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Search Publications

NIST Authors in Bold

Displaying 101 - 125 of 2320

Microstructure and mechanical properties of laser powder bed fusion Ti-6Al-4V after HIP treatments with varied temperatures and cooling rates

October 22, 2024
Author(s)
Nicholas Derimow, Jake Benzing, Howard Joress, Austin McDannald, Ping Lu, Frank DelRio, Newell Moser, Matthew Connolly, Alec Saville, Orion Kafka, Chad Beamer, Ryan Fishel, Chris Hadley, Nikolas Hrabe
This work investigated non-standard HIP cycles for PBF-L Ti-6Al-4V and characterized microstructure and tensile properties to compare between material that originated from the same build. For 920 °C, faster cooling rates (100 °C/min, 2000 °C/min) were

Self-diffusion of liquid deuterium hydride and liquid tritium

October 8, 2024
Author(s)
T. Prisk, S. Hanna, Richard Azuah
We present a quasi-elastic neutron scattering study of liquid deuterium hydride carried out using the Disk Chopper Spectrometer at the National Institute of Standards and Technology. Under saturated vapor pressure, the self-diffusion constant of deuterium

Speed of Sound for Understanding Metals in Extreme Environments

October 7, 2024
Author(s)
Elizabeth Rasmussen, Boris Wilthan
Knowing material behavior is crucial to successful design, especially given the growing number of next-generation energy, defense, and manufacturing systems operating in extreme environments. Specific applications for materials in extreme environments

Visualizing Shockwave Interactions and Sub-Catastrophic Damage in Materials via Mechanophores

October 7, 2024
Author(s)
Polette Centellas, Kyle Mehringer, Andrew Bowman, Katherine Evans, Parth Vagholkar, Travis Thornell, Liping Huang, Sarah Morgan, Christopher Soles, Yoan Simon, Edwin Chan
Understanding the physical and chemical response of materials to impulsive deformation is crucial for applications ranging from soft robotic locomotion to space exploration to seismology. However, investigating material properties at extreme strain rates

Vertically Graded Fe-Ni Alloys with Low Damping and a Sizeable Spin-Orbit Torque

October 4, 2024
Author(s)
Rachel Maizel, Shuang Wu, Purnima P. Balakrishnan, Alexander Grutter, Christy Kinane, Andrew Caruana, Prabandha Nakarmi, Bhuwan Nepal, David Smith, Youngmin Lim, Juila Jones, Wyatt Thomas, Jing Zhao, F. Michel, Tim Mewes, Satoru Emori
Energy-efficient spintronic devices require a large spin-orbit torque (SOT) and low damping to excite magnetic precession. In conventional devices with heavy-metal/ferromagnet bilayers, reducing the ferromagnet thickness to approximately 1 nm enhances the

Nanotechnology solutions for the climate crisis

October 1, 2024
Author(s)
Maria F. Campa, Craig Brown, Peter Byrley, Jason Delborne, Nicholas Glavin, Craig Green, Mark Griep, Tina Kaarsberg, Igor Linkov, Jeffrey B. Miller, Joshua E. Porterfield, Birgit Schwenzer, Quinn Spadola, Branden Brough, James Warren
Climate change is one of humankind's biggest challenges, leading to more frequent and intense climate extremes, including heatwaves, wildfires, hurricanes, ocean acidification, and increased extinction rates. Nanotechnology already plays an important role

Setting standards for data driven materials science

October 1, 2024
Author(s)
Keith Butler, Kamal Choudhary, Gabor Csanyi, Alex Ganose, Sergei Kalinin, Dane Morgan
A young Steve Jobs once called computers 'bicycles for the mind' – he was referring to the dramatic decrease in the energetic cost of transportation that could be obtained with the bicycle, which breaks all scaling laws for how efficiently an animal can

Effects of Weathering and Formulation on the Properties of Vinyl Siding

September 23, 2024
Author(s)
Ronald Lankone, Mauro Zammarano, Song Jhang, Ickchan Kim, David Goodwin, Gianluca Sarti, Stefano Gardi, Camillo Cardelli, Lipiin Sung
Vinyl siding has become a popular choice for residential exteriors across the United States. In its insulated form, this siding includes a shell, capstock, and substrate, that encase a foamed material, serving as an efficient insulating material. While it

Insights into transient photovoltage lifetimes via dark J-V analysis in perovskite solar cells

September 23, 2024
Author(s)
Ganga Neupane, John Roller, Susanna Thon, Sheng Fu, Zhaoning Song, Yanfa Yan, Behrang Hamadani
Transient photovoltage (TPV) decay measurements have commonly been used to estimate the charge carrier lifetimes in solar cell devices. However, it has recently been demonstrated that an intrinsic material property such as the effective bulk carrier

Synthesis, Structure, and Ion Conduction of Potassium Carbazolides for Potassium Ion Solid-State Electrolytes

September 20, 2024
Author(s)
Jiaquan Guo, Yang Yu, Khai Chen Tan, Qijun Pei, Zhao Li, Yuting Wang, Alexis Munyentwali, Hui Wu, Teng He, Ping Chen
Potassium ion batteries gradually have aroused worldwide interest due to the limited lithium resource. However, the research on the solid-state potassium-ion batteries is at its very early stage. The lack of electrolytes with high ionic conductivity and in

Effect of Cosolvents on the Phase Separation of Polyelectrolyte Complexes

September 13, 2024
Author(s)
Yuanchi Ma, Robert Ivancic, Jan Obrzut, Debra Audus, Vivek Prabhu
Evidence is shown that cosolvent mixtures control the coacervation of mixtures of oppositely charged polyelectrolytes. Binary and ternary solvent mixtures lead to non-monotonic solubility as a function of measured average dielectric constants of the

Complex Precipitation Behavior in a Co-free High Entropy Alloy during Aging

September 11, 2024
Author(s)
Matthew Luebbe, Fan Zhang, Jonathan Poplawsky, Jiaqi Duan, Haiming Wen
High entropy alloys (HEAs) demonstrate high strength, thermal stability, and irradiation resistance, making them desirable for applications in nuclear reactors and other harsh environments. Many existing HEAs contain cobalt (Co), which makes them

Additive Construction in Practice - Realities of Acceptance Criteria

September 4, 2024
Author(s)
Megan Kreiger, Eric Kreiger, Stephan Mansour, Sean Monkman, Mohammad Aghajani Delavar, Petros Sideris, Casey Roberts, Mathew Friedell, Shawn Platt, Scott Jones
Additive Construction has increased dramatically within the United States in the last few years. Efforts to develop acceptance criteria have increased since 2020 and are being developed through integration of research efforts and early engagement with

Assessing girth weld quality of pipeline steels and their susceptibility to hydrogen embrittlement

August 28, 2024
Author(s)
Zack Buck, Newell Moser, Nicholas Derimow, May Ling Martin, Damian Lauria, Enrico Lucon, Douglas Stalheim, Peter Bradley, Matthew Connolly
Hydrogen has long been considered a viable carbon-free option for ever-increasing societal desires to transform our energy infrastructure towards more renewable and alternative technologies. However, the effects of hydrogen-assisted damage mechanisms that

Continuum of Spin Excitations in the Exactly Solvable Triangular-Lattice Spin Liquid CeMgAl11O19

August 28, 2024
Author(s)
Bin Gao, Tong Chen, Chunxaio Liu, Mason Klemm, Shu Zhang, Zhen Ma, Xianghan Xu, CHOONGJAE WON, Dongzhe Dai, Gregory McCandless, Maiko Kofu, Naoki Murai, Stephen Moxim, Jason Ryan, Xiaozhou Huang, Xiaoping Wang, Julia Chan, Shiyan Li, Sang-Wook Cheong, Oleg Tchernyshyov, Leon Balents, Pengcheng Dai
In magnetically ordered insulators, elementary quasiparticles manifest as spin waves - collective motions of localized magnetic moments that propagate through the lattice - observed via inelastic neutron scattering. In effective spin- 1/2 systems where

Mechanical Metallurgy on Columbia Gas X100 Experimental Pipe

August 28, 2024
Author(s)
Dash Weeks, Ryan White, Jake Benzing, Enrico Lucon, Nicholas Derimow, Ashley Kroon, Robert Smith
This study evaluates the material properties of an X100 pipeline steel extracted from an experimental transmission pipeline section placed into service in the 1960s. The purpose is to compare these properties with current X100 steel standards

Extensive hydrogen incorporation is not necessary for superconductivity in topotactically reduced nickelates

August 27, 2024
Author(s)
Purnima P. Balakrishnan, Dan F. Segedin, Lin E. Chow, P. Quarterman, Shinichiro N. Muramoto, Mythili Surendran, Ranjan K. Patel, Harrison LaBollita, Grace A. Pan, Qi Song, Yang Zhang, Ismail El Baggari, Koushik Jagadish, Yu-Tsun Shao, Berit H. Goodge, Lena F. Kourkoutis, Srimanta Middey, Antia S. Botana, Jayakanth Ravichandran, A. Ariando, Julia Mundy, Alexander Grutter
A key open question in the study of layered superconducting nickelate films is the role that hydrogen incorporation into the lattice plays in the appearance of the superconducting state. Due to the challenges of stabilizing highly crystalline square planar

Integrating Crystallographic and Computational Approaches to Carbon-Capture Materials for the Mitigation of Climate Change

August 27, 2024
Author(s)
Eric J. Cockayne, Austin McDannald, Winnie Wong-Ng, Yu-Sheng Chen, Felipe Gandara Barragan, Jason Benedict, Christopher H. Hendon, David A. Keen, Ute Kolb, Lan Li, Shengqian Ma, William Morris, Aditya Nandy, Tomce Runcevski, Mustapha Soukri, Anuroop Sriram, Janice A. Steckel, John Findley, Chris Wilmer, Taner N. Yildirim, Wei Zhou, Igor Levin, Craig Brown
This article presents an overview of the current state of the art in the structure determination of microporous carbon-capture materials, as discussed at the recent NIST workshop "Integrating Crystallographic and Computational Approaches to Carbon-Capture

Optically-induced quantum transitions in direct-probed mesoscopic 2H-NbSe2 for prototypical bolometers

August 26, 2024
Author(s)
Kishan Jayanand, Gustavo Saenz, Sergiy Krylyuk, Albert Davydov, Goran Karapetrov, Zhonghe Liu, Weidong Zhou, Anupama Kaul
Superconducting transition-edge sensors (TES) have emerged as fascinating devices to detect broadband electromagnetic radiation with low thermal noise. Extensive investigation into novel TES device architectures using conventional elemental or compound
Displaying 101 - 125 of 2320
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