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Search Publications

NIST Authors in Bold

Displaying 5701 - 5725 of 74364

Dual Josephson impedance bridge: towards a universal bridge for impedance metrology

October 22, 2020
Author(s)
Frederic Overney, Nathan Flowers-Jacobs, Blaise Jeanneret, Alain Rufenacht, Anna Fox, Paul Dresselhaus, Samuel Benz
This paper presents a full characterization of a Dual Josephson Impedance Bridge (DJIB) at frequencies up to 80 kHz by using the DJIB to compare the best available impedance standards that are (a) directly traceable to the quantum Hall effect, (b) used as

FPGA-based Low-Latency Digital Servo for Optical Physics Experiments

October 22, 2020
Author(s)
Marco Pomponio, Archita Hati, Craig Nelson
We propose a general-purpose dual-channel field-programmable gate array (FPGA) based digital servo with a minimum latency around 200 ns. This servo implements a proportional, dual- integration and derivative (PIID) controller along with internal numerical

PSCR 2020_ Prototyping 3D User Interfaces for First Responders

October 22, 2020
Author(s)
Katelynn A. Kapalo
Due to rapid advances in technology, first responders will eventually have access to building information, sensor data, and fire protection system data in real time. However, the presentation of this critical information has not been fully evaluated from

The New NIST Phish Scale, Revealing Why End Users Click

October 22, 2020
Author(s)
Shanee T. Dawkins, Kristen Greene, Jody L. Jacobs
Developed based on over 4 years of NIST phishing training data, the NIST Phish Scale is a DIY method for rating human phishing detection difficulty – key to understanding variability in phishing click rates. This talk will cover why users click, why it’s

Interfacial spin-orbit torques

October 21, 2020
Author(s)
Vivek P. Amin, Paul M. Haney, Mark D. Stiles
Spin-orbit torques offer a promising mechanism to electrically control magnetization dynamics in nanoscale heterostructures. While spin-orbit torques occur predominately at interfaces, the physical mechanisms underlying these torques can originate in both

International Workshop on Deep Video Understanding

October 21, 2020
Author(s)
Keith Curtis, George Awad, Shahzad K. Rajput, Ian Soboroff
This is the introduction paper to the International Workshop on Deep Video Understanding. In recent years, a growing trend towards working on understanding videos (in particular movies) in a more deeper level started to motivate researchers working in

SurA is a Cryptically Grooved Chaperone that Expands Unfolded Outer Membrane Proteins

October 21, 2020
Author(s)
Dagan C. Marx, Ashlee M. Plummer, Anneliese M. Faustino, Taylor Devlin, Michaela A. Roskopf, Mathis J. Leblanc, Henry J. Lessen, Barbara T. Amann, Patrick J. Fleming, Susan T. Krueger, Stephen D. Fried, Karen G. Fleming
The periplasmic chaperone network ensures the biogenesis of bacterial outer membrane proteins (OMPs) and has recently been identified as a promising target for antibiotics. SurA is the most important member of this network, both due to its genetic

Tuning the Crystalline Electric Field and Magnetic Anisotropy along the CeCuBi 2-x Sb x Series

October 20, 2020
Author(s)
G. S. Freitas, M. M. Piva, R. Grossi, C. B. Jesus, J. C. Souza, D. S. Christovam, Jr. Oliveira, Juscelino Leao, C. Adriano, Jeffrey W. Lynn, P. G. Pagliuso
We have performed X-ray powder diffraction, magnetization, electrical resistivity, heat capacity and inelastic neutron scattering (INS) to investigate the physical properties of the intermetallic series of compounds CeCuBi 2−xSb x. These compounds

Effect of H 2 O Molecules on Thermal Expansion of TiCo(CN) 6

October 19, 2020
Author(s)
Qilong Gao, Xinwei Shi, Alessandro Venier, Qingzhen Huang, Hui Wu, Jun Chen, Andrea Sanson, Erjun Liang
The understanding of the role of guest molecules in the lattice void of open-framework structures is vital for thermal expansion tailoring. Here, we take a new NTE compound, TiCo(CN) 6 as a case study from the local structure perspective to investigate the

Note: A Radio Frequency Voltage-Controlled Current Source for Quantum Spin Manipulation

October 19, 2020
Author(s)
Daniel S. Barker, Alessandro Restelli, James A. Fedchak, Julia K. Scherschligt, Stephen P. Eckel
We present a design for a wide-bandwidth, voltage-controlled current source that is easily integrated with radiofrequency magnetic field coils. Our design uses current feedback to compensate for the frequency-dependent impedance of a radiofrequency antenna

Unphysical critical curves of binary mixtures predicted with GERG models

October 19, 2020
Author(s)
Ian H. Bell, Ulrich K. Deiters
When applied to asymmetric binary mixtures (e.g., methane + pentane or heavier alkanes, hydrogen-containing mixtures), the GERG equation of state (GERG-2004 or GERG-2008) predicts critical curves with physically unreasonable temperature maxima above the

Development of Computational Framework for Titanium Alloy Phase Transformation Prediction in Laser Powder-bed Direct Energy Additive Manufacturing

October 16, 2020
Author(s)
Zhi Liang, Ivan Zhirnov, Fan Zhang, Kevontrez K. Jones, David C. Deisenroth, Maureen E. Williams, Ursula R. Kattner, Kil-Won Moon, Wing-Kam Liu, Brandon M. Lane, Carelyn E. Campbell
In conjunction with bare metal single laser track validation experiments, a computational framework is proposed to accelerate the design and development of new additive manufacturing (AM) specific alloys. Specifically, Additive Manufacturing-Computational

Enhance Dynamics in the Anomalous Melting Regime of DMPG Lipid Membranes

October 16, 2020
Author(s)
Elizabeth Kelley, Michihiro Nagao, Paul Butler, Lionel Porcar, Bela Farago
Like many soft materials, lipids undergo a melting transition associated with a significant increase in their dynamics. At temperatures below the main melting transition (T m), all molecular and collective dynamics are suppressed, while above T m the alkyl

Human-Supervised Semi-Autonomous Mobile Manipulators for Safely and Efficiently Executing Machine Tending Tasks

October 16, 2020
Author(s)
Sarah Al-Hussaini, Shantanu Thakar, Hyojeong Kim, Pradeep Rajendran, Brual C. Shah, Alec Kanyuck, Jeremy Marvel, Satyandra K. Gupta
Mobile manipulators can be used for machine tending and material handling tasks in small volume manufacturing applications. These applications usually have semi-structured work environment. The use of a fully autonomous mobile manipulator for such

Semiconducting to Metallic Electronic Landscapes in Defects Controlled Two-Dimensional ?-d Conjugated Coordination Polymer Thin Films

October 16, 2020
Author(s)
Cherno Jaye, Daniel A. Fischer, Jonathan Ogle, Nabajit Lahiri, Christopher Tassone, Janis Louie, Luisa Whittaker-Brooks
Two-dimensional coordination polymers (2D CPs) are of significant interest due to their intriguing structural, optical, and electrical properties which can be tuned through the selective coordination of different metals and organic linkers. Although, 2D

TRACE ELEMENT CONCENTRATIONS IN BLOOD AND SCUTE TISSUES FROM WILD AND CAPTIVE HAWAIIAN GREEN SEA TURTLES (CHELONIA MYDAS)

October 16, 2020
Author(s)
Katherine Shaw, Jennifer Lynch, George H. Balazs, T. T. Jones, Jeff Pawloski, Marc Rice, Amanda French, Jing Liu, David Klein
Hawaiian green sea turtles (Chelonia mydas) are exposed to trace elements through water, sediment, and food. High concentrations of elements have been shown to decrease immune function, impair growth, and decrease reproduction in wildlife. This study

Certification of Standard Reference Material(R) 955d, Toxic Elements and Metabolites in Frozen Human Blood

October 15, 2020
Author(s)
Lee L. Yu, Karen E. Murphy, Colleen E. Bryan Sallee, Thomas W. Vetter, Robert C. Hagwood, George C. Caceres, Stephen E. Long, J M. Jarrett, M A. Franklin, J Castro Georgi, D M. Jones, Robert Jones, Z Li, Y L. Sommer, D S. Tevis, K Wallon, C D. Ward, M Maras, S Erdahl, C Gilmer, M Wermers, H Woldeysus, K F. Mehigan, M Morrissette, Christopher D. Palmer, Patrick J. Parsons
Standard Reference Material (SRM) 955d is intended for use in validating analytical methods for measuring toxic elements and mercury species in human blood, and in value assigning locally produced control materials analyzed using the validated methods. A

Cognitive Automation and its Impact on Additive Manufacturing

October 15, 2020
Author(s)
Albert T. Jones, Zhuo Yang, Yan Lu
The English word manufacturing firstly appeared in 1683 and it was derived from Latin manu factus, meaning making by hand. For more than thousands of years now, and four Industrial Revolutions, the physical, and mostly mechanical processes, associated with

Confinement of an alkaline-earth element in a grating magneto-optical trap

October 15, 2020
Author(s)
Ananya Sitaram, Peter Elgee, Gretchen K. Campbell, Daniel Barker, Nikolai Klimov, Stephen Eckel
We demonstrate a compact magneto-optical trap (MOT) of alkaline-earth atoms using a nanofabricated diffraction grating chip. A single input laser beam, resonant with the broad 1S0 to 1P1 transition of strontium, forms the MOT in combination with three
Displaying 5701 - 5725 of 74364