U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 51 - 75 of 2094

Broadband Electromagnetic Properties of Engineered Flexible Absorber Materials

August 23, 2023
Author(s)
Luckshitha Suriyasena Liyanage, Connor Smith, Jacob Pawlik, Sarah Evans, Angela Stelson, Chris Long, Nate Orloff, David Arnold, Jim Booth
Flexible and stretchable materials have attracted significant interest for applications in wearable electronics and bioengineering fields. Recent developments also incorporate embedded microwave circuits, components, and systems with engineered flexible

National Institute of Standards and Technology Environmental Scan 2023: Societal and Technology Landscape to Inform Science and Technology Research

August 23, 2023
Author(s)
Ashley Boggs-Russell, Kerrianne Buchanan, David W. Griffith, Heather Evans, Dimitrios Meritis, Lisa Ng, Anna Sberegaeva, Michelle Stephens
The 2023 National Institute of Standards and Technology Environmental Scan provides an analysis of key external factors that could impact NIST and the fulfillment of its mission in coming years. The analyses were conducted through three separate lenses

Effects of mechanical deformation on dislocation density and phase partitioning in 4130 steel

August 22, 2023
Author(s)
Zack Buck, Matthew Connolly, May Ling Martin, Damian Lauria, Jason Killgore, Peter Bradley, Yan Chen, Ke An, Andrew Slifka
Interrupted tensile tests were performed on an AISI 4130 pressure vessel steel and investigated by neutron diffraction and scanning microscopy techniques. Analysis of the neutron diffraction patterns reveal a partitioning of ferrite and martensite phases

Skyrmion-Excited Spin-Wave Fractal Networks

August 18, 2023
Author(s)
Nan Tang, W. L. N. C. Liyanage, Sergio A. Montoya, Sheena Patel, Lizabeth J. Quigley, Alexander Grutter, Michael R. Fitzsimmons, Sunil Sinha, Julie A. Borchers, Eric E. Fullerton, Lisa Debeer-Schmitt, Dustin A. Gilbert
Magnetic skyrmions exhibit unique, technologically relevant pseudo-particle behaviors which arise from their topological protection, including well-defined, three-dimensional breathing and gyration modes which occur at microwave frequencies. During dynamic

Fabrication of Specimens for Atom Probe Tomography using a Combined Gallium and Neon Focused Ion Beam Milling Approach

August 16, 2023
Author(s)
Frances Allen, Paul Blanchard, David Pappas, Russell Lake, Deying Xia, John Notte, Ruopeng Zhang, Andrew Minor, Norman A. Sanford
We demonstrate a new focused ion beam sample preparation method for atom probe tomography. The key aspect of the new method is that we use a neon ion beam for the final tip shaping after conventional annulus milling using gallium ions. This dual-ion

Measuring the permittivity tensor of anisotropic DyScO3 to 110 GHz

August 14, 2023
Author(s)
Florian Bergmann, Meagan Papac, Nick Jungwirth, Bryan Bosworth, Tomasz Karpisz, Anna Osella, Lucas Enright, Eric Marksz, Angela Stelson, Chris Long, Nate Orloff
DyScO3 (DSO) is an attractive substrate on which to grow epitaxial thin films with extraordinary materials physics. However, its highly anisotropic permittivity makes some measurements exceedingly difficult: For instance, its permittivity tensor has not

pH-Dependent Solution Micellar Structure of Amphoteric Polypeptoid Block Copolymers with Positionally Controlled Ionizable Sites

August 14, 2023
Author(s)
Meng Zhang, Yun Liu, Xiaobing Zuo, Shuo Qian, Sai Pingali, Richard E. Gillilan, Qingqiu Huang, Donghui Zhang
Solution self‐assembly of ionic block copolymers (BCP) with randomly distributed ionization sites along the hydrophilic segments have been extensively studied. By contrast, the roles of positionally controlled ionization sites along the BCP chains in their

AutoEIS: automated Bayesian model selection and analysis for electrochemical impedance spectroscopy

August 9, 2023
Author(s)
Runze Zhang, Robert Black, Debashish Sur, Parisa Karimi, Kangming Li, Brian DeCost, John Scully, Jason Hattrick-Simpers
Electrochemical Impedance Spectroscopy (EIS) is a powerful tool for electrochemical analysis; however, its data can be challenging to interpret. Here, we introduce a new open-source tool named AutoEIS that assists EIS analysis by automatically proposing

14 Examples of How LLMs Can Transform Materials Science and Chemistry: A Reflection on a Large Language Model Hackathon

August 8, 2023
Author(s)
Kevin Maik Jablonka, Alexander Al-Feghali, Shruti Badhwar, Joshua Bocarsly, Stefan Bringuier, Kamal Choudhary, Defne Circi, Samantha Cox, Matthew Evans, Nicolas Gastellu, Jerome Genzling, Maria Victoria Gil, Ankur Gupta, Wibe de Jong, Tao Liu, Sauradeep Majumdar, Garrett Merz, Nicolas Moitessier, Lynda Brinson, Beatriz Mourino, Brenden Pelkie, Mayk Caldas Ramos, Bojana Rankovic, Jacob Sanders, Ben Blaiszik, Andrew White, Ian Foster, Ghezal Ahmad Jan Zia
Chemistry and materials science are complex. Recently, there have been great successes in addressing this complexity using data-driven or computational techniques. Yet, the necessity of input structured in very specific forms and the fact that there is an

Composite Spin Hall Conductivity from Non-Collinear Antiferromagnetic Order

August 3, 2023
Author(s)
Steve Novakov, Peter B. Meisenheimer, Grace A. Pan, Patrick Kezer, Nguyen M. Vu, Alexander Grutter, Ryan F. Need, Julia Mundy, John Heron
Non-collinear antiferromagnets are an exciting new platform for studying intrinsic spin Hall effects, phenomena that arise from the materials' band structure, Berry phase curvature, and linear response to an external electric field. In contrast to

CO Reduction on Single-atom Copper

July 26, 2023
Author(s)
Yuxuan Wang, Hao Shen, Bin Xue, Boyang Li, Nicole Libretto, Han Zong, Wenjun Xie, Ziyuan Li, Guangye Zhou, Jeffrey Vetik, Jeffrey T. Miller, Guofeng Wang, Chao Wang, David Raciti

A quantitative theoretical model of the boson peak based on stringlet excitations

July 24, 2023
Author(s)
Jack F. Douglas, Cunyuan Jiang, Matteo Baggioli
The boson peak (BP), a low-energy excess in the vibrational density of states over the phonon Debye contribution, is usually identified as one of the distinguishing features between ordered crystals and amorphous solid materials. Despite decades of efforts

Enhancement of Optical Absorption by Oxygen Plasma Treatment in Carbon Nanotube-based Black Paint Coating

July 5, 2023
Author(s)
Atasi Dan, Joel Rutkowski, Patrick McArdle, Erica Freire Antunes, Nathan Tomlin, Malcolm White, Michelle Stephens, John H. Lehman
Effect of oxygen (O2) plasma treatment on reflectance properties and surface morphology of CNT-based paint was investigated. We demonstrate a specular reflectance less than 0.10% and hemispherical reflectance less than 2.5% throughout the UV-Vis-NIR range.

Operando photoelectron spectromicroscopy of nanodevices: Correlating the surface chemistry and transport in SnO2 nanowire chemiresistors

June 29, 2023
Author(s)
Andrei Kolmakov, Trey Diulus, Kurt D. Benkstein, Stephen Semancik, Majid Kazemian, Matteo Amati, Maya Kiskinova, Luca Gregoratti
With size reduction of active elements in microelectronics to tens of nanometers and below, the effect of surface and interface properties on overall device performance becomes crucial. High resolution spectroscopic and imaging techniques provide a

Scaling the Projectile Perforation Resistance of Soft Materials

June 29, 2023
Author(s)
Katherine Evans, Shawn Chen, Amanda Souna, Stephan J. Stranick, Christopher Soles, Edwin P. Chan
From space dust to ballistic impact, controlling or mitigating a high velocity projectile impact event is a desirable outcome. The design and development of new and novel impact mitigating materials are greatly hindered by the use of macroscale projectile

Detailed analysis of the synthesis and structure of MAX phase (Mo0.75V0.25)5AlC4 and its MXene (Mo0.75V0.25)5C4

June 27, 2023
Author(s)
Rose Snyder, Mikkel Juelsholt, Curran Kalha, Jason Holm, Elisabeth Mansfield, Tien-Lin Lee, Pardeep Thakur, Aysha Riaz, Benjamin Moss, Anna Regoutz, Christina Birkel
MAX phases with the general formula Mn+1AXn are layered carbides, nitrides and carbonitrides with varying stacking sequence of layers of M6X octahedra and the A-element depending on n. While "211" MAX phases (n = 1) are very common, MAX phases with higher

Sodium Carbazolide and Derivatives as Solid-State Electrolytes for Sodium-Ion Batteries

June 26, 2023
Author(s)
Yang Yu, Jintao Wang, Zhaoxian Qin, Yingtong Lv, Qijun Pei, Khai C. Tan, Tengfei Zhang, Anan Wu, Hui Wu, Andrew S. Lipton, Ping Chen
Replacing widely used organic liquid electrolytes with solid-state electrolytes (SSEs) could effectively solve the safety issues in sodium-ion batteries. Efforts on seeking novel solid-state electrolytes have been continued for decades. However, issues
Displaying 51 - 75 of 2094