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NIST Authors in Bold

Displaying 6126 - 6150 of 74371

Bayesian Hierarchical Models for Service Life Prediction of Polymers

August 5, 2020
Author(s)
Adam L. Pintar, Christopher C. White, Li Piin Sung
Service life prediction for polymers remains an elusive goal. In this chapter, a general methodology first described in a previous study \cite{pintar2018predicting} is recapitulated and extended. A central component of the methodology is a Bayesian

Towards fast screening of organic solar cell blends

August 5, 2020
Author(s)
Lee J. Richter, Artem Levistsky, Giovanni M. Matrone, Aditi Khirbat, Ilaria Bargigia, Xiaolei Chu, Oded Nahor, Tamar Segal-Perez, Adam Moule, Carlos Silva, Natalie Stingelin, Gitti L. Frey
The ever increasing library of materials systems developed for organic solar-cells, including highly promising non-fullerene acceptors and new, high-efficiency donor polymers, demands the development of methodologies that (i) allow fast screening of a

Development of a Kinematic Measurement Method for Knee Exoskeleton Fit to a User

August 4, 2020
Author(s)
Roger V. Bostelman, YaShian Li-Baboud, Karl Van Wyk, Mili Shah
Exoskeletons are now being marketed by several manufacturers and yet there are currently no defined methods to measure the exoskeleton fit to the user. Proper exoskeleton fit to user impacts the safety of the human robot interaction. In this paper, we

Over-the-Air Testing of Cellular Large-Form-Factor Internet-of-Things Devices in Reverberation Chambers

August 4, 2020
Author(s)
Catherine A. Remley, Clive Bax, Edwin Mendivil, Michael Foegelle, John Kvarnstrand, Derek Skousen, David S?nchez-Hern?ndez, Miguel Garcia-Fernandez, Lorien Chang, Elvis Yen, Johnny Gutierrez, Justin Harbour
We demonstrate the applicability of the reverberation chamber for over-the-air testing of power- based metrics for cellular-enabled wireless internet-of-things devices. A recent industry- sponsored round robin illustrates agreement between labs to within

A Document-based View of the Risk Management Framework

August 3, 2020
Author(s)
Joshua Lubell
Cybersecurity professionals know the Risk Management Framework as a rigorous yet flexible process for managing security risk. But the RMF lacks a document focus, even though much of the process requires authoring, reviewing, revising, and accessing plans

Aggregating Atomic Clocks for Time-Stamping

August 3, 2020
Author(s)
Temur Saidkhodjaev, Jeff Voas, D. Richard Kuhn, Joanna DeFranco, Phil Laplante
A timestamp is a critical component in many applications, such as proof of transaction ordering or analyzing algorithm performance. This paper reports on a method called Verified Timestamping (VT) that improves the standard timestamp protocol. VT was

Antichiral Spin Order, its Soft Modes, and their Hybridization with Phonons in the Topological Semimetal Mn 3 Ge

August 3, 2020
Author(s)
Y. Chen, Jonathan Gaudet, S. Dasgupta, G. G. Marcus, J. Lin, T. Chen, T. Tomita, M. Ikhlas, Yang Zhao, Wangchun Chen, Matthew B. Stone, O. Tchernyshyov, S. Nakatsuji, Collin L. Broholm
Quantum materials with strong transport responses to disparate physical quantities are of great fundamental significance and may hold technological potentials. The interplay between interactions and topology drive such responses through the effects of

CONTAM User Guide and Program Documentation Version 3.4

August 3, 2020
Author(s)
William Stuart Dols, Brian Polidoro
This manual describes the computer program CONTAM version 3.4, developed by NIST. CONTAM is a multizone indoor air quality and ventilation analysis program designed to help determine airflows, contaminant concentrations, and occupant exposure in buildings

Distinct magneto-Raman signatures of spin-flip phase transitions in CrI3

August 3, 2020
Author(s)
Amber D. McCreary, Thuc T. Mai, Franz Utermohlen, Jeffrey R. Simpson, Kevin F. Garrity, Xiaozhou Feng, Dmitry Shcherbakov, Yanglin Zhu, Jin Hu, Daniel Weber, Kenji Watanabe, Takashi Taniguchi, Joshua Goldberger, Zhiqiang Mao, Chun Ning Lau, Yuanming Lu, Nandini Trivedi, Rolando Valdes Aguilar, Angela R. Hight Walker
The discovery of 2-dimensional (2D) materials, such as CrI3, that retain magnetic ordering down to monolayer thickness, and even more have layer-dependent magnetic properties has led to a plethora of research in 2D magnetism. Here, we report a magneto

General Methods for Suppressing the Light Shift in Atomic Clocks Using Power Modulation

August 3, 2020
Author(s)
V Yudin, M. Y. Basalaev, A. V. Taichenachev, Juniper Pollock, Zachary Newman, Moshe Shuker, Azure L. Hansen, Matthew Hummon, Elizabeth Donley, John Kitching
We show that the light shift in atomic clocks can be suppressed using time variation of the interrogation field intensity. By measuring the clock output at two intensity levels, error signals can be generated that simultaneously stabilize a local

Laser-cooling in a chip-scale platform

August 3, 2020
Author(s)
James P. McGilligan, Kaitlin R. Moore, Argyrios Dellis, Gabriela Martinez, E. de Clercq, Paul Griffin, A S. Arnold, E Riis, Rodolphe Boudot, John Kitching
Chip-scale atomic devices built around micro-fabricated alkali vapor cells are at the forefront of compact metrology and atomic sensors. We demonstrate a micro-fabricated vapor cell that is actively pumped to ultra-high-vacuum (UHV) to achieve laser

Security Considerations for Exchanging Files Over the Internet

August 3, 2020
Author(s)
Karen Scarfone, Matthew Scholl, Murugiah Souppaya
Every day, in order to perform their jobs, workers exchange files over the Internet through email attachments, file sharing services, and other means. To help organizations reduce potential exposure of sensitive information, NIST has released a new

A Phase Measurement Method to Guarantee the Traceability of the Calibration System

August 1, 2020
Author(s)
Nicholas G. Paulter Jr., Sergio Rapuano, Pasquale Daponte, Luca De Vito, Francesco Picariello, Ioan Tudosa
In this paper, an innovative phase measurement method of sinusoidal signals is presented and a proof-of-concept implementation is demonstrated. The method allows measuring the phase at the output of a high frequency sinewave signal generator, respect to a
Displaying 6126 - 6150 of 74371