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Neutron research

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Displaying 1 - 25 of 1588

A Comparison of Bulk with Micro-Volume Elemental Values for NIST SRM 610 and NIST SRM 612

June 26, 2025
Author(s)
Nicholas Sharp, Maria Isabel Vega Martinez, Ruthmara Corzo, Blaza Toman, Rick Paul, Jamie Weaver
NIST SRM 610 and 612 (Trace Elements in Glass) are routinely used for microanalytical measurements but were designed to be bulk-scale reference materials. This study investigates an approach to quantify the differences between values for elements obtained

Solution Conformation Differences between Conventional and CENP-A Nucleosomes are Accentuated by Reversible Deformation under High Pressure

June 12, 2025
Author(s)
Kushol Gupta, Nikolina Sekulic, Praveen Allu, Nicholas Sapp, Qingqiu Huang, Kathryn Sarachan, Mikkel Christensen, Reidar Lund, Susan N. Krueger, Joseph E. Curtis, Richard Gillilan, Gregory Van Duyne, Ben Black
Solution-based interrogation of the physical nature of nucleosomes has its roots in X-ray and neutron scattering experiments, including those that provided the initial observation that DNA wraps around core histones. In this study, we performed a

SEC-SAXS/MC Ensemble Structural Studies of the Microtubule Binding Protein Cdt1 Show Monomeric, Folded-Over Conformations

June 1, 2025
Author(s)
Kyle Smith, Srinivas Chakravarthy, Manas Chakraborty, Kristen M. Vosberg, Marco Tonelli, Maximilian G. Plach, Arabela A. Grigorescu, Joseph E. Curtis, Dileep Varma
Cdt1 is a mixed folded protein critical for DNA replication licensing and it also has a "moonlighting" role at the kinetochore via direct binding to microtubules and the Ndc80 complex. However, it is unknown how the structure and conformations of Cdt1

Sensitivity Study of Operating Conditions and Liquid Water Transport Behavior in an AEMFC Aided by Modeling and Neutron Radiography

June 1, 2025
Author(s)
Mrittunjoy Sarker, Felipe Mojica, Ami Neyerlin, Bryan Pivovar, Daniel Hussey, Jacob LaManna, David Jacobson, Po-Ya Chuang
Two types of anion exchange ionomers, powder and dispersion, are studied in this work. The gas diffusion electrode (GDE) with the dispersion-type ionomer exhibits strong hydrophobicity, thus not enabling sufficient ionic exchange during the potassium

Elongated particles in flow: commentary on small-angle scattering investigations

May 23, 2025
Author(s)
Guan-Rong Huang, Lionel Porcar, Ryan Murphy, Yuya Shinohara, Yangyang Wang, Jan-Michael Carrillo, Bobby G. Sumpter, Chi-Huan Tung, Lijie Ding, Changwoo Do, Wei-Ren Chen
This work thoroughly examines several analytical tools, each possessing a different level of mathematical intricacy, for the purpose of characterizing the orientation distribution function of elongated objects under flow. Our investigation places an

Scattering Insights into Shear-Induced Scission of Rod-like Micelles

May 15, 2025
Author(s)
Guan-Rong Huang, Ryan Murphy, Lionel Porcar, Chi-Huan Tung, Changwoo Do, Wei-Ren Chen
Hypothesis: Understanding the scission of rod-like micelles under mechanical forces is crucial for optimizing their stability and behavior in industrial applications. This study investigates how micelle length, flexibility, and external forces interact

Delicate Tuning of Reaction Thermodynamics via Formation of Bimetal Phenoxide: Synthesis, Structure, and Hydrogen Storage Performance

May 2, 2025
Author(s)
Nor I. Nordin, Khai C. Tan, Hong Wen, Xiaohua Ju, Wei Zhou, Hui Wu, Teng He, Ping Chen, Yong Chua
Arene-cycloalkane pairs are promising for hydrogen storage but often encounter unfavorable thermodynamic and kinetic issues in hydrogenation and dehydrogenation. A recent strategy to circumvent thermodynamic constraints involves introducing electron

Application of neutron grating interferometry and tomography to study ancient Korean copper-based coins

April 28, 2025
Author(s)
Youngju Kim, Michael Daugherty, Caitlyn Wolf, Daniel Hussey, Jacob LaManna, David Jacobson, Paul A. Kienzle, Daeseung Kim, Seung Wook Lee, Minsoo Han, Hahn Choo, Jongyul Kim, Taejoo Kim
Distinguishing differences between authentic artifacts and replicas is a significant challenge in the field of cultural heritage. In this study, we explore the application of neutron grating interferometry and tomography techniques to identify ancient

Reversible CO2 Hydrogenation, Neutron Crystallography, and Hydride Reactivity of a Triiridium Heptahydride Complex

April 1, 2025
Author(s)
Valeriy Cherepakhin, Van K. Do, Anthony J. Chavez, Jacob Kelber, Ryan Klein, Eric Novak, Yongqiang Cheng, Xiaoping Wang, Craig Brown, Travis J. Williams
The authors report the structure, reactivity, and catalytic utility of a triiridium complex, [Ir3H6(μ3-H)(PN)3]2+ (2-H, PN = (2-pyridyl)CH2PBut2). Despite its unusual stability to unsaturated organics, electrophiles, and even CF3SO3D, they find that

Phase Change-Mediated Capture of Carbon Dioxide from Air with a Molecular Triamine Network Solid

March 12, 2025
Author(s)
Adrian J. Huang, Ankur K. Gupta, Henry Z. Jiang, Hao Zhuang, Malia B. Wenny, Ryan Klein, Hyunchul Kwon, Katie R. Meihaus, Hiroyasu Furukawa, Craig Brown, Jeffrey A. Reimer, Wibe A. de Jong, Jeffrey Long
The efficient removal of CO2 from exhaust streams and even directly from air is necessary to forestall climate change, lending urgency to the search for new materials that can rapidly capture CO2 at high capacity. The recent discovery that diamine-appended

Vitamin E Acetate Causes Softening of Pulmonary Surfactant Membrane Models

February 19, 2025
Author(s)
Mitchell DiPasquale, Maksymilian Dziura, Omotayo Gbadamosi, Stuart R. Castillo, Ambreen Fahim, Justin Roberto, Jeffrey Atkinson, Natalie Boccalon, Mario Campana, Sai Pingali, P. C. Chandrasekera, Piotr Zolnierczuk, Michihiro Nagao, Elizabeth Kelley, Drew Marquardt
The popularity of electronic cigarettes and vaping products has launched the outbreak of a condition affecting the respiratory system of users, known as electronic-cigarette/vaping-associated lung injury (EVALI). The build-up of vitamin E acetate (VEA), a

NIST Neutron Source Pre-Conceptual Design

February 10, 2025
Author(s)
David Diamond, Abdullah Weiss, Osman Celikten, Jeremy Cook, Dagistan Sahin, Hubert King, Anil Gurgen, Joy Shen
A pre-conceptual design has been completed for a NIST Neutron Source (NNS). It would replace the existing facility at the NIST Center for Neutron Research (NCNR) to enable significantly more thermal and cold neutrons to be used in many more experiments

H-Bonded Organic Frameworks as Ultrasound-Programmable Delivery Platform

February 5, 2025
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 using non-invasive ultrasound holds profound implications for advancing our understanding of fundamental biomedical sciences and revolutionizing disease treatments1–4. However, a theory

Scattering Insights into Shear-Induced Scission of Rodlike Micelles

January 23, 2025
Author(s)
Guan-Rong Huang, Ryan Murphy, Lionel Porcar, Chi-Huan Tung, Changwoo Do, Wei-Ren Chen
Studying the scission of rodlike micelles under mechanical forces is essential for understanding their stability and behavior in industrial applications. Mechanical stress can fragment these micelles, impacting performance. Investigating this process

Sensitivity of Electronic Structure to Crystal Distortions in Infinite-Layered LaNiO2

January 23, 2025
Author(s)
S. Rathnayaka, S. Yano, J. B. Moree, K. Kawashima, J. Akimitsu, Craig Brown, J. Neuefeind, D. Louca
Recent observations of unconventional superconductivity (SC) in thin films of LaNiO2 (critical temperature Tc  10 K) and in bulk single crystals of La3Ni2O7 under pressure Tc  80K have cemented a long sought-after class of SC nickelates. In La1−xSrxNiO2

a-Synuclein interaction with POPC/POPS vesicles

January 1, 2025
Author(s)
Marija Dubackic, Veronica Lattanzi, Yun Liu, Michael Haertlein, Juliette Devos, Emma Sparr, Sara Linse, Ulf Olsson
We have investigated the interactions between α-Synuclein (aSyn) and small unilamellar vesicles composed of a mixture of zwitterionic POPC and anionic POPS lipids. aSyn monomers spontaneously adsorb onto the anionic lipid vesicles where they adopt an α

Linking Chemical Degradation and Physical Instability of Lipid Vesicles

January 1, 2025
Author(s)
Sharareh Rezaei, Emily Blick, Kenneth Mineart, Elizabeth Kelley
Lipid vesicles are applicable in a wide variety of uses including both academic and commercial avenues. In all of these cases, it is crucial to understand and connect the chemical degradation of constituent molecules – i.e., lipids – with the physical

Development and performance of a low-cost, solid-state, thermal neutron sensor with a 10B converter

December 5, 2024
Author(s)
Priscila Costa, Jamie Weaver, M Raele, Kevin Pritchard, Juscelino Leao, C Domienikan, Nicholas C. Maliszewskyj, F da Silva, W Pereira, Frederico Genezini
This study demonstrates the construction and operation of a portable, solid-state thermal neutron sensor that utilizes a photodiode coated with a thin layer of boron-10 (10B). The boron layer was created using pulsed laser deposition and analyzed through

AutoRefl: Active Learning in Neutron Reflectometry for Fast Data Acquisition

December 1, 2024
Author(s)
David Hoogerheide, Frank N. Heinrich
Neutron reflectometry (NR) is a powerful technique for interrogating the structure of thin films at interfaces. Because NR measurements are slow and instrument availability is limited, measurement efficiency is paramount. One approach to improving
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