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NIST Authors in Bold

Displaying 26 - 50 of 1694

Electrically Driven Exchange Bias via Solid State Magneto-Ionics

April 13, 2022
Author(s)
Peyton Murray, , , , , Alexander Grutter, Brian Kirby,
Electrically induced ionic motion offers a new way to realize voltage-controlled magnetism, opening the door to a new generation of logic, sensor, and data storage technologies. Here, we demonstrate an effective approach to magneto-ionically and

Elucidating Proximity Magnetism through Polarized Neutron Reflectometry and Machine Learning

April 13, 2022
Author(s)
Nina Andrejevic, Zhantao Chen, Thanh Nguyen, Leon Fan, Henry Heiberger, Valeria Lauter, Ling-Jie Zhou, Yi-Fan Zhao, Cui-Zu Chang, Alexander Grutter, Mingda Li
Polarized neutron reflectometry (PNR) is a powerful technique to interrogate the structures of multilayered magnetic materials with depth sensitivity and nanometer resolution. However, reflectometry profiles often inhabit a complicated objective function

Late Stage Domain Coarsening Dynamics of Lamellar Block Copolymers

April 13, 2022
Author(s)
Jack F. Douglas, Maninderjeet Singh, Wenjie Wu, Vinay Nuka, Joseph Strzalka, Alamgir Karim
Block copolymer (BCP) phase separation is an intriguing phenomenon whose dynamics can be expected to differ significantly from that of the polymer blends due to constraint of chain connectivity that limits the ultimate scale of phase separation and the

Thermal Shrinkage Reveals the Feasibility of Pulse-delay Photocuring Technique

April 13, 2022
Author(s)
Sri Vikram Palagummi, Taeseung Hong, Li Jiang, Martin Chiang
Objectives: To resolve applicability of the pulse-delay photocuring technique to restorative dental composites as a clinical strategy for the reduction in the detrimental polymerization stress. Methods: Model dental composites with high and low-filler

A Roadmap for LIMS at NIST Material Measurement Laboratory

April 11, 2022
Author(s)
Gretchen Greene, Jared Ragland, Zachary Trautt, June W. Lau, Raymond L. Plante, Joshua Taillon, Adam Abel Creuziger, Chandler A. Becker, Joe Bennett, Niksa Blonder, Lisa Borsuk, Carelyn E. Campbell, Adam Friss, Lucas Hale, Michael Halter, Robert Hanisch, Gary R. Hardin, Lyle E. Levine, Samantha Maragh, Sierra Miller, Chris Muzny, Marcus William Newrock, John Perkins, Anne L. Plant, Bruce D. Ravel, David J. Ross, John Henry J. Scott, Christopher Szakal, Alessandro Tona, Peter Vallone
Instrumentation generates data faster and in higher quantity than ever before, and interlaboratory research is in historic demand domestically and internationally to stimulate economic innovation. Strategic mission needs of the NIST Material Measurement

Disinfection of Respirators with Ultraviolet Radiation

March 25, 2022
Author(s)
Dianne L. Poster, Matthew Hardwick, C Cameron Miller, Michael A. Riley, W. W. Shanaka I. Rodrigo, Andras E. Vladar, John D. Wright, Christopher D. Zangmeister, Clarence Zarobila, Jeremy Starkweather, John Wynne, Jason Yilzarde
Data for interpreting virus inactivation on N95 face filtering respirators (FFRs) by ultraviolet (UV) radiation are important in developing UV strategies for N95 FFR disinfection and reuse for any situation, whether it be everyday practices, contingency

Influence of Dimensionality on the Charge Density Wave Phase of 2H-TaSe2

March 23, 2022
Author(s)
Sugata Chowdhury, Albert Rigosi, Heather Hill, David B. Newell, Angela R. Hight Walker, Francesca Tavazza, Andrew Briggs
Metallic transition metal dichalcogenides like tantalum diselenide (TaSe2) exhibit exciting behaviors at low temperatures including the emergence of charge density wave (CDW) states. In this work, density functional theory (DFT) is used to classify the

Color-Temperature Dependence of Indoor Organic Photovoltaic Performance

March 5, 2022
Author(s)
Boya Zhang, Justin Bonner, Lakshmi Murthy, Thien Nguyen, Fong-Yi Cao, Yen-Ju Cheng, Behrang Hamadani, Julia Hsu
Organic materials are uniquely suited for indoor light energy harvesting because they absorb mostly in the visible spectrum and the absence of ultraviolet light minimizes their degradation. However, the performance of photovoltaic devices under indoor

In-situ Stress Measurements During CO Adsorption onto Pt

February 24, 2022
Author(s)
David Raciti, Gery R. Stafford, Kathleen Schwarz, John Vinson
The change in surface stress associated with the adsorption and oxidative stripping of carbon monoxide (CO) on (111)-textured Pt is examined using the wafer curvature method in 0.1 M KHCO3 electrolyte. The curvature of the Pt cantilever electrode was

KEY COMPARISON - Instrumented Charpy tests on low- and high-energy specimens

February 18, 2022
Author(s)
Enrico Lucon, Renato Reis Machado
This report describes a CIPM Key Comparison through the SIM/MWG-7 organization, concerning instrumented impact testing of low-energy (20 J) and high-energy (100 J) Charpy V-notch specimens. In this Comparison, various instrumented and non-instrumented data

Intermediate spin pair relaxation through modulation of isotropic hyperfine interaction in frequency-swept spin-dependent recombination in 4H-SiC

February 7, 2022
Author(s)
James Ashton, Brian Manning, Stephen Moxim, Fedor Sharov, Patrick Lenahan, Jason Ryan
Electrically detected magnetic resonance (EDMR) measurements have been extended to sub-mT measurements through utilization of frequency sweeping of the oscillating magnetic field, where conventional electron paramagnetic resonance-based measurements

Detection of individual spin species via frequency-modulated charge pumping

February 2, 2022
Author(s)
James Ashton, Mark Anders, Jason Ryan
We utilize the recently developed frequency-modulated charge pumping technique to detect a single charge per cycle, which strongly suggests a single Si/SiO2 interface trap. This demonstration in sub-micron MOSFETs, in which scaling of the gate oxide yields

Dynamically Preferred State with Strong Electronic Fluctuations from Electrochemical Synthesis of Sodium Manganate

February 2, 2022
Author(s)
Xi Chen, Yichao Wang, Yiping Wang, Rebecca Dally, Kamila Wiaderek, Tianyu Qiao, Jue Liu, Enyuan Hu, Kenneth Burch, Jeffrey W. Lynn, Xin Li
Electrochemical (de-)intercalation is a delicate method to precisely control the alkaline ion composition in alkaline transition metal oxides. Due to the interactions among alkaline ions, and with metal oxide layers, alkaline and transition metal charge
Displaying 26 - 50 of 1694