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NIST Authors in Bold

Displaying 3276 - 3300 of 3362

Benchmarking Active Learning Strategies for Materials Optimization and Discovery

July 9, 2022
Author(s)
Alex Wang, Haotong Liang, Austin McDannald, Ichiro Takeuchi, A. Gilad Kusne
Autonomous physical science is revolutionizing materials science. In these systems, machine learning (ML) controls experiment design, execution and analysis in a closed loop. Active learning, the ML field of optimal experiment design, selects each

Stacking Faults Assist Lithium-Ion Conduction in a Halide-Based Superionic Conductor

April 6, 2022
Author(s)
Elias Sebti, Hayden Evans, Hengning Chen, Peter Richardson, Kelly White, Raynald Giovine, Krishna P. Koirala, Yaobin Xu, Eliovardo Gonzalez-Correa, Chongmin Wang, Craig Brown, Anthony Cheetham, Pieremanuele Canepa, Raphaele Clement
In the pursuit of urgently-needed, energy dense solid-state batteries for electric vehicle and portable electronics applications, halide solid electrolytes offer a promising path forward with exceptional compatibility against high-voltage oxide electrodes

Prospects for assembling ultracold radioactive molecules from laser-cooled atoms

February 21, 2022
Author(s)
Jacek Klos, Hui Li, Eite Tiesinga, Svetlana Kotochigova
Molecules with unstable isotopes often contain heavy and deformed nuclei and thus possess a high sensitivity to parity-violating effects, such as Schiff moments. Currently the best limits on Schiff moments are set with diamagnetic atoms. Polar molecules

Simulation of a Single Asperity Impacts at Head-Disk Interface

October 12, 2021
Author(s)
Tze J. Chuang, Stephen M. Hsu
During the track accessing mode of a hard disk drive, the flying height of the slider over the disk surface becomes smaller and smaller as the demand in data storage a real density increases. As a result, the propensity of glide avalanche is bound to

The Goddard High Resolution Spectrograph: In-Orbit Performance

October 12, 2021
Author(s)
S R. Heap, J L. Linsky
The in-orbit performance of the Goddard High Resolution Spectrograph onboard the Hubble Space Telescope (HST) is presented. This report covers the pre-COSTAR period, when instrument performance was limited by the effects of spherical aberration of the

Enabling adoption of 2D-NMR for the higher order structure assessment of monoclonal antibody therapeutics

January 1, 2019
Author(s)
Robert G. Brinson, John P. Marino, Frank Delaglio, Luke W. Arbogast, Ryan M. Evans, Anthony J. Kearsley, Yves Aubin, Gregory Pierens, Xinying Jia, David Keizer, Jonas Stahle, Goran Widmalm, Chad Lawrence, Patrick Reardon, John Cort, Koichi Kato, Stuart Parnham, Andreas Blomgren, Torgny Rundlof, Kang Chen, David Keire, Thea Suter-Stahel, Gerhard Wider, Donna Baldisseri, Julie Wu, Mats Wikstrom, Medhi Mobli
Of the top ten drugs on the global market in 2016, seven of them are biologics with a combined market value of over US$60 billion. Moreover, around 2,800 biopharmaceuticals, many of them monoclonal antibodies (mAbs), are in some stage of clinical

Tuning Biocompatible Block Copolymer Micelles by Varying Solvent Composition: Core/Corona Structure and Solvent Uptake

May 4, 2017
Author(s)
Tyler J. Cooksey, Avantika Singh, Kim Mai Le, Shu Wang, Elizabeth Kelley, Lilin He, Sameer Vajjala Kesava, Enrique D. Gomez, Bryce E. Kidd, Louis A. Madsen, Megan L. Robertson
The structural properties and solvent uptake of biocompatible poly(ethylene oxide-b/}-ε-caprolactone) (PEO-PCL) diblock copolymers in deuterated water (D 2O)/tetrahydrofuran (THF d8) mixtures were investigated with a combination of small-angle neutron

A New Generation of Magnetoencephalography: Room Temperature Measurements using Optically-Pumped Magnetometers

January 25, 2017
Author(s)
Elena Boto, Sofie S. Meyer, Vishal Shah, Orang Alem, Svenja A. Knappe, Peter Kruger, Mark Fromhold, Peter G. Morris, Richard W. Bowtell, Gareth R. Barnes, Matthew J. Brookes, Mark Lim
Significant advances in the field of quantum sensing mean that magnetic field detectors, operating at room temperature, are now able to achieve sensitivity similar to that of cryogenically cooled devices (SQUIDs). This means that room temperature

Eu 3+ -Doped Wide Band Gap Zn 2 SnO 4 Semiconductor Nanoparticles: Structure and Luminescence

August 3, 2016
Author(s)
Mirjana NMN Dimitrievska, Tamara B. Ivetic, Alexander P. Litvinchuk, Andrew Fairbrother, Bojan B. Miljevic, Goran R. Strbac, Alejandro Perez-Rodriguez, Svetlana R. Lukic-Petrovic
Nanocrystalline Zn 2SnO 4powders doped with Eu 3+ ions were synthesized via a mechanochemical solid-state reaction method followed by post annealing in air at 1200 °C. X-ray diffraction (XRD), energy-dispersive X-ray (EDX), Raman and photoluminescence (PL)

Electrical Units in the New SI: Saying Goodbye to the 1990 Values

May 12, 2016
Author(s)
Nick Fletcher, Gert Rietveld, James K. Olthoff, Ilya F. Budovsky
The proposed redefinition of several SI base units is a topic that has been on the metrology agenda for the last decade. The general principles and the motivation for the changes have been presented at the NCSLI several times. However, recent progress on

Observation of Iron Spin-States using Tabletop X-ray Emission Spectroscopy and Microcalorimeter Sensors

December 2, 2015
Author(s)
Young Il Joe, Galen C. O'Neil, Luis Miaja Avila, Joseph W. Fowler, Kevin L. Silverman, Daniel S. Swetz, Joel N. Ullom, Ralph Jimenez
X-ray emission spectroscopy (XES) is a powerful probe of the electronic and chemical state of elemental species embedded within more complex compounds. X-ray sensors that combine high resolving power and high collecting efficiency are desirable for photon

3 He Spin Filter Based Polarized Neutron Capability at the NIST Center for Neutron Research

July 24, 2014
Author(s)
WangChun Chen, Thomas R. Gentile, Ross W. Erwin, Shannon Watson, Qiang NMN Ye, Kathryn L. Krycka, Brian B. Maranville
A 3He neutron spin filter (NSF) program for polarized neutron scattering was launched in 2006 as part of the National Institute of Standards and Technology (NIST) Center for Neutron Research (NCNR) Expansion Initiative. The goal of the project was to

Atomic Scale Defects Associated with the Negative Bias Temperature Instability

January 1, 2014
Author(s)
Jason P. Campbell, P. M. Lenahan
We utilize magnetic resonance measurements to identify the fundamental atomic-scale defect structures involved in the negative bias temperature instability. In gate stacks composed of pure silicon dioxide, we find a degradation mechanism directly involving

Reversible effect of strain on transport critical current in Bi 2 Sr 2 CaCu 2 O 8+x superconducting wires: A modified descriptive strain model

December 5, 2011
Author(s)
Najib Cheggour, Xifeng Lu, T G. Holesinger, Theodore C. Stauffer, J Jiang, Loren F. Goodrich
A reversible strain effect on transport critical current I c was found in Bi 2Sr 2CaCu 2O 8+x (Bi-2212) high-temperature superconducting round wires. I c showed unambiguous reversibility at 4 K and 16 T up to an irreversible strain limit of about 0.3 % in

Modifications to the NIST Reference Measurement Procedure (RMP) for the Determination of Serum Glucose by Isotope Dilution Gas Chromatography/ Mass Spectrometry

April 27, 2010
Author(s)
Jocelyn L. Prendergast, Lorna T. Sniegoski, Michael J. Welch, Karen W. Phinney
NIST has been providing a Standard Reference Material (SRM) for glucose in human serum for many years to support accuracy in health care measurements. The definitive method (DM), now known as the reference measurement procedure (RMP), for the analysis of

Clifford Glenwood Shull

March 31, 2010
Author(s)
Robert D. Shull
In 1975 Clifford Glenwood Shull was elected to membership in the National Academy of Science. He had earlier, 1956, been admitted to the American Academy of Arts and Sciences, and would in 1994 be awarded the Nobel Prize in Physics. These and other honors
Displaying 3276 - 3300 of 3362
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