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Search Publications

NIST Authors in Bold

Displaying 7776 - 7800 of 73751

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

Additive Manufacturing of Steels and Stainless Steels

August 1, 2020
Author(s)
Carelyn E. Campbell, Mark R. Stoudt, Fan Zhang
This work briefly reviews the classification of the different types of steels, the most common AM processes used for steel and the available powder feedstock. The characteristics of the as-built microstructure, including porosity, inclusions and residual

Community Resilience-Focused Technical Investigation of the 2016 Lumberton, North Carolina Flood: An Interdisciplinary Approach

August 1, 2020
Author(s)
John W. van de Lindt, Walter G. Peacock, Judith Mitrani-Reiser, Nathanael Rosenheim, Derya Deniz, Maria Dillard, Tori Tomiczek, Andrew Graettinger, Patrick Crawford, Kenneth W. Harrison, Andre Barbosa, Jennifer Tobin, Jennifer Helgeson, Lori Peek, Mehrdad Memari, Elaina Sutley, Sara Hamideh, Donghwan Gu, Stephen Cauffman, Juan Fung
In early October 2016, Hurricane Matthew crossed North Carolina (NC) as a Category 1 storm, with some areas receiving 0.38 m to 0.46 m (15 to 18 in) of rainfall on already saturated soil. The National Institute of Standards and Technology (NIST) funded

Dominant factors for fracture at the micro-scale in electrodeposited nickel alloys

August 1, 2020
Author(s)
May L. Martin, Li-Anne Liew, David T. Read, Todd Christensen, Frank W. DelRio, John Geaney
Two different LIGA electrodeposited nickel alloys displayed distinct fracture modes after meso- scale tensile testing. The Ni-Co alloy failed in a ductile manner, while the Ni-Fe alloy failed in a more brittle-appearing manner. Various factors affecting

Early stage nucleation in barium disilicate glass

August 1, 2020
Author(s)
Ling Cai, Randall E. Youngman, David E. Baker, Aram Rezikyan, Minghui Zhang, Bryan Wheaton, Indrajit Dutta, Bruce G. Aitken, Andrew J. Allen
Early stage nucleation in silicate glasses is often evidenced by formation of nanosized regions that are stoichiometrically different from the surrounding matrix. The structural origin of these early stage nucleation sites is of great interest in gaining a

NIST cloud computing forensic science challenges:

August 1, 2020
Author(s)
Martin Herman, Michaela Iorga, Ahsen Michael Salim, Robert H Jackson, Mark R Hurst, Ross Leo, Richard Lee, Nancy M Landreville, Anand Kumar Mishra, Yien Wang, Rodrigo Sardinas

Numerical and Experimental Studies of Extinguishment of Cup-Burner Flames by C6F12O

August 1, 2020
Author(s)
Fumiaki Takahashi, Viswanath R. Katta, Valeri Babushok, Gregory Linteris
The extinguishment processes of cup-burner flames by adding a halon-replacement fire-extinguishing agent C6F12O (Novec 1230) to coflowing air in normal gravity have been studied computationally and experimentally. The time-dependent, axisymmetric numerical

The Antioxidant Vitamin E as a Membrane Raft Modulator: Tocopherols do not Abolish Lipid Domains

August 1, 2020
Author(s)
Mitchell DiPasquale, Michael H. Nguyen, Brett W. Rickeard, Nicole Cesca, Christopher Tannous, Stuart R. Castillo, John Katsaras, Elizabeth Kelley, Frederick A. Heberle, Drew Marquardt
A great deal of individuals across North America regularly supplement their diet with the antioxidant, vitamin E. This billion-dollar supplementation industry encourages the use of vitamin E with little evidence supporting its actual health benefits
Displaying 7776 - 7800 of 73751
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