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 26 - 50 of 1569

A New Inelastic Neutron Spectrometer HODACA

May 28, 2024
Author(s)
Hodaka Kikuchi, Shinichiro Asai, Taku Sato, Taro Nakajima, Leland Harriger, Igor Zaliznyak, Takatsugu Masuda
A new multiplex-type inelastic neutron scattering spectrometer, HOrizontally Defocusing Analyzer Concurrent data Acquisition spectrometer (HODACA), was recently developed and built at the C1-1 cold neutron beam port in JRR-3. The spectrometer is suitable

Assessment of the Retrospective and Prospective Economic Impacts of Investments in U.S. Neutron Research Sources and Facilities from 1960 to 2030

May 1, 2024
Author(s)
Amanda Walsh, Sara Nienow, Jonathan Merker, Emily Decker, Claire Strack, Marwa Salem, Gray Martin, Brooke Shaw
RTI International received funding from the National Institute of Standards and Technology (NIST) to conduct a study on the retrospective and prospective economic impacts of investments in U.S. neutron scattering research facilities from 1960 through 2030

Thermoreversible gels of hollow silica nanorod dispersions

May 1, 2024
Author(s)
Haesoo Lee, KHUSHBOO SUMAN, David Moglia, Ryan Murphy, Norman Wagner
Colloidal suspensions of anisotropic particles are ubiquitous in particle-based industries. Consequently, there is a need to quantify the effects of particle shape on equilibrium phases and kinetic state transitions, particularly at lower aspect ratios (L

Pivotal Roles of Triple Screening-Topological, Electrostatic, and Hydrodynamic-On Dynamics in Semidilute Polyelectrolyte Solutions

March 26, 2024
Author(s)
Rajeev Kumar, Ali Slim, Antonio Faraone, Jan-Michael Carrillo, Ryan Poling-Skutvik, Murugappan Muthukumar, Amanda Marciel, Jacinta Conrad
For semidilute polyelectrolyte solutions, it is generally assumed that topological, electrostatic, and hydrodynamic interactions are screened (called triple screening). Despite a large body of research focused on polyelectrolyte solutions, the concept of

Visualizing 3D Morphologies and Spatial Heterogeneities of Li after Fast- Charging via In-situ Neutron Tomography

March 22, 2024
Author(s)
Maha Yusuf, Anders Kaestner, Markus Wied, Jacob LaManna, Nghia Vo, Alison Dunlop, Andrew Jansen, Bryant Polzin, Stephen Trask, Markus Strobl, Vanessa Wood, Michael Toney, Johanna Weker
Mechanistic understanding of Li plating is imperative to developing fast-charging batteries for sustainable electric vehicles. Here, we report in-situ 3D characterization of the morphology and spatial heterogeneities of Li plating using neutron micro

Swelling of Star Polymer Thin Films Exposed to Supercritical Carbon Dioxide

March 14, 2024
Author(s)
Ayse Caglayan, Sushil Satija, David Uhrig, Kunlun Hong, Tadanori Koga, Bulent Akgun
Impact of polymer chain architecture on the swelling of supported single-layer polymer thin films with thicknesses below 80 nm in the presence of supercritical CO2 (scCO2) is investigated using in-situ neutron reflectivity (NR) and exsitu x-ray

Reorientational Dynamics in Y(BH4)3:xNH3 (x = 0, 3 and 7): The Impact of NH3 on BH4- Dynamics

March 9, 2024
Author(s)
Jakob Grinderslev, Ulrich Haussermann, T. Jensen, Antonio Faraone, Michihiro Nagao, M. Karlsson, Terrence J. Udovic, M. Andersson
The reorientational dynamics of Y(BH4)3·xNH3 (x = 0, 3, and 7) was studied using quasielastic neutron scattering (QENS) and neutron spin echo (NSE). The results showed that changing the number of NH3 ligands drastically alters the reorientational mobility

Designing Nuclear Fuels with a Multi-Principal Element Alloying Approach

March 1, 2024
Author(s)
G. Beausoleil, J. Zillinger, L. Hawkins, T. Yao, Abdullah Weiss, X. Pu, N. Jerred, D. Kaoumi
Previous research has shown that multi-principal element alloys (MPEAs) using chromium, molybdenum, niobium, tantalum, titanium, vanadium, and zirconium can form stable body-centered-cubic (BCC) structures across a large temperature region (25°C to 1000°C)

Dynamic Structure Factor of Undulating Vesicles: Finite-Size and Spherical Geometry Effects with Application to Neutron Spin Echo Experiments

February 14, 2024
Author(s)
Rony Granek, Ingo Hoffmann, Elizabeth Kelley, Michihiro Nagao, Petia Vlahovska, Anton Zilman
We consider the dynamic structure factor (DSF) of quasi-spherical vesicles and present a generalization of an expression that was originally formulated by Zilman and Granek (ZG) for scattering from isotropically oriented quasi-flat membrane plaquettes. The

Small-Pore Hydridic Frameworks Store Densely Packed Hydrogen

February 6, 2024
Author(s)
Hyunchul Oh, Nikolay Tumanov, Voraksmy Ban, Xiao Li, Bo Richter, Matthew Hudson, Craig Brown, Gail Iles, Dirk Wallacher, Scott Jorgensen, Luke Daemen, Rafael Balderas-Xicohtencatl, Yongqiang Cheng, Anibal Ramirez-Cuesta, Michael Heere, Sergio Posada-Perez, Geoffroy Hautier, Michael Hirscher, T. Jensen, Yaroslav Filinchuk
Nanoporous materials have attracted great attention for gas storage, but achieving high volumetric storage capacity remains a challenge. Here, by using neutron powder diffraction, volumetric gas adsorption, inelastic neutron scattering and first-principles

Operando analysis of the positive active mass of lead batteries by neutron diffraction

January 30, 2024
Author(s)
Miguel Rodriuqez-Goemz, Javier Campo, Aloida Orera, Fernando de La Fuente, Jesus Valenciano, Holger Fricke, Yan Chen, Ke An, Daniel Hussey, Angel Larrea
We have analysed, through neutron diffraction experiments with the volume-gauge technique, the in operando performance of lead cells composed of industrial positive and negative electrodes, previously tank formed in the manufacturing plant. The cells, 6.5

Morphological Characterization of Self-Amplifying mRNA Lipid Nanoparticles

January 16, 2024
Author(s)
Jacob Thelen, Wellington Leite, Volker Urban, Hugh O'Neill, Alexander Grieshaev, Joseph E. Curtis, Susan N. Krueger, Maria M. Castellanos
The mRNA technology has emerged as a rapid modality to develop vaccines during pandemic situations with the potential to protect against endemic diseases. The success of mRNA in producing an antigen is dependent on the ability to deliver mRNA to the cells

Antivesiculation and Complete Unbinding of Tail-Tethered Lipids

January 8, 2024
Author(s)
Kuo-Chih Shih, Geoffray Leriche, Chung-Hao Liu, Jibao He, Vijay John, John Barker, Michihiro Nagao, Lin Yang, Jerry Yang, Mu-Ping Nieh
We report the effect of tail-tethering on vesiculation and complete unbinding of bilayered membranes. Amphiphilic molecules of a bolalipid, resembling the tail-tethered molecular structure of archaeal lipids, with two identical zwitterionic

Bulk Elastic Constants And Their Role In Diffractive Stress Analysis

January 1, 2024
Author(s)
Thomas Gnaupel-Herold
The accuracy of stress determination depends to a large extent on the accuracy to which the diffraction elastic constants (DEC) can be obtained. DEC calculations require primarily single crystal elastic constants as input; however, large disparities

Ultrasound programmable hydrogen-bonded organic frameworks for sono-chemogenetics

December 9, 2023
Author(s)
Wenliang Wang, Yanshu Shi, Wenrui Chai, Kai Tang, Ilya Pyatnitskiy, Yi Xie, Xiangping Liu, Weilong He, Jinmo Jeong, Ju-Chun Hsieh, Anakaren Lozano, Brinkley Artman, Xi Shi, Nicole Hoefer, Binita Shrestha, Noah Stern, Wei Zhou, David McComb, Tyrone Porter, Graeme Henkelman, Banglin Chen, Huiliang Wang
The precise control of mechanochemical activation within deep tissues via non-invasive ultrasound holds profound implications for advancing our understanding of fundamental biomedical sciences and revolutionizing disease treatments. However, a theory

Elastic Behavior of Orientation-Correlated Grains in Multiphase Aggregates

December 1, 2023
Author(s)
Thomas Gnaupel-Herold
Diffraction elastic constants (DECs) describe the elastic response of a subset of orientation-correlated grains which share a common lattice vector. DECs reflect the elastic behaviour of the single-crystal constituents through their dependence on grain

Hydrogen-Deuterium Exchange Dynamics of NISTmAb Measured by Small Angle Neutron Scattering

November 14, 2023
Author(s)
Roisin Donnelly, Sai Pingali, Luke Heroux, Robert Brinson, Norman J. Wagner, Yun Liu
Understanding protein dynamics and conformational stability holds great significance in biopharmaceutical research. Hydrogen−deuterium exchange (HDX) is a quantitative methodology used to examine these fundamental properties of proteins. HDX involves
Displaying 26 - 50 of 1569