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Search Publications

NIST Authors in Bold

Displaying 1026 - 1050 of 143596

Extracting the electronic structure of light elements in bulk materials through a Compton scattering method in the readily accessible hard X-ray regime

May 28, 2024
Author(s)
Veenavee Kothalawala, Tejas Guruswamy, orlando Quaranta, Umeshkumar Manibhai Patel, Andrey Yakovenko, keith taddei, Meiying Zhang, Kelsey Morgan, Joel Weber, Daikang Yan, Daniel Swetz, Ilja Makkonen, Hemantha Kumar Yeddu, Arun Bansil, Antonino Miceli, Johannes Nokelainen, Bernardo Barbiellini
Our Compton profile measurements of Ti and TiH2 using readily available hard X-ray radiation at 27.5 keV, detected by both a Hitachi Vortex silicon-drift detector (SDD) and a high-resolution superconducting Transition-edge sensor (TES) array, are found to

Identification of Candidate Protein Biomarkers Associated with Domoic Acid Toxicosis in Cerebrospinal Fluid of California Sea Lions (Zalophus californianus)

May 28, 2024
Author(s)
Gautam Ghosh, Ben Neely, Alison Bland, Emily Whitmer, Cara Field, Padraig Duignan, Michael Janech
Since 1998, California sea lion (Zalophus californianus) stranding events associated with domoic acid toxicosis have consistently increased. Currently there are no practical non-lethal clinical tests for the diagnosis of domoic acid toxicosis (DAT) that

Inelastic Neutron Scattering Study of Field Dependence of Magnetic Excitations in CoTiO3

May 28, 2024
Author(s)
Bo Yuan, Ezekiel Horsley, M. B. Stone, Nicholas Butch, Guangyong Xu, Guo-Jiun Shu, J. P. Clancy, Young-June Kim
We report field-dependent high-resolution inelastic neutron scattering (INS) measurements on the honeycomb lattice magnet, CoTiO3, to study the evolution of its magnon excitations across a spin reorientation transition driven by an in-plane magnetic field

Optical n(p, T_90) measurement suite 2: H_2O and D_2O

May 28, 2024
Author(s)
Patrick Egan, Yuanchao Yang
A suite of measurements of refractive index n(p, T_90) is reported for gas phase ordinary water H_2O and heavy water D_2O. The methodology is optical refractive index gas metrology, operating at laser wavelength 633 nm and covering the range (293 T_90 43

Composing Homologous Series on Demand

May 25, 2024
Author(s)
Vladimir Diky, Ala Bazyleva, Andrei F. Kazakov, Angela Li
Compound families or homologous series are frequently used for analysis and prediction of properties of chemical substances. A simple method is proposed for automated composing of such series.

Fiber-coupled 2 mL vacuum-gap Fabry-Perot reference cavity for laser stabilization

May 25, 2024
Author(s)
Charles McLemore, Naijun Jin, Megan Kelleher, Yizhi Luo, Dahyeon Lee, Yifan Liu, Takuma Nakamura, David Mason, Peter Rakich, Scott Diddams, Franklyn Quinlan
Vacuum-gap Fabry-Perot cavities are indispensable tools for vastly improving the frequency stability of lasers, with applications across a diverse range of scientific and industrial pursuits. However, making these cavity-based laser stabilization systems

Inhomogeneous High Temperature Melting and Decoupling of Charge Denisty Waves in Spin-Triplet Superconductor UTe2

May 25, 2024
Author(s)
Alexander LaFleur, Hong Li, Corey Frank, Muxian Xu, Siyu Cheng, Ziqiang Wang, Nicholas Butch, Ilija Zeljkovic
Charge, spin and Cooper-pair density waves have now been widely detected in exotic superconductors. Understanding how these density waves emerge — and become suppressed by external parameters—is a key research direction in condensedmatter physics. Here we

Letter to the editor: Unit one is intrusive

May 24, 2024
Author(s)
David W. Flater
The SI brochure's treatment of quantities that it regards as dimensionless, with the associated unit one, requires certain physical quantities to be regarded as simply numbers. The resulting formal system erases the nature of these quantities and excludes

Standards and Metrology for Viral Vectors as Molecular Tools: Outcomes from a CCQM Workshop

May 24, 2024
Author(s)
Janathan Campbell, Neil Almond, Y Bae, Ravneet Bhuller, Andrea Briones, S-Y CHO, Megan Cleveland, Thomas Cleveland, Francis Galaway, Hua-Jun He, U Herbrand, Jim Huggett, Sarah Kempster, Ibolya Kepiro, Afifa Khan, Edward Kwee, Wilson Li, Sheng Lin-Gibson, Luise Luckau, Caterina Minelli, M Ryadnov, I Searing, Lili Wang, Alexandra Whale, Julian Braybrook
Viral vectors are agents enabling gene transfer and genome editing and have widespread utility across the healthcare and biotechnology sectors. In January 2023, the International Bureau for Weights and Measures' Consultative Committee for Amount of

Dual-comb correlation spectroscopy of thermal light

May 23, 2024
Author(s)
Eugene Tsao, Alexander Lind, Connor Fredrick, Ryan Cole, Peter Chang, Kristina Chang, Dahyeon Lee, Matthew Heyrich, Nazanin Hoghooghi, Franklyn Quinlan, Scott Diddams
The detection of light of thermal origin is the principal means by which humanity has learned about our world and the cosmos. In optical astronomy, in particular, direct detection of thermal photons and the resolution of their spectra have enabled

Spherical harmonic reconstruction and preferred parameter research of 3D morphology of manufactured aggregate with different particle sizes

May 23, 2024
Author(s)
Edward Garboczi, Peng Gao, Juan Wu, Peiyun Qiu, Jingzhe Li, Hongjie Liu, Zhiwei Qian, Jiangziong Wei, Qijun Yu
The spherical harmonic (SH) series have been widely used in recent years to reconstruct three-dimensional (3D) particle shape for reducing the memory requirements of morphological data and facilitating the calculation of various particle shape parameters

Mixture effects of PFAS on embryonic and larval sheepshead minnows (Cyprinodon variegatus)

May 22, 2024
Author(s)
Philip Tanabe, Peter Key, Katy Chung, Emily Pisarski, Jessica Reiner, Alix Rodowa, Jason Magnuson, Marie DeLorenzo
Per- and polyfluoroalkyl substances (PFAS) are ubiquitous and persistent environmental contaminants originating from many everyday products. Perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) are two PFAS that are commonly found at high

Observation of a promethium complex in solution

May 22, 2024
Author(s)
Bruce D. Ravel, Darren Driscoll, Frankie White, SUBHAMAY PRAMANIK, Jeffrey Einkauf, Dmytro Bykov, Santanu Roy, Richard Mayes, Laetitia Delmau, Samantha Schrell, Thomas Dyke, April Miller, Matt Silveira, Silveira2 van Cleve, Roy Copping, Sandra Davern, Santa Jansone-Popova, Ilja Popovs, Alexander Ivanov
Lanthanide rare earth metals are ubiquitous in modern technologies, but we know little about chemistry of the 61st element, promethium (Pm), a lanthanide which is highly radioactive and inaccessible. Despite its significance, Pm has conspicuously been

Homogenization of Large Batch Frozen Materials Using the Palla-VM-KT Vibrating Mill

May 21, 2024
Author(s)
Debra Ellisor, Amanda Moors, Jennifer Hoguet, Jennifer Ness, Amanda Capuano, Olivia Franco
The Biospecimen Science Group at the National Institute of Standards and Technology (NIST) Biorepository has been responsible for the curation, maintenance, and preparation of biological specimens at cryogenic temperatures since 2002. The team's expertise

NIST's Engagement with CCQM Studies from 1992 to 2023: History and Performance

May 21, 2024
Author(s)
David L. Duewer, Christina Cecelski, Megan Cleveland, Nancy Lin, Katrice Lippa, Jacqueline L. Mann, John L. Molloy, Michael Nelson, James E. Norris, Kenneth W. Pratt, Sumona Sarkar, Hratch G. Semerjian, Robert L. Watters
This report documents the engagement and measurement performance of the National Institute of Standards and Technology (NIST) in studies coordinated by the Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology (CCQM) from 1992

Ring-exchange interaction effects on magnons in the Dirac magnet CoTiO3

May 21, 2024
Author(s)
Yufei Li, Thuc Mai, Mohammed Karaki, Evan Jasper, Kevin Garrity, Chase Lyon, Daniel Shaw, Timmothy DeLazzer, Adam Biacchi, Rebecca Dally, Daniel Heligman, Jared Gdanski, Tehseen Adel, Maria Munoz, Alex Giovannone, Amit Pawbake, Clement Faugeras, Jeffrey Simpson, Kate Ross, Nandini Trivedi, Yuanming Lu, Angela R. Hight Walker, Rolando Valdes Aguilar
In magnetically ordered materials with localized electrons, it has been known for a long time [1–3] that the fundamental interactions are due to exchange of electrons. In most cases only the interaction between pairs of spins in neighboring atoms is taken

Ensuring accuracy in the development and application of nucleic acid amplification tests (NAATs) for infectious disease

May 20, 2024
Author(s)
Jim Huggett, Denise O'Sullivan, Simon Cowen, Megan Cleveland, Jacob Moran-Gilad, Amanda Winter, Michael Messenger, Julian Braybrook
Diagnostic tests were heralded as crucial during the COVID-19 pandemic with most of the key methods using bioanalytical approaches. Bioanalytical techniques can be loosely described as methods that identify and quantify larger molecules (than conventional
Displaying 1026 - 1050 of 143596