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Search Publications

NIST Authors in Bold

Displaying 926 - 950 of 74220

Visualizing the melting of the charge density wave in UTe2 by generation of pairs of topological defects with opposite winding

June 15, 2023
Author(s)
Anuva Aishwarya, Julian May-Mann, Avior Almoalem, Sheng Ran, Shanta Saha, Johnpierre Paglione, Nicholas Butch, Eduardo Fradkin, Vidya Madhavan
Topological defects are singularities in an ordered phase that can have a profound effect on phase transitions and serve as a window into the order parameter. In this work we use scanning tunneling microscopy to visualize the role of topological defects in

Influence of Hard/Soft Layer Ordering on Magnetization Reversal of Bimagnetic Nanoparticles: Implications for Biomedical/Theranostic Applications

June 14, 2023
Author(s)
Corisa Kons, Kathryn L. Krycka, Joshua Robles, Nikolaos Ntallis, Manuel Pereiro, Manh-Huong Phan, Hariharan Srikanth, Julie A. Borchers, Dario A. Arena
We investigate the spatial distribution of spin orientation in magnetic nanoparticles consisting of hard and soft magnetic layers. The nanoparticles are synthesized in a core / shell spherical morphology where the magnetically hard, high anisotropy layer

Qubit-oscillator concatenated codes: decoding formalism & code comparison

June 14, 2023
Author(s)
Yijia Xu, Yixu Wang, En-Jui Kuo, Victor Albert
Concatenating bosonic error-correcting codes with qubit codes can substantially boost the error-correcting power of the original qubit codes. It is not clear how to concatenate optimally, given there are several bosonic codes and concatenation schemes to

Recommended Practices for Calibrated Millimeter-Wave Modulated-Signal Measurements

June 14, 2023
Author(s)
Paritosh Manurkar, Joshua Kast, Dylan Williams, Rob Horansky, Dan Kuester, Kate Remley
In a millimeter-wave modulated-signal measurement system with several calibration reference planes, we want the measured signal to be a close replica of the ideal signal at the reference plane which connects the near-ideal measured signal to subsequent

SATE VI Report: Bug Injection and Collection

June 14, 2023
Author(s)
Aurelien Delaitre, Paul E. Black, Damien Cupif, Guillaume Haben, Loembe Alex-Kevin, Vadim Okun, Yann Prono, Aurelien Delaitre
The SATE VI report presents the results of a security-focused bug finding evaluation exercise carried out from 2018 to 2023 on various code bases using static analysis tools. Existing bugs were extracted from bug tracker reports and the CVE/NVD database

Systematic Improvements in Transmon Qubit Coherence enabled by Niobium Surface Encapsulation

June 14, 2023
Author(s)
Mustafa BAL, Akshay Murthy, Francesco Crisa, Shaojiang Zhu, Florent Lecocq, Joe Aumentado, Joel Ullom, Pete Hopkins
We present a novel transmon qubit fabrication technique that yields systematic improvements in T1 coherence times. In this study, the devices are fabricated using a novel encapsulation strategy that involves passivating the surface of niobium and thereby

A chip-scale atomic beam clock

June 13, 2023
Author(s)
Gabriela Martinez, Chao Li, Alexander Staron, John Kitching, Chandra Raman, William McGehee
We demonstrate a passively pumped, chip-scale atomic beam clock fabricated using a stack of silicon and glass wafers. The device could additionally serve as a platform for compact atom interferometers and other future quantum sensors.

A Generic STS Viewer on the Web

June 13, 2023
Author(s)
Wendell Piez
In an alternate universe, XML (1998) and XSLT 1.0 (1999) were not developed so early, and did not have to wait for the rest of the web to catch up. In ours, it took two decades before other critically important pieces of the puzzle – CSS, DOM, ECMAScript

Electrosteric control of the aggregation and yielding behavior of concentrated portlandite suspensions

June 13, 2023
Author(s)
Sharu Kandy, Mathieu Bauchy, Gaurav Sant, Aditya Kumar, Narayanan Neithalath, Samanvaya Srivastava, Torben Gaedt, Edward Garboczi
Portlandite (calcium hydroxide: CH: Ca(OH)2) suspensions aggregate spontaneously and form percolated fractal aggregate networks when dispersed in water. As a result, the yield stress and viscosity of portlandite suspensions diverge at low particle loadings

Feedback cooled Bose-Einstein condensation: near and far from equilibrium

June 13, 2023
Author(s)
Ian Spielman, Hilary Hurst, Evan Yamaguchi
Continuously measured interacting quantum systems almost invariably heat, causing loss of quantum coherence. Here we study Bose-Einstein condensates (BECs) subject to repeated weak measurement of the atomic density and describe several protocols for

Multi-k Magnetic Structure and Large Anomalous Hall Effect in Candidate Magnetic Weyl Semimetal NdAlGe

June 13, 2023
Author(s)
C. Dhital, Rebecca Dally, R. Ruvalcaba, R. Gonzalez-Hernandez, J. Guerrero-Sanchez, Huibo Cao, Q. Zhang, W. Tian, Y. Wu, M. Frontzek, S. K. Karna, A. Meads, B. Wilson, R. Chapai, D. Graf, J. Bacsa, R. Jin, J. DiTusa
The magnetic structure, magnetoresistance, and Hall effect of non-centrosymmetric magnetic semimetal NdAlGe are investigated revealing an unusual magnetic state and anomalous transport properties that are associated with the electronic structure of this

Industrial Wireless Cyberphysical Systems Performance Using Deep Learning

June 12, 2023
Author(s)
Mohamed Hany, Rick Candell, Karl Montgomery
Industrial wireless communications networks have a major role in the future industrial cyber-physical systems (CPSs) to have higher flexibility and massive machine connectivity. However, the impact of the industrial wireless on the reliability and latency

Security Analysis of Trust on the Controller in the Matter Protocol

June 11, 2023
Author(s)
Anoop Singhal, Shaswat Kumar, Francis Ha, Ximming Ou
Matter is an open-source connectivity standard for the purpose of allowing smart home IoT devices from different vendors to interoperate with one another. A controller in a Matter system commissions new devices into the Matter fabric. The device needs to

Measurement and Gate-Voltage Dependence of Channel and Series Resistances in Lateral Depletion-Mode b-Ga2O3 MOSFETs

June 9, 2023
Author(s)
Ory Maimon, Neil Moser, Kyle Liddy, Andrew Green, Kelson Chabak, Kin (Charles) Cheung, Sujitra Pookpanratana, Qiliang Li
Lateral depletion-mode, beta-phase gallium oxide (β-Ga2O3) metal-oxide-semiconductor field-effect transistors (MOSFETs) with source-drain spacings of 3 µm, 8 µm, and 13 µm are studied using a modified Transfer Length Method (TLM) to obtain sheet

Cybersecurity Framework Profile for Liquefied Natural Gas

June 8, 2023
Author(s)
Bill Newhouse, Josephine Long, David Weitzel, Jason Warren, Michael Thompson, Chris Yates, Hillary Tran, Alicia Mink, Aurora Herriott, Tom Cottle
This document is the Cybersecurity Framework Profile developed for the Liquefied Natural Gas (LNG) industry and the subsidiary functions that support the overarching liquefaction process, transport, and distribution of LNG. The LNG Cybersecurity Framework
Displaying 926 - 950 of 74220