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Neutron research

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Displaying 226 - 250 of 925

Neutron Scattering Studies of Materials for Hydrogen Storage

August 28, 2021
Author(s)
Ryan Klein, Hayden Evans, Benjamin Trump, Terrence J. Udovic, Craig Brown
Hydrogen storage presents a significant barrier to the widespread adaptation of hydrogen as an energy source in mobile and stationary applications. The development of new candidate hydrogen storage materials is therefore an outstanding goal in the field of

Highly Basic Clusters in the Herpes Simplex Virus 1 Nuclear Egress Complex Drive Membrane Budding by Inducing Lipid Ordering

August 24, 2021
Author(s)
Michael K. Thorsen, Alex Lai, Michelle W. Lee, David Hoogerheide, Gerard C. Wong, Jack H. Freed, Ekaterina Heldwein
During replication of herpesviruses, capsids escape from the nucleus into the cytoplasm by budding at the inner nuclear membrane. This process is mediated by the viral nuclear egress complex (NEC), but how the NEC interacts with lipids or generates

Enhanced Magnetic Interaction by Face-Shared Hydride Anions in 6H-BaCrO 2 H

August 16, 2021
Author(s)
Kentaro Higashi, Masayuki Ochi, Yusuke Nambu, Takafumi Yamamoto, Taito Murakami, Naoya Yamashina, Cedric Tassel, Yuki Matsumoto, Hiroshi Takatsu, Craig Brown, Hiroshi Kageyama
Studies on magnetic oxyhydrides have been almost limited to perovskite-based lattices with corner-sharing octahedra with a M‒H‒M (M: transition metal) angle of θ 180 °. Using a high-pressure method, we prepared BaCrO 2H with a 6H-type hexagonal perovskite

Relationship between Viscosity and Acyl Tail Dynamics in Lipid Bilayers

August 12, 2021
Author(s)
Michihiro Nagao, Elizabeth Kelley, Antonio Faraone, Makina Saito, Yoshitaka Yoda, Masayuki Kurokuzu, Shinichi Takata, Makoto Seto, Paul Butler
Membrane viscosity is a fundamental property that controls molecular transport and structural rearrangements in lipid membranes. Given its importance in many cell processes, various experimental and computational methods have been developed to measure the

Porous Covalent Organic Polymers for Efficient Fluorocarbon-Based Adsorption Cooling

August 9, 2021
Author(s)
Jian Zheng, Mohammad Wahiduzzman, Dushyant Barpaga, Benjamin Trump, Oliver T. Gutierrez, Praveen Thallapally, Shengqian Ma, B. P. McGrail, Guillaume Maurin, Radha K. Motkuri
We report the first exploration of fluorocarbon adsorption performances using defect-containing covalent–organic frameworks (COFs). Exceptionally high fluorocarbon R134a equilibrium capacities and unique overall linear-shaped isotherms are attributed to

Spin Reorientation in Antiferromagnetic Layered FePt5P

July 30, 2021
Author(s)
Xin Gui, Madalynn Marshall, Ranuri Dissanayaka Mudiyanselage, Ryan Klein, Qiang Chen, Qiang Zhang, William Shelton, Haidong Zhou, Craig Brown, Huibo Cao, Martha Greenblatt, Weiwei Xie
FePt5P, a new substitutional variant of the CeCoIn5 structure type in space group P4/mmm, was synthesized by high-temperature solid-state method and structurally characterized by X-ray diffraction. FePt5P contains layers of FePt12 clusters formed by

Neutron Scattering Investigations of the Global and Local Structures of Ammine Yttrium Borohydrides

July 22, 2021
Author(s)
Jakob Grinderslev, Mikael S. Andersson, Benjamin Trump, Wei Zhou, Terrence J. Udovic, Maths Karlsson, Torben Jensen
Complex metal hydrides are a fascinating and continuously expanding class of materials with many properties relevant for solid-state hydrogen and ammonia storage and solid state electrolytes. The crystal structures are often investigated using powder X-ray

Antiferromagnetic Order and Spin-Canting Transition in the Corrugated Square Net Compound Cu 3 (TeO 4 )(SO 4 ):H 2 O

July 19, 2021
Author(s)
Zhi-Cheng Wang, Kulatheepan Thanabalasingam, Jan P. Scheifers, Alenna Streeter, Gregory T. McCandless, Jonathan N. Gaudet, Craig Brown, Carlo U. Segre, Julia Y. Chan, Fazel Tafti
Strongly correlated electrons in layered perovskite structures have been the birthplace of high-temperature superconductivity, spin liquid, and quantum criticality. Specifically, the cuprate materials with layered structures made of corner sharing square

Polymorphism of Calcium Decahydrido-closo-decaborate and Characterization of Its Hydrates

July 12, 2021
Author(s)
Mathias Jorgensen, Wei Zhou, Hui Wu, Terrence J. Udovic, Mark Paskevicius, Radovan Cerny, Torben R. Jensen
Metal closo-borates and their derivatives have shown promise in several fields of application from cancer therapy to solid-state electrolytes partly owing to their stability in aqueous solutions and high thermal stability. We report the synthesis and

Atomic Dynamics of Metallic Glass Melts La 50 Ni 15 Al 35 and Ce 70 Cu 19 Al 11 Studied by Quasielastic Neutron Scattering

June 23, 2021
Author(s)
Peng Luo, Abhishek Jaiswal, Yanqin Zhai, Zhikun Cai, Nathan P. Walter, Long Zhou, Dawei Ding, Ming Liu, Rebecca Mills, Andrey Podlesnyak, Georg Ehlers, Antonio Faraone, Haiyang Bai, Weihua Wang, Y. Z.
By employing quasi-elastic neutron scattering, we studied the atomic-scale relaxation dynamics and transport mechanism of La 50Ni 15Al 35 and Ce 69Cu 20Al 10Nb 1 Studied by Quasi-Elastic Neutron Scattering metallic glass melts in the temperature range of

Collective Dynamics in Lipid Membranes Containing Transmembrane Peptides

June 21, 2021
Author(s)
Elizabeth Kelley, Paul Butler, Michihiro Nagao
Biological membranes are composed of complex mixtures of lipids and proteins that influence each other's structure and function. The biological activities of many channel-forming peptides and proteins are known to depend on the material properties of the

Copper-binding anticancer peptides from the piscidin family: an expanded mechanism that encompasses physical and chemical bilayer disruption

June 16, 2021
Author(s)
Fatih Comert, Frank N. Heinrich, Ananda Chowdhury, Mason Schoeneck, Caitlin Darling, Kyle Anderson, M. Daben J. Libardo, Alfredo Angeles-Boza, Vitalii I. Silin, Myriam Cotten, Mihaela Mihailescu
In the search for novel broad‑spectrum therapeutics to fight chronic infections, inflammation, and cancer, host defense peptides (HDPs) have garnered increasing interest. Characterizing their biologically‑active conformations and minimum motifs for

Probing Clustering Dynamics between Silicon and PAA or LiPAA Slurries under Processing Conditions

June 3, 2021
Author(s)
Mary Burdette-Trofimov, Beth Armstrong, Ryan Murphy, Luke Heroux, Mathieu Doucet, Alexander Rogers, Gabriel Veith
This work explores the complex interplay between slurry aggregation, agglomeration, and conformation (i.e. shape) of poly(acrylic acid) (PAA) and lithiated poly(acrylic acid) (LiPAA) based silicon slurries as a function of shear rate, and the resulting

Biodegradable Zwitterionic Poly(Carboxybetaine) Microgel for Sustained Delivery of Antibodies with Extended Stability and Preserved Function

June 2, 2021
Author(s)
Amir Erfani, Abanoub Hanna, Payam Zarrintaj, Saeed Manouchehri, Katie Weigandt, Clint P. Aichele, Joshua D. Ramsey
Many recent innovative treatments are based on monoclonal antibodies (mAbs) and other protein therapies. Nevertheless, sustained subcutaneous, oral or pulmonary delivery of such therapeutics are limited by the poor stability, short half-life, and non
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