Lee, Dennis Nordlund, William Doriese, Galen O'Neil, Daniel Schmidt, Daniel Swetz, Joel Ullom, Kent Irwin, Edward Solomon
The electronic structure of oxyhemoglobin (oxyHb), the O2-bound form of the oxygen carrier, has been controversial since the discovery of its diamagnetism in 1936. This study uses partial fluorescence yield Fe L-edge X-ray absorption spectroscopy (XAS) in

Radial polarization imaging of entangled biphoton state

June 11, 2025
Author(s)
Jiung Kim, Jeeseong Hwang, Martin Sohn
Polarization entanglement of single photons is a key element to enable quantum 2.0 applications such as quantum computing, quantum networks, and quantum sensing. Verification and fidelity assessment of quantum entanglement of single photon pairs correlated

Implementing a Zero Trust Architecture: High-Level Document

June 10, 2025
Author(s)
Alper Kerman, Oliver Borchert, Gema Howell, Scott Rose, Murugiah Souppaya, Jason Ajmo, Yemi Fashina, Parisa Grayeli, Joseph Hunt, Jason Hurlburt, Nedu Irrechukwu, Joshua Klosterman, Oksana Slivina, Susan Symington, Allen Tan, Karen Scarfone, William Barker, Peter Gallagher, Aaron Palermo, Madhu Balaji, Adam Cerini, Rajarshi Das, Jacob Barosin, Kyle Black, Scott Gordon, Jerry Haskins, Keith Luck, Dale McKay, Sunjeet Randhawa, Brian Butler, Mike Delaguardia, Matthew Hyatt, Randy Martin, Peter Romness, Corey Bonnell, Dean Coclin, Ryan Johnson, Dung Lam, Darwin Tolbert, Tim Jones, Tom May, Christopher Altman, Alex Bauer, Marco Genovese, Andrew Campagna, John Dombroski, Adam Frank, Nalini Kannan, Priti Patil, Harmeet Singh, Mike Spisak, Krishna Yellepeddy, Nicholas Herrmann, Corey Lund, Farhan Saifudin, Madhu Dodda, Tim LeMaster, Ken Durbin, James Elliott, Earl Matthews, David Pricer, Joey Cruz, Tarek Dawoud, Carmichael Patton, Alex Pavlovsky, Brandon Stephenson, Clay Taylor, Bob Lyons, Vinu Panicker, Peter Bjork, Hans Drolshagen, Imran Bashir, Ali Haider, Nishit Kothari, Sean Morgan, Seetal Patel, Norman Wong, Zack Austin, Shawn Higgins, Rob Woodworth, Mitchell Lewars, Bryan Rosensteel, Don Coltrain, Wade Ellery, Deborah McGinn, Frank Briguglio, Ryan Tighe, Chris Jensen, Joshua Moll, Jason White, Joe Brown, Gary Bradt, Jeffrey Adorno, Syed Ali, Bob Smith
A zero trust architecture (ZTA) enables secure authorized access to enterprise resources that are distributed across on-premises and multiple cloud environments, while enabling a hybrid workforce and partners to access resources from anywhere, at any time

Partition Functions and Ideal-Gas Thermodynamics for Carbon Dioxide

June 10, 2025
Author(s)
Sergey Tashkun, Allan Harvey
We have constructed an effective Hamiltonian model for the rotational-vibrational states of molecular carbon dioxide. The model is constrained by a large amount of spectroscopic data for frequencies of rovibrational transitions. From this formulation, we

Residual stress-assisted static globularization in electron beam powder bed fusion Ti-6Al-4V from powder recovery and hot isostatic pressing

June 10, 2025
Author(s)
Nicholas Derimow, Thomas Berfield, Keenan Hanson, Jake Benzing, Nikolas Hrabe
The residual stresses from controlled powder recovery blasting on electron beam powder bed fusion (PBF-EB) Ti-6Al-4V were investigated via hole drilling, profilometry, and microscopy. After hot isostatic pressing, the near-surface lamellar the near-surface

Spin-lattice entanglement in CoPS3

June 10, 2025
Author(s)
Angela Hight Walker, Kevin Garrity, Rebecca Dally
Complex chalcogenides in the MPS3 family of materials (M = Mn, Fe, Co, and Ni) display remarkably different phase progressions depending upon the metal center orbital filling, character of the P–P linkage, and size of the van der Waals gap. There is also a

Uranium Particle Age Dating, Aggregation, and Model Age Best Estimators

June 9, 2025
Author(s)
Evan Groopman, Todd Williamson, Timothy Pope, Michael Bronikowski, Spencer M. Scott, Matthew Wellons
We present important aspects of uranium particle age dating by Large-Geometry Secondary Ion Mass Spectrometry (LG-SIMS) that can introduce bias and increase model age uncertainties, especially for small, young, and/or low-enriched particles. This metrology

Dual-Field Multicollector LG-SIMS Analysis of Mixed U-Pu Reference Particles

June 6, 2025
Author(s)
Evan Groopman, Todd Williamson, Kyle Samperton, Spencer M. Scott, Bryan Foley, Michael Bronikowski, George King, Matthew Wellons
In this study, we demonstrate a new dual-field multicollector protocol for magnetic sector large-geometry secondary ion mass spectrometry that enables concurrent analysis of U and Pu isotopes. We apply this analysis protocol to recently produced mixed U-Pu

Out-of-plane electrochemical transport in all-thin-film hetero-epitaxial solid oxide fuel cell structures

June 6, 2025
Author(s)
Huairuo Zhang, Albert Davydov, Yangang Liang, Xiaohang Zhang, Yaoyu Ren, Seunghun Lee, H.M. Jaim, Eric Marksz, Takeuchi Ichiro, Haiyan Tan, Leonid Bendersky, Chris Kucharczyk, Ruiyun Huang, Sossina Haile
We have fabricated all-thin-film solid oxide fuel cell (SOFC) heterostructures and investigated the transport properties of Sm0.2Ce0.8O2-δ (SDC20) in an out-of-plane measurement geometry. The SOFC heterostructures, consisting of a bottom SrRuO3 (SRO) or

Implications of the Bullet Black Box Study

June 5, 2025
Author(s)
Bullet Black Box Working Group
The Bullet Black Box Working Group (BulletBB-WG) was convened to review the results of the NIST-Noblis Bullet Black Box Study, and assess the implications of that study on casework. This report includes the recommendations of the BulletBB-WG on how to

Metrics and Methodology for Hardware Security Constructs

June 5, 2025
Author(s)
Sanjay Rekhi, Kostas Amberiadis
Although hardware is commonly believed to be security-resilient, it is often susceptible to vulnerabilities arising from design and implementation flaws. These flaws have the potential to jeopardize not only the hardware's security, but also its operations

Picosecond Josephson samplers: Modeling and measurements

June 4, 2025
Author(s)
Logan Howe, Bart van Zeghbroeck, David Olaya, John Biesecker, Charles Burroughs, Peter Hopkins, Samuel Benz
Measurement of signals generated by superconducting Josephson junction (JJ) circuits require ultra-fast components located in close proximity to the generating circuitry. We report a detailed study of optimal design criteria for a JJ-based sampler that

Artificial Intelligence in the Fire Service: Considerations for Implementing Artificial Intelligence into Electronic Safety Equipment

June 3, 2025
Author(s)
Christopher Sampl, Clinton Smith, Albert Bahri, David Little, Richard Reel, Ash Liu, Jonathan Hodges, Ryan Falkenstein-Smith
Artificial Intelligence (AI) is becoming more pervasive in society, including public safety. There is a growing need for safety guidelines as AI becomes more integrated within electronic safety products used within the fire service. A group comprised of

Deciphering decomposition pathways of high explosives with cryogenic X-ray Raman spectroscopy

June 3, 2025
Author(s)
Oscar Parades Mellone, Michael Nielsen, Jeffrey Babicz, John Vinson, Trevor Willey, Dimosthenis Sokaras
We employed cryogenic X-ray Raman spectroscopy to investigate the early-stage decomposition of the high explosive molecule hexanitrohexaazaisowurtzitane (CL-20). By systematically varying the radiation dose under cryogenic conditions, we induced the

Sensitivity Study of Operating Conditions and Liquid Water Transport Behavior in an AEMFC Aided by Modeling and Neutron Radiography

June 1, 2025
Author(s)
Mrittunjoy Sarker, Felipe Mojica, Ami Neyerlin, Bryan Pivovar, Daniel Hussey, Jacob LaManna, David Jacobson, Po-Ya Chuang
Two types of anion exchange ionomers, powder and dispersion, are studied in this work. The gas diffusion electrode (GDE) with the dispersion-type ionomer exhibits strong hydrophobicity, thus not enabling sufficient ionic exchange during the potassium

Elucidating the thermal properties and anomalous transport in the 18R polytype of SnSe2

May 30, 2025
Author(s)
Oluwagbemiga Ojo, Wilarachchige D. C. B. Gunatilleke, Winnie Wong-Ng, Tieyan Chang, Yu-Sheng Chen, Joshua Martin, Adam Biacchi, George Nolas
The 18R polytype of SnSe2 possesses unique structural features that can directly impact the transport properties and potential applications of interest; however, a comprehensive understanding of the intrinsic physical properties is lacking. We grew large

280-GHz aluminum MKID arrays for the Fred Young Submillimeter Telescope

May 29, 2025
Author(s)
Anna Vaskuri, Jordan Wheeler, Jason Austermann, Michael Vissers, James Beall, James R. Burgoyne, Victoria Butler, Scott Chapman, Steve K. Choi, Abigail Crites, Cody J. Duell, Rodrigo Freundt, Anthony Huber, Zachary Huber, Johannes Hubmayr, Jozsef Imrek, Ben Keller, Lawrence Lin, Alicia Middleton, Michael D. Niemack, Thomas Nikola, Douglas Scott, Adrian Sinclair, Ema Smith, Gordon Stacey, Joel Ullom, Jeffrey Van Lanen, Eve Vavagiakis, Samantha Walker, Bugao Zou
First light observations of the 280 GHz instrument module of the Fred Young Submillimeter Telescope (FYST) in the CCAT Collaboration are expected in 2026. The focal plane of this module will consist of three superconducting microwave kinetic inductance

Fault-Tolerant Compiling of Classically Hard Instantaneous Quantum Polynomial Circuits on Hypercubes

May 28, 2025
Author(s)
Dominik Hangleiter, Marcin Kalinowkski, Dolev Bluvstein, Madelyn Cain, Nishad Maskara, Xun Gao, Aleksander Kubica, Mikhail Lukin, Michael Gullans
Quantum computational advantage is challenging to maintain asymptotically in the presence of noise. Fault-tolerant quantum computing provides a route to noiseless computations, but can have high overheads for generic algorithms. Here, we develop a fault
Displaying 1 - 25 of 143665
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